/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-array-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 01:03:03,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 01:03:03,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 01:03:03,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 01:03:03,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 01:03:03,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 01:03:03,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 01:03:03,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 01:03:03,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 01:03:03,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 01:03:03,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 01:03:03,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 01:03:03,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 01:03:03,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 01:03:03,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 01:03:03,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 01:03:03,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 01:03:03,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 01:03:03,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 01:03:03,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 01:03:03,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 01:03:03,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 01:03:03,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 01:03:03,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 01:03:03,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-12 01:03:03,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 01:03:03,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 01:03:03,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 01:03:03,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 01:03:03,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 01:03:03,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 01:03:03,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 01:03:03,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 01:03:03,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 01:03:03,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 01:03:03,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 01:03:03,539 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-11-12 01:03:03,593 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 01:03:03,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 01:03:03,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 01:03:03,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 01:03:03,599 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 01:03:03,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 01:03:03,599 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 01:03:03,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 01:03:03,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 01:03:03,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 01:03:03,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 01:03:03,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 01:03:03,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 01:03:03,601 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 01:03:03,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 01:03:03,601 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 01:03:03,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 01:03:03,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 01:03:03,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 01:03:03,603 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 01:03:03,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 01:03:03,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 01:03:03,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 01:03:03,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 01:03:03,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 01:03:03,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 01:03:03,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 01:03:03,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 01:03:03,605 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 01:03:04,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 01:03:04,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 01:03:04,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 01:03:04,079 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 01:03:04,080 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 01:03:04,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-array-1.i [2020-11-12 01:03:04,182 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dcd30f85/4529159fcadb4f848b0fe4e7fdd23dc4/FLAG420a98ab9 [2020-11-12 01:03:04,962 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 01:03:04,963 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-1.i [2020-11-12 01:03:04,979 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dcd30f85/4529159fcadb4f848b0fe4e7fdd23dc4/FLAG420a98ab9 [2020-11-12 01:03:05,216 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dcd30f85/4529159fcadb4f848b0fe4e7fdd23dc4 [2020-11-12 01:03:05,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 01:03:05,226 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 01:03:05,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 01:03:05,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 01:03:05,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 01:03:05,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:03:05" (1/1) ... [2020-11-12 01:03:05,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fa48ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:05, skipping insertion in model container [2020-11-12 01:03:05,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:03:05" (1/1) ... [2020-11-12 01:03:05,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 01:03:05,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 01:03:05,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 01:03:05,759 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 01:03:05,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 01:03:05,963 INFO L208 MainTranslator]: Completed translation [2020-11-12 01:03:05,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:05 WrapperNode [2020-11-12 01:03:05,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 01:03:05,965 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 01:03:05,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 01:03:05,966 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 01:03:05,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:05" (1/1) ... [2020-11-12 01:03:06,008 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:05" (1/1) ... [2020-11-12 01:03:06,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 01:03:06,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 01:03:06,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 01:03:06,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 01:03:06,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:05" (1/1) ... [2020-11-12 01:03:06,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:05" (1/1) ... [2020-11-12 01:03:06,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:05" (1/1) ... [2020-11-12 01:03:06,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:05" (1/1) ... [2020-11-12 01:03:06,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:05" (1/1) ... [2020-11-12 01:03:06,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:05" (1/1) ... [2020-11-12 01:03:06,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:05" (1/1) ... [2020-11-12 01:03:06,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 01:03:06,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 01:03:06,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 01:03:06,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 01:03:06,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 01:03:06,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-11-12 01:03:06,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-12 01:03:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 01:03:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2020-11-12 01:03:06,201 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2020-11-12 01:03:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 01:03:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 01:03:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 01:03:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 01:03:06,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 01:03:06,204 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 01:03:06,845 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 01:03:06,846 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-12 01:03:06,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:03:06 BoogieIcfgContainer [2020-11-12 01:03:06,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 01:03:06,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 01:03:06,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 01:03:06,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 01:03:06,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:03:05" (1/3) ... [2020-11-12 01:03:06,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f9a6862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:03:06, skipping insertion in model container [2020-11-12 01:03:06,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:05" (2/3) ... [2020-11-12 01:03:06,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f9a6862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:03:06, skipping insertion in model container [2020-11-12 01:03:06,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:03:06" (3/3) ... [2020-11-12 01:03:06,861 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-array-1.i [2020-11-12 01:03:06,879 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 01:03:06,880 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 01:03:06,884 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 01:03:06,885 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 01:03:06,925 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:06,925 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:06,926 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:06,926 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:06,926 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:06,926 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:06,927 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:06,927 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:06,927 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:06,927 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:06,928 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:06,928 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:06,928 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:06,929 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:06,931 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:06,931 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:06,932 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:06,932 WARN L313 ript$VariableManager]: TermVariabe thrThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:06,932 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:06,940 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-11-12 01:03:06,953 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-12 01:03:06,977 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 01:03:06,977 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 01:03:06,977 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 01:03:06,978 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 01:03:06,978 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 01:03:06,978 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 01:03:06,978 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 01:03:06,978 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 01:03:06,991 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-12 01:03:06,993 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 80 transitions, 168 flow [2020-11-12 01:03:06,996 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 80 transitions, 168 flow [2020-11-12 01:03:06,999 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 75 places, 80 transitions, 168 flow [2020-11-12 01:03:07,055 INFO L129 PetriNetUnfolder]: 14/117 cut-off events. [2020-11-12 01:03:07,055 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-11-12 01:03:07,059 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 117 events. 14/117 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 258 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 64. Up to 4 conditions per place. [2020-11-12 01:03:07,061 INFO L116 LiptonReduction]: Number of co-enabled transitions 420 [2020-11-12 01:03:10,632 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-11-12 01:03:10,891 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-11-12 01:03:11,344 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-11-12 01:03:11,490 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-11-12 01:03:11,839 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-11-12 01:03:11,977 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-11-12 01:03:12,256 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-12 01:03:12,630 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-12 01:03:12,824 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-12 01:03:13,178 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2020-11-12 01:03:13,189 INFO L131 LiptonReduction]: Checked pairs total: 484 [2020-11-12 01:03:13,189 INFO L133 LiptonReduction]: Total number of compositions: 83 [2020-11-12 01:03:13,197 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 14 transitions, 36 flow [2020-11-12 01:03:13,206 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 27 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 26 states have internal predecessors, (38), 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) [2020-11-12 01:03:13,208 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 26 states have internal predecessors, (38), 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) [2020-11-12 01:03:13,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-12 01:03:13,214 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 01:03:13,214 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-12 01:03:13,215 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 01:03:13,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 01:03:13,221 INFO L82 PathProgramCache]: Analyzing trace with hash 9775854, now seen corresponding path program 1 times [2020-11-12 01:03:13,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 01:03:13,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459410432] [2020-11-12 01:03:13,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 01:03:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 01:03:13,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 01:03:13,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459410432] [2020-11-12 01:03:13,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 01:03:13,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 01:03:13,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966435115] [2020-11-12 01:03:13,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 01:03:13,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 01:03:13,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 01:03:13,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 01:03:13,444 INFO L87 Difference]: Start difference. First operand has 27 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 26 states have internal predecessors, (38), 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 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2020-11-12 01:03:13,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 01:03:13,502 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-11-12 01:03:13,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 01:03:13,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2020-11-12 01:03:13,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 01:03:13,513 INFO L225 Difference]: With dead ends: 27 [2020-11-12 01:03:13,514 INFO L226 Difference]: Without dead ends: 23 [2020-11-12 01:03:13,515 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 01:03:13,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-12 01:03:13,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-12 01:03:13,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.6) internal successors, (32), 22 states have internal predecessors, (32), 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) [2020-11-12 01:03:13,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 32 transitions. [2020-11-12 01:03:13,552 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 32 transitions. Word has length 4 [2020-11-12 01:03:13,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 01:03:13,553 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 32 transitions. [2020-11-12 01:03:13,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2020-11-12 01:03:13,554 