/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/ThreadIdTest2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 14:02:20,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 14:02:20,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 14:02:20,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 14:02:20,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 14:02:20,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 14:02:20,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 14:02:20,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 14:02:20,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 14:02:20,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 14:02:20,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 14:02:20,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 14:02:20,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 14:02:20,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 14:02:20,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 14:02:20,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 14:02:20,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 14:02:20,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 14:02:20,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 14:02:20,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 14:02:20,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 14:02:20,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 14:02:20,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 14:02:20,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 14:02:20,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 14:02:20,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 14:02:20,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 14:02:20,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 14:02:20,571 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2021-03-11 14:02:20,599 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 14:02:20,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 14:02:20,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 14:02:20,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 14:02:20,602 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 14:02:20,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 14:02:20,602 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 14:02:20,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 14:02:20,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 14:02:20,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 14:02:20,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 14:02:20,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 14:02:20,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 14:02:20,604 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 14:02:20,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 14:02:20,604 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 14:02:20,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 14:02:20,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 14:02:20,605 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 14:02:20,605 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 14:02:20,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 14:02:20,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 14:02:20,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 14:02:20,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 14:02:20,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 14:02:20,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 14:02:20,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 14:02:20,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 14:02:20,606 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 14:02:20,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 14:02:20,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 14:02:20,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 14:02:20,914 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 14:02:20,917 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 14:02:20,918 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/ThreadIdTest2.c [2021-03-11 14:02:20,963 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa743749/150c4b883bb44f01aec169ec351ebb59/FLAG1c42163cd [2021-03-11 14:02:21,372 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 14:02:21,372 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/ThreadIdTest2.c [2021-03-11 14:02:21,372 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-11 14:02:21,372 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-11 14:02:21,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa743749/150c4b883bb44f01aec169ec351ebb59/FLAG1c42163cd [2021-03-11 14:02:21,768 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa743749/150c4b883bb44f01aec169ec351ebb59 [2021-03-11 14:02:21,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 14:02:21,773 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 14:02:21,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 14:02:21,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 14:02:21,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 14:02:21,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:02:21" (1/1) ... [2021-03-11 14:02:21,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55f73a25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:02:21, skipping insertion in model container [2021-03-11 14:02:21,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:02:21" (1/1) ... [2021-03-11 14:02:21,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 14:02:21,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 14:02:21,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 14:02:21,946 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 14:02:21,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 14:02:21,969 INFO L208 MainTranslator]: Completed translation [2021-03-11 14:02:21,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:02:21 WrapperNode [2021-03-11 14:02:21,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 14:02:21,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 14:02:21,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 14:02:21,972 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 14:02:21,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:02:21" (1/1) ... [2021-03-11 14:02:21,989 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:02:21" (1/1) ... [2021-03-11 14:02:22,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 14:02:22,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 14:02:22,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 14:02:22,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 14:02:22,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:02:21" (1/1) ... [2021-03-11 14:02:22,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:02:21" (1/1) ... [2021-03-11 14:02:22,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:02:21" (1/1) ... [2021-03-11 14:02:22,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:02:21" (1/1) ... [2021-03-11 14:02:22,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:02:21" (1/1) ... [2021-03-11 14:02:22,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:02:21" (1/1) ... [2021-03-11 14:02:22,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:02:21" (1/1) ... [2021-03-11 14:02:22,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 14:02:22,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 14:02:22,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 14:02:22,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 14:02:22,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:02:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 14:02:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 14:02:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure dec [2021-03-11 14:02:22,109 INFO L138 BoogieDeclarations]: Found implementation of procedure dec [2021-03-11 14:02:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 14:02:22,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 14:02:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-11 14:02:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 14:02:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 14:02:22,111 INFO L130 BoogieDeclarations]: Found specification of procedure inc [2021-03-11 14:02:22,111 INFO L138 BoogieDeclarations]: Found implementation of procedure inc [2021-03-11 14:02:22,112 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 14:02:22,364 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 14:02:22,364 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-11 14:02:22,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:02:22 BoogieIcfgContainer [2021-03-11 14:02:22,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 14:02:22,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 14:02:22,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 14:02:22,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 14:02:22,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:02:21" (1/3) ... [2021-03-11 14:02:22,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5665c3a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:02:22, skipping insertion in model container [2021-03-11 14:02:22,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:02:21" (2/3) ... [2021-03-11 14:02:22,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5665c3a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:02:22, skipping insertion in model container [2021-03-11 14:02:22,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:02:22" (3/3) ... [2021-03-11 14:02:22,387 INFO L111 eAbstractionObserver]: Analyzing ICFG ThreadIdTest2.c [2021-03-11 14:02:22,392 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 14:02:22,392 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 14:02:22,394 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 14:02:22,395 