/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-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/join_correct.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-22 01:23:19,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-22 01:23:19,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-22 01:23:19,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-22 01:23:19,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-22 01:23:19,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-22 01:23:19,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-22 01:23:19,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-22 01:23:19,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-22 01:23:19,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-22 01:23:19,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-22 01:23:19,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-22 01:23:19,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-22 01:23:19,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-22 01:23:19,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-22 01:23:19,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-22 01:23:19,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-22 01:23:19,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-22 01:23:19,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-22 01:23:19,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-22 01:23:19,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-22 01:23:19,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-22 01:23:19,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-22 01:23:19,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-22 01:23:19,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-22 01:23:19,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-22 01:23:19,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-22 01:23:19,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-22 01:23:19,975 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-NoLbe-Separate.epf [2021-05-22 01:23:20,004 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-22 01:23:20,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-22 01:23:20,005 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-22 01:23:20,005 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-22 01:23:20,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-22 01:23:20,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-22 01:23:20,007 INFO L138 SettingsManager]: * Use SBE=true [2021-05-22 01:23:20,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-22 01:23:20,007 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-22 01:23:20,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-22 01:23:20,008 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-22 01:23:20,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-22 01:23:20,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-22 01:23:20,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-22 01:23:20,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-22 01:23:20,009 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-22 01:23:20,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-22 01:23:20,009 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-22 01:23:20,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-22 01:23:20,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-22 01:23:20,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-22 01:23:20,009 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-22 01:23:20,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-22 01:23:20,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-22 01:23:20,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-22 01:23:20,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-22 01:23:20,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-22 01:23:20,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-22 01:23:20,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-22 01:23:20,010 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-22 01:23:20,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-22 01:23:20,010 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-05-22 01:23:20,010 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-22 01:23:20,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-22 01:23:20,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-22 01:23:20,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-22 01:23:20,300 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-22 01:23:20,300 INFO L275 PluginConnector]: CDTParser initialized [2021-05-22 01:23:20,301 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/join_correct.c [2021-05-22 01:23:20,353 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf1f9f8d1/5d2ef75863954c7aa98b2a1b3f5d08eb/FLAG20c8a60f7 [2021-05-22 01:23:20,980 INFO L306 CDTParser]: Found 1 translation units. [2021-05-22 01:23:20,980 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/join_correct.c [2021-05-22 01:23:20,980 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-05-22 01:23:21,003 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf1f9f8d1/5d2ef75863954c7aa98b2a1b3f5d08eb/FLAG20c8a60f7 [2021-05-22 01:23:21,374 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf1f9f8d1/5d2ef75863954c7aa98b2a1b3f5d08eb [2021-05-22 01:23:21,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-22 01:23:21,377 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-22 01:23:21,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-22 01:23:21,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-22 01:23:21,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-22 01:23:21,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.05 01:23:21" (1/1) ... [2021-05-22 01:23:21,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@357b08d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:21, skipping insertion in model container [2021-05-22 01:23:21,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.05 01:23:21" (1/1) ... [2021-05-22 01:23:21,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-22 01:23:21,395 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-22 01:23:21,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-22 01:23:21,540 INFO L203 MainTranslator]: Completed pre-run [2021-05-22 01:23:21,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-22 01:23:21,560 INFO L208 MainTranslator]: Completed translation [2021-05-22 01:23:21,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:21 WrapperNode [2021-05-22 01:23:21,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-22 01:23:21,563 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-22 01:23:21,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-22 01:23:21,564 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-22 01:23:21,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:21" (1/1) ... [2021-05-22 01:23:21,573 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:21" (1/1) ... [2021-05-22 01:23:21,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-22 01:23:21,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-22 01:23:21,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-22 01:23:21,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-22 01:23:21,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:21" (1/1) ... [2021-05-22 01:23:21,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:21" (1/1) ... [2021-05-22 01:23:21,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:21" (1/1) ... [2021-05-22 01:23:21,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:21" (1/1) ... [2021-05-22 01:23:21,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:21" (1/1) ... [2021-05-22 01:23:21,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:21" (1/1) ... [2021-05-22 01:23:21,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:21" (1/1) ... [2021-05-22 