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2020-11-12 01:03:13,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-12 01:03:13,555 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 01:03:13,555 INFO L494 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-11-12 01:03:13,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 01:03:13,555 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 01:03:13,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 01:03:13,563 INFO L82 PathProgramCache]: Analyzing trace with hash 798508706, now seen corresponding path program 1 times [2020-11-12 01:03:13,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 01:03:13,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061104819] [2020-11-12 01:03:13,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 01:03:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-12 01:03:13,609 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-12 01:03:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-12 01:03:13,644 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-12 01:03:13,688 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-12 01:03:13,689 INFO L595 BasicCegarLoop]: Counterexample might be feasible [2020-11-12 01:03:13,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 01:03:13,694 WARN L386 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-11-12 01:03:13,695 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-11-12 01:03:13,710 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,710 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,710 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,711 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,711 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,712 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,712 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,712 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,713 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,713 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,713 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,714 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,714 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,714 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,714 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,715 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,716 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,716 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,716 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,716 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,716 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,717 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,717 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,717 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,718 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,718 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,718 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,718 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,719 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,719 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,720 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,720 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,720 WARN L313 ript$VariableManager]: TermVariabe thrThread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,727 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,728 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,728 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,728 WARN L313 ript$VariableManager]: TermVariabe thrThread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,728 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:13,736 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2020-11-12 01:03:13,736 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-12 01:03:13,739 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 01:03:13,740 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 01:03:13,740 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 01:03:13,740 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 01:03:13,740 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 01:03:13,740 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 01:03:13,740 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 01:03:13,740 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 01:03:13,745 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-12 01:03:13,746 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 87 transitions, 192 flow [2020-11-12 01:03:13,746 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 87 transitions, 192 flow [2020-11-12 01:03:13,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 87 transitions, 192 flow [2020-11-12 01:03:13,822 INFO L129 PetriNetUnfolder]: 27/207 cut-off events. [2020-11-12 01:03:13,823 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-11-12 01:03:13,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 207 events. 27/207 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 559 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 119. Up to 8 conditions per place. [2020-11-12 01:03:13,833 INFO L116 LiptonReduction]: Number of co-enabled transitions 1000 [2020-11-12 01:03:16,565 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-11-12 01:03:16,738 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-11-12 01:03:16,963 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-11-12 01:03:17,152 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-11-12 01:03:17,547 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-11-12 01:03:17,686 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-11-12 01:03:18,035 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-11-12 01:03:18,190 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-11-12 01:03:18,426 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-11-12 01:03:18,543 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-11-12 01:03:18,784 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-11-12 01:03:18,904 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-11-12 01:03:19,126 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-12 01:03:19,270 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-12 01:03:19,413 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-12 01:03:19,549 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-12 01:03:19,583 INFO L131 LiptonReduction]: Checked pairs total: 2849 [2020-11-12 01:03:19,584 INFO L133 LiptonReduction]: Total number of compositions: 86 [2020-11-12 01:03:19,584 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 25 places, 23 transitions, 64 flow [2020-11-12 01:03:19,598 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 242 states, 232 states have (on average 2.375) internal successors, (551), 241 states have internal predecessors, (551), 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) [2020-11-12 01:03:19,600 INFO L276 IsEmpty]: Start isEmpty. Operand has 242 states, 232 states have (on average 2.375) internal successors, (551), 241 states have internal predecessors, (551), 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) [2020-11-12 01:03:19,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-12 01:03:19,600 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 01:03:19,600 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-12 01:03:19,601 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 01:03:19,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 01:03:19,601 INFO L82 PathProgramCache]: Analyzing trace with hash 15344399, now seen corresponding path program 1 times [2020-11-12 01:03:19,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 01:03:19,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082093857] [2020-11-12 01:03:19,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 01:03:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 01:03:19,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 01:03:19,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082093857] [2020-11-12 01:03:19,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 01:03:19,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 01:03:19,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483785292] [2020-11-12 01:03:19,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 01:03:19,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 01:03:19,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 01:03:19,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 01:03:19,659 INFO L87 Difference]: Start difference. First operand has 242 states, 232 states have (on average 2.375) internal successors, (551), 241 states have internal predecessors, (551), 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 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2020-11-12 01:03:19,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 01:03:19,697 INFO L93 Difference]: Finished difference Result 242 states and 550 transitions. [2020-11-12 01:03:19,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 01:03:19,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2020-11-12 01:03:19,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 01:03:19,704 INFO L225 Difference]: With dead ends: 242 [2020-11-12 01:03:19,704 INFO L226 Difference]: Without dead ends: 216 [2020-11-12 01:03:19,705 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 01:03:19,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-11-12 01:03:19,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-11-12 01:03:19,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 211 states have (on average 2.3412322274881516) internal successors, (494), 215 states have internal predecessors, (494), 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) [2020-11-12 01:03:19,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 494 transitions. [2020-11-12 01:03:19,762 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 494 transitions. Word has length 4 [2020-11-12 01:03:19,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 01:03:19,762 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 494 transitions. [2020-11-12 01:03:19,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2020-11-12 01:03:19,763 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 494 transitions. [2020-11-12 01:03:19,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-12 01:03:19,764 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 01:03:19,764 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 01:03:19,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 01:03:19,764 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 01:03:19,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 01:03:19,765 INFO L82 PathProgramCache]: Analyzing trace with hash 185836140, now seen corresponding path program 1 times [2020-11-12 01:03:19,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 01:03:19,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943461172] [2020-11-12 01:03:19,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 01:03:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 01:03:19,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-12 01:03:19,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943461172] [2020-11-12 01:03:19,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 01:03:19,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 01:03:19,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017123306] [2020-11-12 01:03:19,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 01:03:19,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 01:03:19,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 01:03:19,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-12 01:03:19,862 INFO L87 Difference]: Start difference. First operand 216 states and 494 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2020-11-12 01:03:19,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 01:03:19,901 INFO L93 Difference]: Finished difference Result 203 states and 426 transitions. [2020-11-12 01:03:19,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-12 01:03:19,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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 [2020-11-12 01:03:19,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 01:03:19,904 INFO L225 Difference]: With dead ends: 203 [2020-11-12 01:03:19,904 INFO L226 Difference]: Without dead ends: 203 [2020-11-12 01:03:19,905 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-12 01:03:19,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-11-12 01:03:19,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2020-11-12 01:03:19,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 193 states have (on average 2.1761658031088085) internal successors, (420), 196 states have internal predecessors, (420), 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) [2020-11-12 01:03:19,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 420 transitions. [2020-11-12 01:03:19,924 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 420 transitions. Word has length 8 [2020-11-12 01:03:19,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 01:03:19,925 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 420 transitions. [2020-11-12 01:03:19,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2020-11-12 01:03:19,925 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 420 transitions. [2020-11-12 01:03:19,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-12 01:03:19,926 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 01:03:19,926 INFO L494 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2020-11-12 01:03:19,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 01:03:19,927 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 01:03:19,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 01:03:19,927 INFO L82 PathProgramCache]: Analyzing trace with hash -295916516, now seen corresponding path program 1 times [2020-11-12 01:03:19,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 01:03:19,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525756692] [2020-11-12 01:03:19,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 01:03:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-12 01:03:19,953 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-12 01:03:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-12 01:03:19,989 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-12 01:03:20,001 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-12 01:03:20,001 INFO L595 BasicCegarLoop]: Counterexample might be feasible [2020-11-12 01:03:20,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 01:03:20,002 WARN L386 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-11-12 01:03:20,003 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-11-12 01:03:20,013 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,014 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,014 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,014 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,014 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,014 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,014 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,015 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,015 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,015 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,015 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,015 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,015 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,016 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,016 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,016 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,016 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,016 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,016 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,016 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,017 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,017 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,017 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,017 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,018 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,018 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,018 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,018 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,018 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,019 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,019 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,019 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,019 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,019 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,020 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,020 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,020 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,020 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,020 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,020 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,020 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,021 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,021 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,021 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,021 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,022 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,022 WARN L313 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,023 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,023 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,023 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,023 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,023 WARN L313 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,024 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,024 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,025 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,025 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,025 WARN L313 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:20,028 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2020-11-12 01:03:20,028 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-12 01:03:20,029 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 01:03:20,030 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 01:03:20,030 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 01:03:20,030 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 01:03:20,030 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 01:03:20,030 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 01:03:20,030 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 01:03:20,031 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 01:03:20,033 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-12 01:03:20,033 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 94 transitions, 218 flow [2020-11-12 01:03:20,034 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 94 transitions, 218 flow [2020-11-12 01:03:20,034 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 94 transitions, 218 flow [2020-11-12 01:03:20,098 INFO L129 PetriNetUnfolder]: 53/374 cut-off events. [2020-11-12 01:03:20,098 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2020-11-12 01:03:20,099 INFO L84 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 374 events. 