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 14:02:22,450 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,450 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,450 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,450 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,451 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,451 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,451 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,451 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,451 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,451 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,451 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,451 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,452 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,452 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,452 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,452 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,452 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,452 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,453 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,453 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,453 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,453 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,453 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,453 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,453 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,453 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,453 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,454 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,454 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,454 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,454 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,454 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,454 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,454 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,455 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,455 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,456 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,456 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,456 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,456 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,457 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,470 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,471 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,471 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,471 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,471 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:02:22,480 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-11 14:02:22,494 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-11 14:02:22,512 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 14:02:22,512 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 14:02:22,512 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 14:02:22,512 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 14:02:22,512 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 14:02:22,513 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 14:02:22,513 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 14:02:22,513 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 14:02:22,521 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 14:02:22,529 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 42 transitions, 100 flow [2021-03-11 14:02:22,531 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 42 transitions, 100 flow [2021-03-11 14:02:22,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 42 transitions, 100 flow [2021-03-11 14:02:22,558 INFO L129 PetriNetUnfolder]: 0/51 cut-off events. [2021-03-11 14:02:22,559 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-11 14:02:22,560 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 51 events. 0/51 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 14:02:22,562 INFO L116 LiptonReduction]: Number of co-enabled transitions 444 [2021-03-11 14:02:23,820 INFO L131 LiptonReduction]: Checked pairs total: 802 [2021-03-11 14:02:23,820 INFO L133 LiptonReduction]: Total number of compositions: 25 [2021-03-11 14:02:23,826 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 50 flow [2021-03-11 14:02:23,834 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 56 states, 52 states have (on average 1.8269230769230769) internal successors, (95), 55 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:02:23,835 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 52 states have (on average 1.8269230769230769) internal successors, (95), 55 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:02:23,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-03-11 14:02:23,853 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:02:23,854 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:02:23,854 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 14:02:23,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:02:23,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1442814325, now seen corresponding path program 1 times [2021-03-11 14:02:23,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:02:23,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214382790] [2021-03-11 14:02:23,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:02:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:02:23,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:02:23,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:02:23,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:02:23,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:02:23,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:02:23,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214382790] [2021-03-11 14:02:23,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:02:23,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 14:02:23,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456379939] [2021-03-11 14:02:23,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 14:02:23,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:02:24,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 14:02:24,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:02:24,006 INFO L87 Difference]: Start difference. First operand has 56 states, 52 states have (on average 1.8269230769230769) internal successors, (95), 55 states have internal predecessors, (95), 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, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:02:24,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:02:24,042 INFO L93 Difference]: Finished difference Result 56 states and 89 transitions. [2021-03-11 14:02:24,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 14:02:24,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-03-11 14:02:24,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:02:24,049 INFO L225 Difference]: With dead ends: 56 [2021-03-11 14:02:24,049 INFO L226 Difference]: Without dead ends: 40 [2021-03-11 14:02:24,050 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:02:24,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-03-11 14:02:24,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-03-11 14:02:24,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 38 states have (on average 1.631578947368421) internal successors, (62), 39 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:02:24,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 62 transitions. [2021-03-11 14:02:24,075 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 62 transitions. Word has length 11 [2021-03-11 14:02:24,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:02:24,075 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 62 transitions. [2021-03-11 14:02:24,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:02:24,076 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 62 transitions. [2021-03-11 14:02:24,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-03-11 14:02:24,076 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:02:24,077 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:02:24,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 14:02:24,077 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 14:02:24,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:02:24,078 INFO L82 PathProgramCache]: Analyzing trace with hash 730813891, now seen corresponding path program 1 times [2021-03-11 14:02:24,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:02:24,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628689133] [2021-03-11 14:02:24,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:02:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:02:24,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:02:24,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:02:24,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:02:24,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:02:24,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:02:24,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:02:24,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:02:24,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 14:02:24,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:02:24,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628689133] [2021-03-11 14:02:24,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:02:24,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 14:02:24,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121104421] [2021-03-11 14:02:24,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 14:02:24,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:02:24,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 14:02:24,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 14:02:24,132 INFO L87 Difference]: Start difference. First operand 40 