01:23:21,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-22 01:23:21,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-22 01:23:21,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-22 01:23:21,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-22 01:23:21,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:21" (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 [2021-05-22 01:23:21,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-05-22 01:23:21,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-22 01:23:21,655 INFO L130 BoogieDeclarations]: Found specification of procedure increment [2021-05-22 01:23:21,656 INFO L138 BoogieDeclarations]: Found implementation of procedure increment [2021-05-22 01:23:21,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-22 01:23:21,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-22 01:23:21,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-22 01:23:21,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-05-22 01:23:21,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-22 01:23:21,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-22 01:23:21,658 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-22 01:23:21,913 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-22 01:23:21,913 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-05-22 01:23:21,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.05 01:23:21 BoogieIcfgContainer [2021-05-22 01:23:21,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-22 01:23:21,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-22 01:23:21,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-22 01:23:21,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-22 01:23:21,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.05 01:23:21" (1/3) ... [2021-05-22 01:23:21,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f636aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.05 01:23:21, skipping insertion in model container [2021-05-22 01:23:21,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 01:23:21" (2/3) ... [2021-05-22 01:23:21,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f636aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.05 01:23:21, skipping insertion in model container [2021-05-22 01:23:21,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.05 01:23:21" (3/3) ... [2021-05-22 01:23:21,919 INFO L111 eAbstractionObserver]: Analyzing ICFG join_correct.c [2021-05-22 01:23:21,923 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-22 01:23:21,923 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-22 01:23:21,923 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-22 01:23:21,923 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-22 01:23:21,945 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:21,945 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:21,946 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:21,946 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:21,946 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:21,946 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:21,946 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:21,946 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:21,947 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:21,947 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:21,947 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:21,947 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:21,947 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:21,947 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:21,947 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:21,948 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:21,949 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:21,950 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:21,950 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:21,950 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:21,969 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-05-22 01:23:21,983 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-22 01:23:21,995 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 01:23:21,995 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 01:23:21,995 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 01:23:21,996 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 01:23:21,996 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 01:23:21,996 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 01:23:21,996 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 01:23:21,996 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-22 01:23:22,002 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 38 transitions, 84 flow [2021-05-22 01:23:22,011 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 84 states, 80 states have (on average 1.5875) internal successors, (127), 83 states have internal predecessors, (127), 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) [2021-05-22 01:23:22,013 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 80 states have (on average 1.5875) internal successors, (127), 83 states have internal predecessors, (127), 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) [2021-05-22 01:23:22,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-22 01:23:22,018 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:23:22,018 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:23:22,019 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:23:22,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:23:22,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1806410254, now seen corresponding path program 1 times [2021-05-22 01:23:22,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:23:22,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059595147] [2021-05-22 01:23:22,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:23:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:23:22,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-22 01:23:22,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:23:22,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059595147] [2021-05-22 01:23:22,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059595147] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:23:22,153 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:23:22,153 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-22 01:23:22,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628097846] [2021-05-22 01:23:22,156 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-05-22 01:23:22,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:23:22,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-05-22 01:23:22,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-05-22 01:23:22,168 INFO L87 Difference]: Start difference. First operand has 84 states, 80 states have (on average 1.5875) internal successors, (127), 83 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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) [2021-05-22 01:23:22,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:23:22,181 INFO L93 Difference]: Finished difference Result 84 states and 122 transitions. [2021-05-22 01:23:22,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-22 01:23:22,182 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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 28 [2021-05-22 01:23:22,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:23:22,188 INFO L225 Difference]: With dead ends: 84 [2021-05-22 01:23:22,188 INFO L226 Difference]: Without dead ends: 53 [2021-05-22 01:23:22,190 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-05-22 01:23:22,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-05-22 01:23:22,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-05-22 