53/374 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1354 event pairs, 1 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 215. Up to 16 conditions per place. [2020-11-12 01:03:20,105 INFO L116 LiptonReduction]: Number of co-enabled transitions 1620 [2020-11-12 01:03:23,230 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2020-11-12 01:03:23,478 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2020-11-12 01:03:23,893 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2020-11-12 01:03:24,157 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-12 01:03:24,502 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2020-11-12 01:03:24,789 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2020-11-12 01:03:24,796 INFO L131 LiptonReduction]: Checked pairs total: 4962 [2020-11-12 01:03:24,796 INFO L133 LiptonReduction]: Total number of compositions: 81 [2020-11-12 01:03:24,796 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 28 transitions, 86 flow [2020-11-12 01:03:24,857 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1150 states, 1132 states have (on average 2.9690812720848054) internal successors, (3361), 1149 states have internal predecessors, (3361), 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) [2020-11-12 01:03:24,861 INFO L276 IsEmpty]: Start isEmpty. Operand has 1150 states, 1132 states have (on average 2.9690812720848054) internal successors, (3361), 1149 states have internal predecessors, (3361), 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) [2020-11-12 01:03:24,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-12 01:03:24,869 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 01:03:24,869 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-12 01:03:24,869 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 01:03:24,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 01:03:24,870 INFO L82 PathProgramCache]: Analyzing trace with hash 20956081, now seen corresponding path program 1 times [2020-11-12 01:03:24,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 01:03:24,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854846673] [2020-11-12 01:03:24,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 01:03:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 01:03:24,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 01:03:24,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854846673] [2020-11-12 01:03:24,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 01:03:24,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 01:03:24,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039145255] [2020-11-12 01:03:24,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 01:03:24,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 01:03:24,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 01:03:24,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 01:03:24,915 INFO L87 Difference]: Start difference. First operand has 1150 states, 1132 states have (on average 2.9690812720848054) internal successors, (3361), 1149 states have internal predecessors, (3361), 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 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2020-11-12 01:03:24,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 01:03:24,972 INFO L93 Difference]: Finished difference Result 1150 states and 3360 transitions. [2020-11-12 01:03:24,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 01:03:24,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2020-11-12 01:03:24,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 01:03:24,991 INFO L225 Difference]: With dead ends: 1150 [2020-11-12 01:03:24,991 INFO L226 Difference]: Without dead ends: 1024 [2020-11-12 01:03:24,991 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 01:03:25,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2020-11-12 01:03:25,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1024. [2020-11-12 01:03:25,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 1015 states have (on average 2.9645320197044334) internal successors, (3009), 1023 states have internal predecessors, (3009), 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) [2020-11-12 01:03:25,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 3009 transitions. [2020-11-12 01:03:25,083 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 3009 transitions. Word has length 4 [2020-11-12 01:03:25,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 01:03:25,083 INFO L481 AbstractCegarLoop]: Abstraction has 1024 states and 3009 transitions. [2020-11-12 01:03:25,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2020-11-12 01:03:25,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 3009 transitions. [2020-11-12 01:03:25,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-12 01:03:25,084 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 01:03:25,084 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 01:03:25,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 01:03:25,084 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 01:03:25,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 01:03:25,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1704495333, now seen corresponding path program 1 times [2020-11-12 01:03:25,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 01:03:25,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537140140] [2020-11-12 01:03:25,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 01:03:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 01:03:25,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-12 01:03:25,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537140140] [2020-11-12 01:03:25,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 01:03:25,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 01:03:25,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891196871] [2020-11-12 01:03:25,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 01:03:25,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 01:03:25,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 01:03:25,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-12 01:03:25,170 INFO L87 Difference]: Start difference. First operand 1024 states and 3009 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2020-11-12 01:03:25,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 01:03:25,212 INFO L93 Difference]: Finished difference Result 1015 states and 2784 transitions. [2020-11-12 01:03:25,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-12 01:03:25,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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 [2020-11-12 01:03:25,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 01:03:25,220 INFO L225 Difference]: With dead ends: 1015 [2020-11-12 01:03:25,220 INFO L226 Difference]: Without dead ends: 1015 [2020-11-12 01:03:25,221 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-12 01:03:25,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-11-12 01:03:25,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 977. [2020-11-12 01:03:25,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 969 states have (on average 2.804953560371517) internal successors, (2718), 976 states have internal predecessors, (2718), 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) [2020-11-12 01:03:25,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 2718 transitions. [2020-11-12 01:03:25,258 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 2718 transitions. Word has length 8 [2020-11-12 01:03:25,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 01:03:25,258 INFO L481 AbstractCegarLoop]: Abstraction has 977 states and 2718 transitions. [2020-11-12 01:03:25,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2020-11-12 01:03:25,259 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 2718 transitions. [2020-11-12 01:03:25,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-12 01:03:25,261 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 01:03:25,261 INFO L494 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2020-11-12 01:03:25,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 01:03:25,262 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 01:03:25,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 01:03:25,262 INFO L82 PathProgramCache]: Analyzing trace with hash 952582543, now seen corresponding path program 1 times [2020-11-12 01:03:25,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 01:03:25,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846065874] [2020-11-12 01:03:25,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 01:03:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-12 01:03:25,286 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-12 01:03:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-12 01:03:25,315 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-12 01:03:25,331 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-12 01:03:25,331 INFO L595 BasicCegarLoop]: Counterexample might be feasible [2020-11-12 01:03:25,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-12 01:03:25,332 WARN L386 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-11-12 01:03:25,333 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-11-12 01:03:25,343 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,343 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,343 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,343 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,343 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,343 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,344 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,344 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,344 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,344 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,344 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,344 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,344 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,345 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,345 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,345 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,345 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,345 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,345 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,345 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,345 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,346 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,346 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,346 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,346 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,346 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,346 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,346 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,347 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,347 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,347 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,347 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,347 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,347 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,349 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,349 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,349 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,349 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,350 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,350 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,350 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,350 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,350 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,350 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,350 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,351 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,351 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,351 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,351 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,351 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,351 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,351 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,351 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,352 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,352 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,352 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,355 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,355 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,356 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,356 WARN L313 ript$VariableManager]: TermVariabe thrThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,356 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,363 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,364 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,364 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,364 WARN L313 ript$VariableManager]: TermVariabe thrThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,364 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,366 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,366 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,366 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,366 WARN L313 ript$VariableManager]: TermVariabe thrThread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,366 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,368 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,368 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,368 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,368 WARN L313 ript$VariableManager]: TermVariabe thrThread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,368 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:25,372 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-11-12 01:03:25,372 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-12 01:03:25,373 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 01:03:25,373 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 01:03:25,373 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 01:03:25,373 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 01:03:25,374 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 01:03:25,374 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 01:03:25,374 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 01:03:25,374 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 01:03:25,375 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-12 01:03:25,376 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 101 transitions, 246 flow [2020-11-12 01:03:25,376 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 101 transitions, 246 flow [2020-11-12 01:03:25,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 101 transitions, 246 flow [2020-11-12 01:03:25,478 INFO L129 PetriNetUnfolder]: 107/697 cut-off events. [2020-11-12 01:03:25,478 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2020-11-12 01:03:25,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 697 events. 