states and 62 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:02:24,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:02:24,180 INFO L93 Difference]: Finished difference Result 47 states and 68 transitions. [2021-03-11 14:02:24,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 14:02:24,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-03-11 14:02:24,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:02:24,182 INFO L225 Difference]: With dead ends: 47 [2021-03-11 14:02:24,182 INFO L226 Difference]: Without dead ends: 41 [2021-03-11 14:02:24,183 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-11 14:02:24,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-03-11 14:02:24,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2021-03-11 14:02:24,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 39 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:02:24,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 58 transitions. [2021-03-11 14:02:24,187 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 58 transitions. Word has length 13 [2021-03-11 14:02:24,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:02:24,188 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 58 transitions. [2021-03-11 14:02:24,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:02:24,188 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 58 transitions. [2021-03-11 14:02:24,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-03-11 14:02:24,189 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:02:24,189 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:02:24,189 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 14:02:24,189 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 14:02:24,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:02:24,190 INFO L82 PathProgramCache]: Analyzing trace with hash 729920161, now seen corresponding path program 2 times [2021-03-11 14:02:24,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:02:24,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268430237] [2021-03-11 14:02:24,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:02:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:02:24,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:02:24,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:02:24,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:02:24,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:02:24,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:02:24,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:02:24,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:02:24,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 14:02:24,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:02:24,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268430237] [2021-03-11 14:02:24,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:02:24,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 14:02:24,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442049772] [2021-03-11 14:02:24,246 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 14:02:24,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:02:24,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 14:02:24,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 14:02:24,247 INFO L87 Difference]: Start difference. First operand 40 states and 58 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:02:24,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:02:24,286 INFO L93 Difference]: Finished difference Result 42 states and 59 transitions. [2021-03-11 14:02:24,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 14:02:24,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-03-11 14:02:24,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:02:24,288 INFO L225 Difference]: With dead ends: 42 [2021-03-11 14:02:24,288 INFO L226 Difference]: Without dead ends: 33 [2021-03-11 14:02:24,288 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.0ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 14:02:24,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-03-11 14:02:24,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-03-11 14:02:24,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 32 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:02:24,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 47 transitions. [2021-03-11 14:02:24,292 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 47 transitions. Word has length 13 [2021-03-11 14:02:24,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:02:24,292 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 47 transitions. [2021-03-11 14:02:24,292 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:02:24,292 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 47 transitions. [2021-03-11 14:02:24,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-03-11 14:02:24,293 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:02:24,293 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:02:24,293 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 14:02:24,293 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 14:02:24,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:02:24,294 INFO L82 PathProgramCache]: Analyzing trace with hash -2035380707, now seen corresponding path program 3 times [2021-03-11 14:02:24,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:02:24,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061094399] [2021-03-11 14:02:24,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:02:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:02:24,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:02:24,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:02:24,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:02:24,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:02:24,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:02:24,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:02:24,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:02:24,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:02:24,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:02:24,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:02:24,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:02:24,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 14:02:24,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:02:24,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061094399] [2021-03-11 14:02:24,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:02:24,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:02:24,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920694050] [2021-03-11 14:02:24,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:02:24,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:02:24,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:02:24,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:02:24,415 INFO L87 Difference]: Start difference. First operand 33 states and 47 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:02:24,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:02:24,518 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2021-03-11 14:02:24,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:02:24,519 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-03-11 14:02:24,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:02:24,522 INFO L225 Difference]: With dead ends: 41 [2021-03-11 14:02:24,522 INFO L226 Difference]: Without dead ends: 35 [2021-03-11 14:02:24,523 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 81.9ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:02:24,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-03-11 14:02:24,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-03-11 14:02:24,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 34 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:02:24,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2021-03-11 14:02:24,531 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 13 [2021-03-11 14:02:24,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:02:24,531 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2021-03-11 14:02:24,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:02:24,531 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2021-03-11 14:02:24,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-03-11 14:02:24,532 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:02:24,532 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:02:24,532 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 14:02:24,532 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 14:02:24,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:02:24,534 INFO L82 PathProgramCache]: Analyzing trace with hash -2007675108, now seen corresponding path program 1 times [2021-03-11 14:02:24,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:02:24,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876074912] [2021-03-11 14:02:24,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:02:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:02:24,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:02:24,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-11 14:02:24,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:02:24,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:02:24,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:02:24,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-11 14:02:24,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:02:24,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 14:02:24,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:02:24,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:02:24,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:02:24,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876074912] [2021-03-11 14:02:24,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:02:24,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 