01:23:22,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 52 states have internal predecessors, (76), 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) [2021-05-22 01:23:22,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 76 transitions. [2021-05-22 01:23:22,223 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 76 transitions. Word has length 28 [2021-05-22 01:23:22,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:23:22,223 INFO L482 AbstractCegarLoop]: Abstraction has 53 states and 76 transitions. [2021-05-22 01:23:22,224 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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) [2021-05-22 01:23:22,224 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 76 transitions. [2021-05-22 01:23:22,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-22 01:23:22,225 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:23:22,226 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:23:22,226 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-22 01:23:22,227 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:23:22,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:23:22,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1044209, now seen corresponding path program 1 times [2021-05-22 01:23:22,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:23:22,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13331084] [2021-05-22 01:23:22,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:23:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:23:22,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:23:22,313 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:23:22,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13331084] [2021-05-22 01:23:22,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13331084] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:23:22,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337404592] [2021-05-22 01:23:22,313 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 [2021-05-22 01:23:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:23:22,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-22 01:23:22,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 01:23:22,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:23:22,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337404592] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:23:22,543 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 01:23:22,544 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-05-22 01:23:22,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687821341] [2021-05-22 01:23:22,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-22 01:23:22,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:23:22,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-22 01:23:22,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-05-22 01:23:22,546 INFO L87 Difference]: Start difference. First operand 53 states and 76 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 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) [2021-05-22 01:23:22,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:23:22,599 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2021-05-22 01:23:22,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-22 01:23:22,600 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 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 28 [2021-05-22 01:23:22,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:23:22,600 INFO L225 Difference]: With dead ends: 35 [2021-05-22 01:23:22,600 INFO L226 Difference]: Without dead ends: 0 [2021-05-22 01:23:22,601 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 52.6ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:23:22,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-22 01:23:22,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-22 01:23:22,601 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) [2021-05-22 01:23:22,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-22 01:23:22,602 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-05-22 01:23:22,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:23:22,602 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-22 01:23:22,602 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 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) [2021-05-22 01:23:22,602 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-22 01:23:22,602 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-22 01:23:22,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-22 01:23:22,817 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-05-22 01:23:22,818 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-22 01:23:22,819 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 01:23:22,819 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 01:23:22,819 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 01:23:22,819 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 01:23:22,819 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 01:23:22,819 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 01:23:22,819 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 01:23:22,819 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-22 01:23:22,820 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 38 transitions, 84 flow [2021-05-22 01:23:22,827 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 84 states, 80 states have (on average 1.5875) internal successors, (127), 83 states have internal predecessors, (127), 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) [2021-05-22 01:23:22,828 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 80 states have (on average 1.5875) internal successors, (127), 83 states have internal predecessors, (127), 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) [2021-05-22 01:23:22,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-22 01:23:22,828 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:23:22,828 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:23:22,829 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-22 01:23:22,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:23:22,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1623463023, now seen corresponding path program 1 times [2021-05-22 01:23:22,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:23:22,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105952877] [2021-05-22 01:23:22,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:23:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-22 01:23:22,847 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-22 01:23:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-22 01:23:22,857 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-22 01:23:22,869 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-22 01:23:22,870 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-05-22 01:23:22,870 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-22 01:23:22,870 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-05-22 01:23:22,870 WARN L242 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-05-22 01:23:22,870 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-05-22 01:23:22,877 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,878 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,878 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,878 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,878 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,878 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,878 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,878 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,878 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,878 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,878 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,879 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,879 