107/697 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3238 event pairs, 6 based on Foata normal form. 0/574 useless extension candidates. Maximal degree in co-relation 394. Up to 32 conditions per place. [2020-11-12 01:03:25,493 INFO L116 LiptonReduction]: Number of co-enabled transitions 2320 [2020-11-12 01:03:28,123 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-11-12 01:03:28,324 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-11-12 01:03:29,410 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2020-11-12 01:03:29,573 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-12 01:03:29,903 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2020-11-12 01:03:30,040 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-12 01:03:30,051 INFO L131 LiptonReduction]: Checked pairs total: 7598 [2020-11-12 01:03:30,051 INFO L133 LiptonReduction]: Total number of compositions: 85 [2020-11-12 01:03:30,051 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 37 places, 33 transitions, 110 flow [2020-11-12 01:03:30,453 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5482 states, 5448 states have (on average 3.5893906020558) internal successors, (19555), 5481 states have internal predecessors, (19555), 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) [2020-11-12 01:03:30,486 INFO L276 IsEmpty]: Start isEmpty. Operand has 5482 states, 5448 states have (on average 3.5893906020558) internal successors, (19555), 5481 states have internal predecessors, (19555), 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) [2020-11-12 01:03:30,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-12 01:03:30,487 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 01:03:30,487 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-12 01:03:30,487 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 01:03:30,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 01:03:30,488 INFO L82 PathProgramCache]: Analyzing trace with hash 26864784, now seen corresponding path program 1 times [2020-11-12 01:03:30,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 01:03:30,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594560352] [2020-11-12 01:03:30,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 01:03:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 01:03:30,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 01:03:30,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594560352] [2020-11-12 01:03:30,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 01:03:30,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 01:03:30,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251891131] [2020-11-12 01:03:30,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 01:03:30,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 01:03:30,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 01:03:30,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 01:03:30,557 INFO L87 Difference]: Start difference. First operand has 5482 states, 5448 states have (on average 3.5893906020558) internal successors, (19555), 5481 states have internal predecessors, (19555), 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 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2020-11-12 01:03:30,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 01:03:30,656 INFO L93 Difference]: Finished difference Result 5482 states and 19554 transitions. [2020-11-12 01:03:30,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 01:03:30,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2020-11-12 01:03:30,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 01:03:30,705 INFO L225 Difference]: With dead ends: 5482 [2020-11-12 01:03:30,705 INFO L226 Difference]: Without dead ends: 4856 [2020-11-12 01:03:30,707 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 01:03:30,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2020-11-12 01:03:30,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4856. [2020-11-12 01:03:30,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4856 states, 4839 states have (on average 3.601570572432321) internal successors, (17428), 4855 states have internal predecessors, (17428), 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) [2020-11-12 01:03:30,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4856 states to 4856 states and 17428 transitions. [2020-11-12 01:03:30,944 INFO L78 Accepts]: Start accepts. Automaton has 4856 states and 17428 transitions. Word has length 4 [2020-11-12 01:03:30,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 01:03:30,945 INFO L481 AbstractCegarLoop]: Abstraction has 4856 states and 17428 transitions. [2020-11-12 01:03:30,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2020-11-12 01:03:30,945 INFO L276 IsEmpty]: Start isEmpty. Operand 4856 states and 17428 transitions. [2020-11-12 01:03:30,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-12 01:03:30,948 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 01:03:30,948 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 01:03:30,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-12 01:03:30,948 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 01:03:30,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 01:03:30,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1052839006, now seen corresponding path program 1 times [2020-11-12 01:03:30,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 01:03:30,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744539714] [2020-11-12 01:03:30,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 01:03:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 01:03:31,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-12 01:03:31,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744539714] [2020-11-12 01:03:31,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 01:03:31,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 01:03:31,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708500869] [2020-11-12 01:03:31,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 01:03:31,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 01:03:31,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 01:03:31,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-12 01:03:31,008 INFO L87 Difference]: Start difference. First operand 4856 states and 17428 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2020-11-12 01:03:31,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 01:03:31,099 INFO L93 Difference]: Finished difference Result 4995 states and 16978 transitions. [2020-11-12 01:03:31,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-12 01:03:31,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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 [2020-11-12 01:03:31,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 01:03:31,144 INFO L225 Difference]: With dead ends: 4995 [2020-11-12 01:03:31,144 INFO L226 Difference]: Without dead ends: 4995 [2020-11-12 01:03:31,145 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-12 01:03:31,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4995 states. [2020-11-12 01:03:31,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4995 to 4797. [2020-11-12 01:03:31,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4797 states, 4781 states have (on average 3.4469776197448234) internal successors, (16480), 4796 states have internal predecessors, (16480), 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) [2020-11-12 01:03:31,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4797 states to 4797 states and 16480 transitions. [2020-11-12 01:03:31,367 INFO L78 Accepts]: Start accepts. Automaton has 4797 states and 16480 transitions. Word has length 8 [2020-11-12 01:03:31,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 01:03:31,368 INFO L481 AbstractCegarLoop]: Abstraction has 4797 states and 16480 transitions. [2020-11-12 01:03:31,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2020-11-12 01:03:31,368 INFO L276 IsEmpty]: Start isEmpty. Operand 4797 states and 16480 transitions. [2020-11-12 01:03:31,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-12 01:03:31,369 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 01:03:31,370 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 01:03:31,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-12 01:03:31,370 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 01:03:31,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 01:03:31,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1281665994, now seen corresponding path program 1 times [2020-11-12 01:03:31,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 01:03:31,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904751322] [2020-11-12 01:03:31,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 01:03:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 01:03:31,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-12 01:03:31,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904751322] [2020-11-12 01:03:31,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345703891] [2020-11-12 01:03:31,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 01:03:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 01:03:31,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-12 01:03:31,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 01:03:31,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-12 01:03:31,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 01:03:31,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2020-11-12 01:03:31,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121022292] [2020-11-12 01:03:31,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 01:03:31,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 01:03:31,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 01:03:31,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-11-12 01:03:31,656 INFO L87 Difference]: Start difference. First operand 4797 states and 16480 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 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) [2020-11-12 01:03:32,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 01:03:32,007 INFO L93 Difference]: Finished difference Result 4468 states and 14760 transitions. [2020-11-12 01:03:32,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 01:03:32,008 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 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 16 [2020-11-12 01:03:32,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 01:03:32,057 INFO L225 Difference]: With dead ends: 4468 [2020-11-12 01:03:32,057 INFO L226 Difference]: Without dead ends: 4468 [2020-11-12 01:03:32,057 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-11-12 01:03:32,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4468 states. [2020-11-12 01:03:32,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4468 to 4386. [2020-11-12 01:03:32,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4386 states, 4374 states have (on average 3.3406492912665753) internal successors, (14612), 4385 states have internal predecessors, (14612), 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) [2020-11-12 01:03:32,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4386 states to 4386 states and 14612 transitions. [2020-11-12 01:03:32,243 INFO L78 Accepts]: Start accepts. Automaton has 4386 states and 14612 transitions. Word has length 16 [2020-11-12 01:03:32,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 01:03:32,244 INFO L481 AbstractCegarLoop]: Abstraction has 4386 states and 14612 transitions. [2020-11-12 01:03:32,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 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) [2020-11-12 01:03:32,244 INFO L276 IsEmpty]: Start isEmpty. Operand 4386 states and 14612 transitions. [2020-11-12 01:03:32,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-12 01:03:32,247 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 01:03:32,247 INFO L494 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2020-11-12 01:03:32,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-12 01:03:32,460 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 01:03:32,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 01:03:32,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1145933611, now seen corresponding path program 1 times [2020-11-12 01:03:32,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 01:03:32,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877984574] [2020-11-12 01:03:32,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 01:03:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-12 01:03:32,485 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-12 01:03:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-12 01:03:32,503 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-12 01:03:32,525 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-12 01:03:32,525 INFO L595 BasicCegarLoop]: Counterexample might be feasible [2020-11-12 01:03:32,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-12 01:03:32,525 WARN L386 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-11-12 01:03:32,526 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-11-12 01:03:32,542 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,542 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,543 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,543 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,543 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,543 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,543 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,543 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,543 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,543 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,543 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,544 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,544 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,544 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,544 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,545 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,545 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,545 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,545 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,545 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,545 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,545 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,545 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,545 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,546 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,546 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,546 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,546 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,546 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,546 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,547 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,547 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,547 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,547 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,547 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,547 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,547 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,548 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,548 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,548 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,548 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,548 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,549 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,549 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,549 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,549 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,549 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,549 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,550 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,550 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,550 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,550 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,550 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,550 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,550 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,551 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,551 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,551 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,551 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,551 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,551 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,551 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,551 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,552 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,552 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,552 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,552 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,552 