14:02:24,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454944485] [2021-03-11 14:02:24,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 14:02:24,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:02:24,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 14:02:24,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-11 14:02:24,637 INFO L87 Difference]: Start difference. First operand 35 states and 50 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:02:24,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:02:24,680 INFO L93 Difference]: Finished difference Result 27 states and 39 transitions. [2021-03-11 14:02:24,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 14:02:24,681 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-03-11 14:02:24,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:02:24,681 INFO L225 Difference]: With dead ends: 27 [2021-03-11 14:02:24,682 INFO L226 Difference]: Without dead ends: 17 [2021-03-11 14:02:24,682 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 54.9ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:02:24,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-03-11 14:02:24,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-03-11 14:02:24,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:02:24,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-03-11 14:02:24,687 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2021-03-11 14:02:24,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:02:24,687 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-03-11 14:02:24,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:02:24,688 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-03-11 14:02:24,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-03-11 14:02:24,688 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:02:24,688 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:02:24,688 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 14:02:24,688 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 14:02:24,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:02:24,689 INFO L82 PathProgramCache]: Analyzing trace with hash -890488387, now seen corresponding path program 4 times [2021-03-11 14:02:24,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:02:24,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119278353] [2021-03-11 14:02:24,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:02:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:02:24,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:02:24,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:02:24,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:02:24,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:02:24,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:02:24,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:02:24,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:02:24,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:02:24,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:02:24,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:02:24,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:02:24,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 14:02:24,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:02:24,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119278353] [2021-03-11 14:02:24,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:02:24,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 14:02:24,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029236501] [2021-03-11 14:02:24,810 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 14:02:24,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:02:24,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 14:02:24,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-11 14:02:24,813 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:02:24,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:02:24,874 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-03-11 14:02:24,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:02:24,875 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-03-11 14:02:24,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:02:24,875 INFO L225 Difference]: With dead ends: 16 [2021-03-11 14:02:24,875 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 14:02:24,876 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 81.2ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:02:24,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 14:02:24,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 14:02:24,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:02:24,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 14:02:24,876 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-03-11 14:02:24,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:02:24,877 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 14:02:24,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:02:24,877 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 14:02:24,877 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 14:02:24,877 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 14:02:24,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:02:24 BasicIcfg [2021-03-11 14:02:24,881 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 14:02:24,882 INFO L168 Benchmark]: Toolchain (without parser) took 3111.08 ms. Allocated memory is still 337.6 MB. Free memory was 300.7 MB in the beginning and 253.0 MB in the end (delta: 47.7 MB). Peak memory consumption was 51.7 MB. Max. memory is 16.0 GB. [2021-03-11 14:02:24,883 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 337.6 MB. Free memory was 319.1 MB in the beginning and 319.1 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 14:02:24,885 INFO L168 Benchmark]: CACSL2BoogieTranslator took 194.95 ms. Allocated memory is still 337.6 MB. Free memory was 300.1 MB in the beginning and 316.8 MB in the end (delta: -16.7 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. [2021-03-11 14:02:24,885 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.97 ms. Allocated memory is still 337.6 MB. Free memory was 315.7 MB in the beginning and 320.8 MB in the end (delta: -5.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 14:02:24,885 INFO L168 Benchmark]: Boogie Preprocessor took 20.59 ms. Allocated memory is still 337.6 MB. Free memory was 320.8 MB in the beginning and 319.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 14:02:24,890 INFO L168 Benchmark]: RCFGBuilder took 324.92 ms. Allocated memory is still 337.6 MB. Free memory was 319.8 MB in the beginning and 305.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-11 14:02:24,890 INFO L168 Benchmark]: TraceAbstraction took 2514.81 ms. Allocated memory is still 337.6 MB. Free memory was 305.1 MB in the beginning and 253.0 MB in the end (delta: 52.1 MB). Peak memory consumption was 53.1 MB. Max. memory is 16.0 GB. [2021-03-11 14:02:24,895 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 337.6 MB. Free memory was 319.1 MB in the beginning and 319.1 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 194.95 ms. Allocated memory is still 337.6 MB. Free memory was 300.1 MB in the beginning and 316.8 MB in the end (delta: -16.7 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 44.97 ms. Allocated memory is still 337.6 MB. Free memory was 315.7 MB in the beginning and 320.8 MB in the end (delta: -5.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 20.59 ms. Allocated memory is still 337.6 MB. Free memory was 320.8 MB in the beginning and 319.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 324.92 ms. Allocated memory is still 337.6 MB. Free memory was 319.8 MB in the beginning and 305.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2514.81 ms. Allocated memory is still 337.6 MB. Free memory was 305.1 MB in the beginning and 253.0 MB in the end (delta: 52.1 MB). Peak memory consumption was 53.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1288.7ms, 48 PlacesBefore, 23 PlacesAfterwards, 42 TransitionsBefore, 17 TransitionsAfterwards, 444 CoEnabledTransitionPairs, 4 FixpointIterations, 8 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 25 TotalNumberOfCompositions, 802 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 564, positive: 517, positive conditional: 0, positive unconditional: 517, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 321, positive: 298, positive conditional: 0, positive unconditional: 298, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 321, positive: 298, positive conditional: 0, positive unconditional: 298, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 23, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 123, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 123, negative conditional: 0, negative unconditional: 123, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 564, positive: 219, positive conditional: 0, positive unconditional: 219, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 321, unknown conditional: 0, unknown unconditional: 321] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - PositiveResult [Line: 37]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2366.9ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 22.6ms, AutomataDifference: 371.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1320.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 90 SDtfs, 49 SDslu, 150 SDs, 0 SdLazy, 167 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 144.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 276.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=0, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 34.9ms AutomataMinimizationTime, 6 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.1ms SsaConstructionTime, 61.6ms SatisfiabilityAnalysisTime, 399.6ms InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 279 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...