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,879 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,879 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,879 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,879 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,879 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,879 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,879 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,879 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,879 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,879 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,880 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,880 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,880 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,880 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,880 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,880 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,880 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,880 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,880 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,881 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,881 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,881 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,881 WARN L313 ript$VariableManager]: TermVariabe |incrementThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,883 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,883 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,883 WARN L313 ript$VariableManager]: TermVariabe incrementThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,883 WARN L313 ript$VariableManager]: TermVariabe |incrementThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 01:23:22,889 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-05-22 01:23:22,889 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-22 01:23:22,890 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 01:23:22,890 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 01:23:22,890 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 01:23:22,890 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 01:23:22,890 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 01:23:22,890 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 01:23:22,890 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 01:23:22,891 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-22 01:23:22,892 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 43 transitions, 104 flow [2021-05-22 01:23:22,905 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 416 states, 408 states have (on average 2.156862745098039) internal successors, (880), 415 states have internal predecessors, (880), 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) [2021-05-22 01:23:22,906 INFO L276 IsEmpty]: Start isEmpty. Operand has 416 states, 408 states have (on average 2.156862745098039) internal successors, (880), 415 states have internal predecessors, (880), 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) [2021-05-22 01:23:22,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-22 01:23:22,909 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:23:22,909 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:23:22,909 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:23:22,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:23:22,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1533845642, now seen corresponding path program 1 times [2021-05-22 01:23:22,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:23:22,910 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968991975] [2021-05-22 01:23:22,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:23:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:23:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-22 01:23:22,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:23:22,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968991975] [2021-05-22 01:23:22,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968991975] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:23:22,927 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:23:22,927 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-22 01:23:22,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959371062] [2021-05-22 01:23:22,927 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-05-22 01:23:22,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:23:22,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-05-22 01:23:22,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-05-22 01:23:22,928 INFO L87 Difference]: Start difference. First operand has 416 states, 408 states have (on average 2.156862745098039) internal successors, (880), 415 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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) [2021-05-22 01:23:22,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:23:22,938 INFO L93 Difference]: Finished difference Result 416 states and 859 transitions. [2021-05-22 01:23:22,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-22 01:23:22,938 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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 28 [2021-05-22 01:23:22,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:23:22,941 INFO L225 Difference]: With dead ends: 416 [2021-05-22 01:23:22,941 INFO L226 Difference]: Without dead ends: 261 [2021-05-22 01:23:22,941 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-05-22 01:23:22,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-05-22 01:23:22,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2021-05-22 01:23:22,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 258 states have (on average 2.0775193798449614) internal successors, (536), 260 states have internal predecessors, (536), 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) [2021-05-22 01:23:22,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 536 transitions. [2021-05-22 01:23:22,963 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 536 transitions. Word has length 28 [2021-05-22 01:23:22,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:23:22,963 INFO L482 AbstractCegarLoop]: Abstraction has 261 states and 536 transitions. [2021-05-22 01:23:22,964 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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) [2021-05-22 01:23:22,964 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 536 transitions. [2021-05-22 01:23:22,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-22 01:23:22,965 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:23:22,965 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:23:22,965 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-22 01:23:22,965 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:23:22,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:23:22,965 INFO L82 PathProgramCache]: Analyzing trace with hash -273608821, now seen corresponding path program 1 times [2021-05-22 01:23:22,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:23:22,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721025035] [2021-05-22 01:23:22,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:23:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:23:23,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:23:23,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:23:23,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721025035] [2021-05-22 01:23:23,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721025035] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:23:23,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078885866] [2021-05-22 01:23:23,002 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 [2021-05-22 