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,552 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,552 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,553 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,553 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,553 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,553 WARN L313 ript$VariableManager]: TermVariabe thrThread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,553 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,554 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,555 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,555 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,555 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,555 WARN L313 ript$VariableManager]: TermVariabe thrThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,556 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,556 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,556 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,557 WARN L313 ript$VariableManager]: TermVariabe thrThread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,557 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,558 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,558 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,558 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,558 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,558 WARN L313 ript$VariableManager]: TermVariabe thrThread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,560 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,561 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,561 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,561 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,561 WARN L313 ript$VariableManager]: TermVariabe thrThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:32,567 INFO L149 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2020-11-12 01:03:32,567 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-12 01:03:32,568 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 01:03:32,568 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 01:03:32,568 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 01:03:32,568 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 01:03:32,568 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 01:03:32,568 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 01:03:32,568 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 01:03:32,568 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 01:03:32,572 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-12 01:03:32,574 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 108 transitions, 276 flow [2020-11-12 01:03:32,574 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 108 transitions, 276 flow [2020-11-12 01:03:32,575 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 107 places, 108 transitions, 276 flow [2020-11-12 01:03:32,777 INFO L129 PetriNetUnfolder]: 221/1336 cut-off events. [2020-11-12 01:03:32,777 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2020-11-12 01:03:32,783 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1447 conditions, 1336 events. 221/1336 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7813 event pairs, 23 based on Foata normal form. 0/1099 useless extension candidates. Maximal degree in co-relation 742. Up to 80 conditions per place. [2020-11-12 01:03:32,814 INFO L116 LiptonReduction]: Number of co-enabled transitions 3100 [2020-11-12 01:03:35,191 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-11-12 01:03:35,621 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-11-12 01:03:35,810 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-11-12 01:03:36,688 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2020-11-12 01:03:37,234 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2020-11-12 01:03:37,381 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-12 01:03:37,764 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2020-11-12 01:03:37,910 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-12 01:03:37,923 INFO L131 LiptonReduction]: Checked pairs total: 11860 [2020-11-12 01:03:37,924 INFO L133 LiptonReduction]: Total number of compositions: 87 [2020-11-12 01:03:37,924 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 38 transitions, 136 flow [2020-11-12 01:03:40,116 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 26310 states, 26244 states have (on average 4.217230605090688) internal successors, (110677), 26309 states have internal predecessors, (110677), 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) [2020-11-12 01:03:40,231 INFO L276 IsEmpty]: Start isEmpty. Operand has 26310 states, 26244 states have (on average 4.217230605090688) internal successors, (110677), 26309 states have internal predecessors, (110677), 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) [2020-11-12 01:03:40,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-12 01:03:40,231 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 01:03:40,231 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-12 01:03:40,232 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 01:03:40,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 01:03:40,232 INFO L82 PathProgramCache]: Analyzing trace with hash 33081975, now seen corresponding path program 1 times [2020-11-12 01:03:40,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 01:03:40,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28391545] [2020-11-12 01:03:40,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 01:03:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 01:03:40,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 01:03:40,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28391545] [2020-11-12 01:03:40,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 01:03:40,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 01:03:40,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250184182] [2020-11-12 01:03:40,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 01:03:40,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 01:03:40,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 01:03:40,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 01:03:40,325 INFO L87 Difference]: Start difference. First operand has 26310 states, 26244 states have (on average 4.217230605090688) internal successors, (110677), 26309 states have internal predecessors, (110677), 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 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2020-11-12 01:03:40,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 01:03:40,916 INFO L93 Difference]: Finished difference Result 26310 states and 110676 transitions. [2020-11-12 01:03:40,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 01:03:40,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2020-11-12 01:03:40,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 01:03:41,168 INFO L225 Difference]: With dead ends: 26310 [2020-11-12 01:03:41,168 INFO L226 Difference]: Without dead ends: 23184 [2020-11-12 01:03:41,169 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 01:03:41,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23184 states. [2020-11-12 01:03:42,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23184 to 23184. [2020-11-12 01:03:42,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23184 states, 23151 states have (on average 4.240637553453414) internal successors, (98175), 23183 states have internal predecessors, (98175), 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) [2020-11-12 01:03:42,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23184 states to 23184 states and 98175 transitions. [2020-11-12 01:03:42,842 INFO L78 Accepts]: Start accepts. Automaton has 23184 states and 98175 transitions. Word has length 4 [2020-11-12 01:03:42,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 01:03:42,842 INFO L481 AbstractCegarLoop]: Abstraction has 23184 states and 98175 transitions. [2020-11-12 01:03:42,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2020-11-12 01:03:42,842 INFO L276 IsEmpty]: Start isEmpty. Operand 23184 states and 98175 transitions. [2020-11-12 01:03:42,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-12 01:03:42,843 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 01:03:42,843 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 01:03:42,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-12 01:03:42,843 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 01:03:42,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 01:03:42,844 INFO L82 PathProgramCache]: Analyzing trace with hash -921920104, now seen corresponding path program 1 times [2020-11-12 01:03:42,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 01:03:42,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690772285] [2020-11-12 01:03:42,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 01:03:42,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 01:03:42,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-12 01:03:42,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690772285] [2020-11-12 01:03:42,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 01:03:42,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 01:03:42,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771509412] [2020-11-12 01:03:42,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 01:03:42,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 01:03:42,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 01:03:42,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-12 01:03:42,878 INFO L87 Difference]: Start difference. First operand 23184 states and 98175 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2020-11-12 01:03:43,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 01:03:43,326 INFO L93 Difference]: Finished difference Result 24543 states and 99524 transitions. [2020-11-12 01:03:43,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-12 01:03:43,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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 [2020-11-12 01:03:43,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 01:03:43,527 INFO L225 Difference]: With dead ends: 24543 [2020-11-12 01:03:43,527 INFO L226 Difference]: Without dead ends: 24543 [2020-11-12 01:03:43,527 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-12 01:03:43,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24543 states. [2020-11-12 01:03:44,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24543 to 23577. [2020-11-12 01:03:44,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23577 states, 23545 states have (on average 4.091654279040136) internal successors, (96338), 23576 states have internal predecessors, (96338), 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) [2020-11-12 01:03:44,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23577 states to 23577 states and 96338 transitions. [2020-11-12 01:03:44,758 INFO L78 Accepts]: Start accepts. Automaton has 23577 states and 96338 transitions. Word has length 8 [2020-11-12 01:03:44,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 01:03:44,758 INFO L481 AbstractCegarLoop]: Abstraction has 23577 states and 96338 transitions. [2020-11-12 01:03:44,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2020-11-12 01:03:44,759 INFO L276 IsEmpty]: Start isEmpty. Operand 23577 states and 96338 transitions. [2020-11-12 01:03:44,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-12 01:03:44,760 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 01:03:44,760 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 01:03:44,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-12 01:03:44,760 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 01:03:44,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 01:03:44,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1617977814, now seen corresponding path program 1 times [2020-11-12 01:03:44,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 01:03:44,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253152800] [2020-11-12 01:03:44,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 01:03:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 01:03:44,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-12 01:03:44,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253152800] [2020-11-12 01:03:44,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410502958] [2020-11-12 01:03:44,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 01:03:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 01:03:45,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-12 01:03:45,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 01:03:45,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-12 01:03:45,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 01:03:45,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-11-12 01:03:45,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273713632] [2020-11-12 01:03:45,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 01:03:45,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 01:03:45,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 01:03:45,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-12 01:03:45,250 INFO L87 Difference]: Start difference. First operand 23577 states and 96338 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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) [2020-11-12 01:03:45,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 01:03:45,456 INFO L93 Difference]: Finished difference Result 23573 states and 96327 transitions. [2020-11-12 01:03:45,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-12 01:03:45,457 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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 16 [2020-11-12 01:03:45,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 01:03:45,562 INFO L225 Difference]: With dead ends: 23573 [2020-11-12 01:03:45,563 INFO L226 Difference]: Without dead ends: 23573 [2020-11-12 01:03:45,563 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-12 01:03:45,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23573 states. [2020-11-12 01:03:46,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23573 to 23573. [2020-11-12 01:03:46,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23573 states, 23541 states have (on average 4.091882247992864) internal successors, (96327), 23572 states have internal predecessors, (96327), 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) [2020-11-12 01:03:46,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23573 states to 23573 states and 96327 transitions. [2020-11-12 01:03:46,948 INFO L78 Accepts]: Start accepts. Automaton has 23573 states and 96327 transitions. Word has length 16 [2020-11-12 01:03:46,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 01:03:46,949 INFO L481 AbstractCegarLoop]: Abstraction has 23573 states and 96327 transitions. [2020-11-12 01:03:46,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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) [2020-11-12 01:03:46,949 INFO L276 IsEmpty]: Start isEmpty. Operand 23573 states and 96327 transitions. [2020-11-12 01:03:46,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-12 01:03:46,952 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 01:03:46,953 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 01:03:47,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-12 01:03:47,164 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 01:03:47,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 01:03:47,165 INFO L82 PathProgramCache]: Analyzing trace with hash 562572822, now seen corresponding path program 1 times [2020-11-12 01:03:47,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 01:03:47,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554571776] [2020-11-12 01:03:47,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 01:03:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 01:03:47,245 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-12 01:03:47,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554571776] [2020-11-12 01:03:47,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181258371] [2020-11-12 01:03:47,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 01:03:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 01:03:47,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-12 01:03:47,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 01:03:47,392 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-12 01:03:47,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 01:03:47,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-11-12 01:03:47,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624492928] [2020-11-12 01:03:47,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 01:03:47,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 01:03:47,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 01:03:47,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-11-12 01:03:47,394 INFO L87 Difference]: Start difference. First operand 23573 states and 96327 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 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) [2020-11-12 01:03:47,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 01:03:47,627 INFO L93 Difference]: Finished difference Result 23557 states and 96271 transitions. [2020-11-12 01:03:47,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 01:03:47,628 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 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 20 [2020-11-12 01:03:47,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 01:03:47,746 INFO L225 Difference]: With dead ends: 23557 [2020-11-12 01:03:47,746 INFO L226 Difference]: Without dead ends: 23557 [2020-11-12 01:03:47,747 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-11-12 01:03:48,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23557 states. [2020-11-12 01:03:48,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23557 to 23557. [2020-11-12 01:03:48,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23557 states, 23525 states have (on average 4.092284803400638) internal successors, (96271), 23556 states have internal predecessors, (96271), 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) [2020-11-12 01:03:49,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23557 states to 23557 states and 96271 transitions. [2020-11-12 01:03:49,021 INFO L78 Accepts]: Start accepts. Automaton has 23557 states and 96271 transitions. Word has length 20 [2020-11-12 01:03:49,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 01:03:49,022 INFO L481 AbstractCegarLoop]: Abstraction has 23557 states and 96271 transitions. [2020-11-12 01:03:49,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 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) [2020-11-12 01:03:49,022 INFO L276 IsEmpty]: Start isEmpty. Operand 23557 states and 96271 transitions. [2020-11-12 01:03:49,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-12 01:03:49,030 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 01:03:49,030 INFO L494 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 01:03:49,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-12 01:03:49,231 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 01:03:49,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 01:03:49,231 INFO L82 PathProgramCache]: Analyzing trace with hash -2141550006, now seen corresponding path program 1 times [2020-11-12 01:03:49,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 01:03:49,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977460544] [2020-11-12 01:03:49,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 01:03:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-12 01:03:49,247 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-12 01:03:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-12 01:03:49,258 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-12 01:03:49,266 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-12 01:03:49,267 INFO L595 BasicCegarLoop]: Counterexample might be feasible [2020-11-12 01:03:49,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-12 01:03:49,267 WARN L386 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-11-12 01:03:49,267 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-11-12 01:03:49,279 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,280 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,280 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,280 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,280 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,280 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,280 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,280 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,280 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,281 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,281 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,281 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,281 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,281 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,281 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,282 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,282 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,282 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,282 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,282 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,282 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,282 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,282 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,283 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,283 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,283 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,283 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,285 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,285 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,285 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,285 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,285 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,285 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,286 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,286 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,286 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,286 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,286 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,286 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,286 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,286 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,287 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,287 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,287 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,287 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,287 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,287 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,287 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,287 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,288 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,288 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,288 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,288 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,288 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,288 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,288 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,289 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,289 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,289 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,289 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,289 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,289 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,289 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,289 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,290 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,290 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,290 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,290 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,290 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,290 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,290 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,291 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,291 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,291 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,291 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,291 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,291 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,291 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,291 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,291 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,292 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,292 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,292 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,292 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,292 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,292 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,293 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,293 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,293 WARN L313 ript$VariableManager]: TermVariabe thrThread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,294 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,294 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,294 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,295 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,295 WARN L313 ript$VariableManager]: TermVariabe thrThread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,296 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,296 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,296 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,296 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,296 WARN L313 ript$VariableManager]: TermVariabe thrThread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,298 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,298 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,298 WARN L313 ript$VariableManager]: TermVariabe thrThread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,298 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,298 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,299 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,299 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,300 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,300 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,300 WARN L313 ript$VariableManager]: TermVariabe thrThread5of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,302 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,302 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,302 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,302 WARN L313 ript$VariableManager]: TermVariabe thrThread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,302 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:03:49,308 INFO L149 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2020-11-12 01:03:49,308 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-12 01:03:49,309 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 01:03:49,309 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 01:03:49,310 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 01:03:49,310 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 01:03:49,310 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 01:03:49,310 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 01:03:49,310 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 01:03:49,310 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 01:03:49,311 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-12 01:03:49,312 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 115 transitions, 308 flow [2020-11-12 01:03:49,312 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 115 transitions, 308 flow [2020-11-12 01:03:49,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 115 places, 115 transitions, 308 flow [2020-11-12 01:03:49,659 INFO L129 PetriNetUnfolder]: 463/2615 cut-off events. [2020-11-12 01:03:49,659 INFO L130 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2020-11-12 01:03:49,675 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2847 conditions, 2615 events. 463/2615 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 18900 event pairs, 72 based on Foata normal form. 0/2152 useless extension candidates. Maximal degree in co-relation 1435. Up to 192 conditions per place. [2020-11-12 01:03:49,729 INFO L116 LiptonReduction]: Number of co-enabled transitions 3960 [2020-11-12 01:03:52,498 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-11-12 01:03:53,376 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2020-11-12 01:03:53,666 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-11-12 01:03:53,908 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-11-12 01:03:54,456 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2020-11-12 01:03:54,743 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-12 01:03:55,129 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2020-11-12 01:03:55,456 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2020-11-12 01:03:55,465 INFO L131 LiptonReduction]: Checked pairs total: 13338 [2020-11-12 01:03:55,465 INFO L133 LiptonReduction]: Total number of compositions: 89 [2020-11-12 01:03:55,465 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 43 transitions, 164 flow [2020-11-12 01:04:25,343 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 127122 states, 126992 states have (on average 4.845966675066146) internal successors, (615399), 127121 states have internal predecessors, (615399), 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) [2020-11-12 01:04:25,488 INFO L276 IsEmpty]: Start isEmpty. Operand has 127122 states, 126992 states have (on average 4.845966675066146) internal successors, (615399), 127121 states have internal predecessors, (615399), 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) [2020-11-12 01:04:25,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-12 01:04:25,488 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 01:04:25,488 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-12 01:04:25,489 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 01:04:25,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 01:04:25,489 INFO L82 PathProgramCache]: Analyzing trace with hash 39578910, now seen corresponding path program 1 times [2020-11-12 01:04:25,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 01:04:25,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650167749] [2020-11-12 01:04:25,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 01:04:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 01:04:25,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 01:04:25,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650167749] [2020-11-12 01:04:25,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 01:04:25,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-12 01:04:25,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424802586] [2020-11-12 01:04:25,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-12 01:04:25,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 01:04:25,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-12 01:04:25,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 01:04:25,702 INFO L87 Difference]: Start difference. First operand has 127122 states, 126992 states have (on average 4.845966675066146) internal successors, (615399), 127121 states have internal predecessors, (615399), 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 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2020-11-12 01:04:27,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 01:04:27,407 INFO L93 Difference]: Finished difference Result 127122 states and 615398 transitions. [2020-11-12 01:04:27,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-12 01:04:27,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2020-11-12 01:04:27,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 01:04:29,055 INFO L225 Difference]: With dead ends: 127122 [2020-11-12 01:04:29,055 INFO L226 Difference]: Without dead ends: 111496 [2020-11-12 01:04:29,055 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-12 01:04:32,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111496 states. [2020-11-12 01:04:35,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111496 to 111496. [2020-11-12 01:04:35,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111496 states, 111431 states have (on average 4.877655230591128) internal successors, (543522), 111495 states have internal predecessors, (543522), 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) [2020-11-12 01:04:36,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111496 states to 111496 states and 543522 transitions. [2020-11-12 01:04:36,845 INFO L78 Accepts]: Start accepts. Automaton has 111496 states and 543522 transitions. Word has length 4 [2020-11-12 01:04:36,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 01:04:36,845 INFO L481 AbstractCegarLoop]: Abstraction has 111496 states and 543522 transitions. [2020-11-12 01:04:36,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2020-11-12 01:04:36,846 INFO L276 IsEmpty]: Start isEmpty. Operand 111496 states and 543522 transitions. [2020-11-12 01:04:36,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-12 01:04:36,846 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 01:04:36,846 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 01:04:36,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-12 01:04:36,846 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 01:04:36,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 01:04:36,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1987186134, now seen corresponding path program 1 times [2020-11-12 01:04:36,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 01:04:36,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931568695] [2020-11-12 