01:23:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:23:23,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-22 01:23:23,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 01:23:23,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:23:23,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078885866] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:23:23,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 01:23:23,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-05-22 01:23:23,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781512780] [2021-05-22 01:23:23,137 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-22 01:23:23,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:23:23,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-22 01:23:23,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-05-22 01:23:23,138 INFO L87 Difference]: Start difference. First operand 261 states and 536 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 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) [2021-05-22 01:23:23,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:23:23,227 INFO L93 Difference]: Finished difference Result 243 states and 509 transitions. [2021-05-22 01:23:23,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-22 01:23:23,231 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 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 28 [2021-05-22 01:23:23,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:23:23,233 INFO L225 Difference]: With dead ends: 243 [2021-05-22 01:23:23,233 INFO L226 Difference]: Without dead ends: 243 [2021-05-22 01:23:23,233 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 42.7ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:23:23,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-05-22 01:23:23,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2021-05-22 01:23:23,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 241 states have (on average 2.112033195020747) internal successors, (509), 242 states have internal predecessors, (509), 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) [2021-05-22 01:23:23,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 509 transitions. [2021-05-22 01:23:23,250 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 509 transitions. Word has length 28 [2021-05-22 01:23:23,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:23:23,250 INFO L482 AbstractCegarLoop]: Abstraction has 243 states and 509 transitions. [2021-05-22 01:23:23,250 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 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) [2021-05-22 01:23:23,250 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 509 transitions. [2021-05-22 01:23:23,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-05-22 01:23:23,252 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:23:23,252 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:23:23,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 01:23:23,457 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:23:23,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:23:23,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1144972007, now seen corresponding path program 1 times [2021-05-22 01:23:23,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:23:23,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461770615] [2021-05-22 01:23:23,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:23:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:23:23,666 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-22 01:23:23,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:23:23,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461770615] [2021-05-22 01:23:23,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461770615] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 01:23:23,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991775007] [2021-05-22 01:23:23,667 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 [2021-05-22 01:23:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:23:23,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-22 01:23:23,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 01:23:23,919 WARN L348 FreeRefinementEngine]: Global settings require throwing the following exception [2021-05-22 01:23:24,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 01:23:24,129 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.EqualityInformation.getEqinfo(EqualityInformation.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.XnfDer.derSimple(XnfDer.java:308) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.XnfDer.tryToEliminate_EqInfoBased(XnfDer.java:138) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.XnfDer.tryToEliminate(XnfDer.java:101) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:100) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:374) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:69) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:63) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:371) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-05-22 01:23:24,132 INFO L168 Benchmark]: Toolchain (without parser) took 2754.53 ms. Allocated memory is still 356.5 MB. Free memory was 318.3 MB in the beginning and 156.0 MB in the end (delta: 162.3 MB). Peak memory consumption was 161.8 MB. Max. memory is 16.0 GB. [2021-05-22 01:23:24,132 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 356.5 MB. Free memory is still 336.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-05-22 01:23:24,132 INFO L168 Benchmark]: CACSL2BoogieTranslator took 183.84 ms. Allocated memory is still 356.5 MB. Free memory was 318.0 MB in the beginning and 338.4 MB in the end (delta: -20.4 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. [2021-05-22 01:23:24,132 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.73 ms. Allocated memory is still 356.5 MB. Free memory was 338.4 MB in the beginning and 337.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-22 01:23:24,132 INFO L168 Benchmark]: Boogie Preprocessor took 25.53 ms. Allocated memory is still 356.5 MB. Free memory was 337.4 MB in the beginning and 336.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-22 01:23:24,132 INFO L168 Benchmark]: RCFGBuilder took 301.81 ms. Allocated memory is still 356.5 MB. Free memory was 336.3 MB in the beginning and 318.5 MB in the end (delta: 17.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-05-22 01:23:24,132 INFO L168 Benchmark]: TraceAbstraction took 2216.18 ms. Allocated memory is still 356.5 MB. Free memory was 318.5 MB in the beginning and 156.0 MB in the end (delta: 162.5 MB). Peak memory consumption was 163.6 MB. Max. memory is 16.0 GB. [2021-05-22 01:23:24,133 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 356.5 MB. Free memory is still 336.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 183.84 ms. Allocated memory is still 356.5 MB. Free memory was 318.0 MB in the beginning and 338.4 MB in the end (delta: -20.4 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.73 ms. Allocated memory is still 356.5 MB. Free memory was 338.4 MB in the beginning and 337.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 25.53 ms. Allocated memory is still 356.5 MB. Free memory was 337.4 MB in the beginning and 336.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 301.81 ms. Allocated memory is still 356.5 MB. Free memory was 336.3 MB in the beginning and 318.5 MB in the end (delta: 17.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2216.18 ms. Allocated memory is still 356.5 MB. Free memory was 318.5 MB in the beginning and 156.0 MB in the end (delta: 162.5 MB). Peak memory consumption was 163.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.EqualityInformation.getEqinfo(EqualityInformation.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...