01:04:36,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 01:04:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 01:04:36,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-12 01:04:36,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931568695] [2020-11-12 01:04:36,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 01:04:36,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-12 01:04:36,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93202686] [2020-11-12 01:04:36,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-12 01:04:36,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 01:04:36,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-12 01:04:36,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-12 01:04:36,888 INFO L87 Difference]: Start difference. First operand 111496 states and 543522 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2020-11-12 01:04:38,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 01:04:38,857 INFO L93 Difference]: Finished difference Result 120747 states and 568406 transitions. [2020-11-12 01:04:38,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-12 01:04:38,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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 [2020-11-12 01:04:38,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 01:04:39,522 INFO L225 Difference]: With dead ends: 120747 [2020-11-12 01:04:39,522 INFO L226 Difference]: Without dead ends: 120747 [2020-11-12 01:04:39,523 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-12 01:04:42,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120747 states. [2020-11-12 01:04:45,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120747 to 116197. [2020-11-12 01:04:45,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116197 states, 116133 states have (on average 4.734743785142896) internal successors, (549860), 116196 states have internal predecessors, (549860), 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) [2020-11-12 01:04:47,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116197 states to 116197 states and 549860 transitions. [2020-11-12 01:04:47,176 INFO L78 Accepts]: Start accepts. Automaton has 116197 states and 549860 transitions. Word has length 8 [2020-11-12 01:04:47,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 01:04:47,176 INFO L481 AbstractCegarLoop]: Abstraction has 116197 states and 549860 transitions. [2020-11-12 01:04:47,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2020-11-12 01:04:47,177 INFO L276 IsEmpty]: Start isEmpty. Operand 116197 states and 549860 transitions. [2020-11-12 01:04:47,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-12 01:04:47,178 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 01:04:47,178 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 01:04:47,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-12 01:04:47,178 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 01:04:47,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 01:04:47,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1886798167, now seen corresponding path program 1 times [2020-11-12 01:04:47,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 01:04:47,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928775952] [2020-11-12 01:04:47,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 01:04:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 01:04:47,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-12 01:04:47,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928775952] [2020-11-12 01:04:47,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264378012] [2020-11-12 01:04:47,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 01:04:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 01:04:47,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-12 01:04:47,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 01:04:47,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-12 01:04:47,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 01:04:47,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-11-12 01:04:47,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451560127] [2020-11-12 01:04:47,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 01:04:47,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 01:04:47,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 01:04:47,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-12 01:04:47,349 INFO L87 Difference]: Start difference. First operand 116197 states and 549860 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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) [2020-11-12 01:04:49,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 01:04:49,158 INFO L93 Difference]: Finished difference Result 116193 states and 549849 transitions. [2020-11-12 01:04:49,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-12 01:04:49,158 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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 16 [2020-11-12 01:04:49,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 01:04:49,702 INFO L225 Difference]: With dead ends: 116193 [2020-11-12 01:04:49,702 INFO L226 Difference]: Without dead ends: 116193 [2020-11-12 01:04:49,703 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-12 01:04:52,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116193 states. [2020-11-12 01:04:55,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116193 to 116193. [2020-11-12 01:04:55,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116193 states, 116129 states have (on average 4.73481214855893) internal successors, (549849), 116192 states have internal predecessors, (549849), 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) [2020-11-12 01:04:57,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116193 states to 116193 states and 549849 transitions. [2020-11-12 01:04:57,670 INFO L78 Accepts]: Start accepts. Automaton has 116193 states and 549849 transitions. Word has length 16 [2020-11-12 01:04:57,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 01:04:57,670 INFO L481 AbstractCegarLoop]: Abstraction has 116193 states and 549849 transitions. [2020-11-12 01:04:57,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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) [2020-11-12 01:04:57,670 INFO L276 IsEmpty]: Start isEmpty. Operand 116193 states and 549849 transitions. [2020-11-12 01:04:57,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-12 01:04:57,673 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 01:04:57,673 INFO L494 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 01:04:57,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 01:04:57,886 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 01:04:57,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 01:04:57,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1894305886, now seen corresponding path program 1 times [2020-11-12 01:04:57,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 01:04:57,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021372988] [2020-11-12 01:04:57,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 01:04:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 01:04:57,938 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-12 01:04:57,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021372988] [2020-11-12 01:04:57,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785731677] [2020-11-12 01:04:57,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 01:04:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 01:04:58,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-12 01:04:58,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 01:04:58,059 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-12 01:04:58,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 01:04:58,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-11-12 01:04:58,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115795526] [2020-11-12 01:04:58,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 01:04:58,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 01:04:58,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 01:04:58,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-11-12 01:04:58,062 INFO L87 Difference]: Start difference. First operand 116193 states and 549849 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 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) [2020-11-12 01:05:00,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 01:05:00,027 INFO L93 Difference]: Finished difference Result 116177 states and 549793 transitions. [2020-11-12 01:05:00,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-12 01:05:00,027 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 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 20 [2020-11-12 01:05:00,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 01:05:00,643 INFO L225 Difference]: With dead ends: 116177 [2020-11-12 01:05:00,643 INFO L226 Difference]: Without dead ends: 116177 [2020-11-12 01:05:00,643 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-11-12 01:05:03,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116177 states. [2020-11-12 01:05:06,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116177 to 116177. [2020-11-12 01:05:07,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116177 states, 116113 states have (on average 4.7349823017233215) internal successors, (549793), 116176 states have internal predecessors, (549793), 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) [2020-11-12 01:05:07,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116177 states to 116177 states and 549793 transitions. [2020-11-12 01:05:07,565 INFO L78 Accepts]: Start accepts. Automaton has 116177 states and 549793 transitions. Word has length 20 [2020-11-12 01:05:07,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 01:05:07,565 INFO L481 AbstractCegarLoop]: Abstraction has 116177 states and 549793 transitions. [2020-11-12 01:05:07,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 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) [2020-11-12 01:05:07,565 INFO L276 IsEmpty]: Start isEmpty. Operand 116177 states and 549793 transitions. [2020-11-12 01:05:07,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-12 01:05:07,572 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 01:05:07,572 INFO L494 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 01:05:07,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-11-12 01:05:07,773 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 01:05:07,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 01:05:07,774 INFO L82 PathProgramCache]: Analyzing trace with hash 422752852, now seen corresponding path program 1 times [2020-11-12 01:05:07,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 01:05:07,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140979860] [2020-11-12 01:05:07,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 01:05:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 01:05:07,833 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-12 01:05:07,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140979860] [2020-11-12 01:05:07,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750143673] [2020-11-12 01:05:07,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 01:05:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 01:05:08,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-12 01:05:08,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-12 01:05:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-12 01:05:09,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-12 01:05:09,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-11-12 01:05:09,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2423580] [2020-11-12 01:05:09,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-12 01:05:09,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 01:05:09,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-12 01:05:09,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2020-11-12 01:05:09,121 INFO L87 Difference]: Start difference. First operand 116177 states and 549793 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 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) [2020-11-12 01:05:10,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 01:05:10,166 INFO L93 Difference]: Finished difference Result 116113 states and 549521 transitions. [2020-11-12 01:05:10,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-12 01:05:10,168 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 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 24 [2020-11-12 01:05:10,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 01:05:11,531 INFO L225 Difference]: With dead ends: 116113 [2020-11-12 01:05:11,531 INFO L226 Difference]: Without dead ends: 116113 [2020-11-12 01:05:11,532 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2020-11-12 01:05:14,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116113 states. [2020-11-12 01:05:16,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116113 to 116113. [2020-11-12 01:05:17,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116113 states, 116049 states have (on average 4.7352497651853955) internal successors, (549521), 116112 states have internal predecessors, (549521), 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) [2020-11-12 01:05:18,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116113 states to 116113 states and 549521 transitions. [2020-11-12 01:05:18,930 INFO L78 Accepts]: Start accepts. Automaton has 116113 states and 549521 transitions. Word has length 24 [2020-11-12 01:05:18,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 01:05:18,930 INFO L481 AbstractCegarLoop]: Abstraction has 116113 states and 549521 transitions. [2020-11-12 01:05:18,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 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) [2020-11-12 01:05:18,930 INFO L276 IsEmpty]: Start isEmpty. Operand 116113 states and 549521 transitions. [2020-11-12 01:05:18,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-12 01:05:18,977 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 01:05:18,977 INFO L494 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 01:05:19,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-12 01:05:19,187 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 01:05:19,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 01:05:19,189 INFO L82 PathProgramCache]: Analyzing trace with hash 840212873, now seen corresponding path program 1 times [2020-11-12 01:05:19,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 01:05:19,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834033769] [2020-11-12 01:05:19,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 01:05:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-12 01:05:19,201 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-12 01:05:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-12 01:05:19,218 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-12 01:05:19,237 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-12 01:05:19,237 INFO L595 BasicCegarLoop]: Counterexample might be feasible [2020-11-12 01:05:19,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-12 01:05:19,238 WARN L386 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-11-12 01:05:19,238 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-11-12 01:05:19,249 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,249 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,249 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,249 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,249 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,249 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,249 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,249 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,250 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,250 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,250 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,250 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,250 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,250 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,251 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,251 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,251 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,251 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,251 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,251 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,251 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,251 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,251 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,252 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,252 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,252 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,252 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,252 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,252 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,252 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,252 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,253 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,253 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,253 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,253 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,253 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,253 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,253 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,253 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,254 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,254 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,254 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,254 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,254 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,254 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,254 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,254 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,255 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,255 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,255 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,255 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,255 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,255 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,255 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,255 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,255 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,256 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,256 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,256 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,256 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,256 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,256 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,256 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,256 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,257 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,257 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,257 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,257 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,257 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,257 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,257 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,258 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,258 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,258 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,258 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,258 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,258 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,258 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,258 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,259 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,259 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,259 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,259 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,259 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,259 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,259 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,260 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,260 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,260 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,260 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,260 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,260 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,260 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,260 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,261 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,261 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,261 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,261 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,261 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,261 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,262 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,262 WARN L313 ript$VariableManager]: TermVariabe thrThread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,262 WARN L313 ript$VariableManager]: TermVariabe |thrThread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,263 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,264 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,264 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,264 WARN L313 ript$VariableManager]: TermVariabe thrThread2of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,264 WARN L313 ript$VariableManager]: TermVariabe |thrThread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,265 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,265 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,265 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,266 WARN L313 ript$VariableManager]: TermVariabe |thrThread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,266 WARN L313 ript$VariableManager]: TermVariabe thrThread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,267 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,267 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,267 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,267 WARN L313 ript$VariableManager]: TermVariabe thrThread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,267 WARN L313 ript$VariableManager]: TermVariabe |thrThread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,268 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,269 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,269 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,269 WARN L313 ript$VariableManager]: TermVariabe |thrThread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,269 WARN L313 ript$VariableManager]: TermVariabe thrThread5of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,270 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,270 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,270 WARN L313 ript$VariableManager]: TermVariabe |thrThread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,271 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,271 WARN L313 ript$VariableManager]: TermVariabe thrThread6of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,272 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,272 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,272 WARN L313 ript$VariableManager]: TermVariabe |thrThread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,272 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,272 WARN L313 ript$VariableManager]: TermVariabe thrThread7of7ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 01:05:19,278 INFO L149 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2020-11-12 01:05:19,278 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-12 01:05:19,279 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 01:05:19,279 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 01:05:19,279 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 01:05:19,279 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 01:05:19,279 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 01:05:19,280 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 01:05:19,280 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 01:05:19,280 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 01:05:19,281 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-12 01:05:19,281 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 122 transitions, 342 flow [2020-11-12 01:05:19,282 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 122 transitions, 342 flow [2020-11-12 01:05:19,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 123 places, 122 transitions, 342 flow [2020-11-12 01:05:20,059 INFO L129 PetriNetUnfolder]: 977/5190 cut-off events. [2020-11-12 01:05:20,059 INFO L130 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2020-11-12 01:05:20,088 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5688 conditions, 5190 events. 977/5190 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 45094 event pairs, 201 based on Foata normal form. 0/4277 useless extension candidates. Maximal degree in co-relation 2833. Up to 448 conditions per place. [2020-11-12 01:05:20,201 INFO L116 LiptonReduction]: Number of co-enabled transitions 4900 [2020-11-12 01:05:22,412 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2020-11-12 01:05:23,949 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-11-12 01:05:24,184 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-11-12 01:05:24,972 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-11-12 01:05:25,107 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-11-12 01:05:25,366 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-11-12 01:05:25,493 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-11-12 01:05:25,660 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-12 01:05:25,948 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-11-12 01:05:26,123 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-12 01:05:26,446 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2020-11-12 01:05:26,454 INFO L131 LiptonReduction]: Checked pairs total: 19114 [2020-11-12 01:05:26,455 INFO L133 LiptonReduction]: Total number of compositions: 90 [2020-11-12 01:05:26,455 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 48 transitions, 194 flow Received shutdown request... [2020-11-12 01:16:30,858 WARN L546 AbstractCegarLoop]: Verification canceled [2020-11-12 01:16:30,861 WARN L250 ceAbstractionStarter]: Timeout [2020-11-12 01:16:30,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 01:16:30 BasicIcfg [2020-11-12 01:16:30,861 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 01:16:30,862 INFO L168 Benchmark]: Toolchain (without parser) took 805640.89 ms. Allocated memory was 302.0 MB in the beginning and 15.5 GB in the end (delta: 15.2 GB). Free memory was 276.0 MB in the beginning and 12.9 GB in the end (delta: -12.6 GB). Peak memory consumption was 8.2 GB. Max. memory is 16.0 GB. [2020-11-12 01:16:30,863 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 302.0 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 01:16:30,863 INFO L168 Benchmark]: CACSL2BoogieTranslator took 733.22 ms. Allocated memory is still 302.0 MB. Free memory was 275.3 MB in the beginning and 275.2 MB in the end (delta: 95.2 kB). Peak memory consumption was 29.0 MB. Max. memory is 16.0 GB. [2020-11-12 01:16:30,863 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.57 ms. Allocated memory is still 302.0 MB. Free memory was 275.2 MB in the beginning and 273.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 01:16:30,865 INFO L168 Benchmark]: Boogie Preprocessor took 61.45 ms. Allocated memory is still 302.0 MB. Free memory was 273.5 MB in the beginning and 271.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 01:16:30,866 INFO L168 Benchmark]: RCFGBuilder took 735.51 ms. Allocated memory is still 302.0 MB. Free memory was 271.8 MB in the beginning and 249.6 MB in the end (delta: 22.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-11-12 01:16:30,866 INFO L168 Benchmark]: TraceAbstraction took 804008.36 ms. Allocated memory was 302.0 MB in the beginning and 15.5 GB in the end (delta: 15.2 GB). Free memory was 249.2 MB in the beginning and 12.9 GB in the end (delta: -12.7 GB). Peak memory consumption was 8.2 GB. Max. memory is 16.0 GB. [2020-11-12 01:16:30,868 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 302.0 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 733.22 ms. Allocated memory is still 302.0 MB. Free memory was 275.3 MB in the beginning and 275.2 MB in the end (delta: 95.2 kB). Peak memory consumption was 29.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 84.57 ms. Allocated memory is still 302.0 MB. Free memory was 275.2 MB in the beginning and 273.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 61.45 ms. Allocated memory is still 302.0 MB. Free memory was 273.5 MB in the beginning and 271.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 735.51 ms. Allocated memory is still 302.0 MB. Free memory was 271.8 MB in the beginning and 249.6 MB in the end (delta: 22.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 804008.36 ms. Allocated memory was 302.0 MB in the beginning and 15.5 GB in the end (delta: 15.2 GB). Free memory was 249.2 MB in the beginning and 12.9 GB in the end (delta: -12.7 GB). Peak memory consumption was 8.2 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 311 VarBasedMoverChecksPositive, 12 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 12 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 7 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 6.1s, 75 PlacesBefore, 15 PlacesAfterwards, 80 TransitionsBefore, 14 TransitionsAfterwards, 420 CoEnabledTransitionPairs, 6 FixpointIterations, 28 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 15 ConcurrentYvCompositions, 6 ChoiceCompositions, 83 TotalNumberOfCompositions, 484 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 722 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 19 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 70 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.8s, 83 PlacesBefore, 25 PlacesAfterwards, 87 TransitionsBefore, 23 TransitionsAfterwards, 1000 CoEnabledTransitionPairs, 7 FixpointIterations, 29 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 15 ConcurrentYvCompositions, 6 ChoiceCompositions, 86 TotalNumberOfCompositions, 2849 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1251 VarBasedMoverChecksPositive, 39 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 176 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.7s, 91 PlacesBefore, 31 PlacesAfterwards, 94 TransitionsBefore, 28 TransitionsAfterwards, 1620 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 13 ConcurrentYvCompositions, 6 ChoiceCompositions, 81 TotalNumberOfCompositions, 4962 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1602 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 218 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.6s, 99 PlacesBefore, 37 PlacesAfterwards, 101 TransitionsBefore, 33 TransitionsAfterwards, 2320 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 14 ConcurrentYvCompositions, 6 ChoiceCompositions, 85 TotalNumberOfCompositions, 7598 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2463 VarBasedMoverChecksPositive, 88 VarBasedMoverChecksNegative, 20 SemBasedMoverChecksPositive, 68 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 543 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 5.3s, 107 PlacesBefore, 43 PlacesAfterwards, 108 TransitionsBefore, 38 TransitionsAfterwards, 3100 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 12 ConcurrentYvCompositions, 6 ChoiceCompositions, 87 TotalNumberOfCompositions, 11860 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 2936 VarBasedMoverChecksPositive, 76 VarBasedMoverChecksNegative, 30 SemBasedMoverChecksPositive, 46 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.7s, 615 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 6.1s, 115 PlacesBefore, 49 PlacesAfterwards, 115 TransitionsBefore, 43 TransitionsAfterwards, 3960 CoEnabledTransitionPairs, 5 FixpointIterations, 26 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 13 ConcurrentYvCompositions, 6 ChoiceCompositions, 89 TotalNumberOfCompositions, 13338 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 3489 VarBasedMoverChecksPositive, 98 VarBasedMoverChecksNegative, 42 SemBasedMoverChecksPositive, 56 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 800 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 7.1s, 123 PlacesBefore, 55 PlacesAfterwards, 122 TransitionsBefore, 48 TransitionsAfterwards, 4900 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 13 ConcurrentYvCompositions, 6 ChoiceCompositions, 90 TotalNumberOfCompositions, 19114 MoverChecksTotal - TimeoutResultAtElement [Line: 683]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 683). Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 55 places, 48 transitions, 194 flow. Already constructed 494690 states. Currently 24654 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 72 locations, 1 error locations. Started 7 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 803.6s, OverallIterations: 23, TraceHistogramMax: 7, AutomataDifference: 16.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 737.1s, HoareTripleCheckerStatistics: 570 SDtfs, 659 SDslu, 669 SDs, 0 SdLazy, 277 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 155 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127122occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 44.1s AutomataMinimizationTime, 17 MinimizatonAttempts, 5840 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 389 NumberOfCodeBlocks, 389 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 265 ConstructedInterpolants, 0 QuantifiedInterpolants, 17753 SizeOfPredicates, 6 NumberOfNonLiveVariables, 662 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 23 InterpolantComputations, 11 PerfectInterpolantSequences, 29/89 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 could not prove your program: Timeout Completed graceful shutdown