/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 18:14:51,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 18:14:51,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 18:14:51,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 18:14:51,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 18:14:51,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 18:14:51,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 18:14:51,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 18:14:51,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 18:14:51,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 18:14:51,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 18:14:51,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 18:14:51,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 18:14:51,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 18:14:51,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 18:14:51,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 18:14:51,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 18:14:51,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 18:14:51,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 18:14:51,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 18:14:51,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 18:14:51,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 18:14:51,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 18:14:51,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 18:14:51,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-11 18:14:51,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 18:14:51,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 18:14:51,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 18:14:51,972 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 18:14:51,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 18:14:51,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 18:14:51,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 18:14:51,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 18:14:51,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 18:14:51,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 18:14:51,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 18:14:51,977 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.epf [2020-11-11 18:14:52,033 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 18:14:52,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 18:14:52,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 18:14:52,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 18:14:52,038 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 18:14:52,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 18:14:52,038 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 18:14:52,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 18:14:52,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 18:14:52,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 18:14:52,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 18:14:52,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 18:14:52,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 18:14:52,041 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 18:14:52,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 18:14:52,041 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 18:14:52,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 18:14:52,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 18:14:52,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 18:14:52,042 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 18:14:52,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 18:14:52,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 18:14:52,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 18:14:52,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 18:14:52,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 18:14:52,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 18:14:52,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 18:14:52,044 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-11 18:14:52,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 18:14:52,044 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 18:14:52,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 18:14:52,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 18:14:52,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 18:14:52,454 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 18:14:52,455 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 18:14:52,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.opt.i [2020-11-11 18:14:52,539 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d23a51a46/b4b672d32e4d4c868502af223ed0206e/FLAG37291b20a [2020-11-11 18:14:53,278 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 18:14:53,278 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_pso.opt.i [2020-11-11 18:14:53,299 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d23a51a46/b4b672d32e4d4c868502af223ed0206e/FLAG37291b20a [2020-11-11 18:14:53,513 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d23a51a46/b4b672d32e4d4c868502af223ed0206e [2020-11-11 18:14:53,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 18:14:53,523 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 18:14:53,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 18:14:53,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 18:14:53,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 18:14:53,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:14:53" (1/1) ... [2020-11-11 18:14:53,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cfa08b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:14:53, skipping insertion in model container [2020-11-11 18:14:53,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:14:53" (1/1) ... [2020-11-11 18:14:53,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 18:14:53,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 18:14:53,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:14:53,976 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 18:14:54,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 18:14:54,107 INFO L208 MainTranslator]: Completed translation [2020-11-11 18:14:54,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:14:54 WrapperNode [2020-11-11 18:14:54,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 18:14:54,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 18:14:54,109 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 18:14:54,109 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 18:14:54,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:14:54" (1/1) ... [2020-11-11 18:14:54,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:14:54" (1/1) ... [2020-11-11 18:14:54,157 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 18:14:54,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 18:14:54,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 18:14:54,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 18:14:54,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:14:54" (1/1) ... [2020-11-11 18:14:54,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:14:54" (1/1) ... [2020-11-11 18:14:54,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:14:54" (1/1) ... [2020-11-11 18:14:54,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:14:54" (1/1) ... [2020-11-11 18:14:54,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:14:54" (1/1) ... [2020-11-11 18:14:54,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:14:54" (1/1) ... [2020-11-11 18:14:54,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:14:54" (1/1) ... [2020-11-11 18:14:54,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 18:14:54,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 18:14:54,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 18:14:54,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 18:14:54,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:14:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 18:14:54,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 18:14:54,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 18:14:54,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 18:14:54,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 18:14:54,290 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-11 18:14:54,291 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-11 18:14:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-11 18:14:54,293 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-11 18:14:54,293 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-11 18:14:54,294 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-11 18:14:54,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 18:14:54,295 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 18:14:54,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 18:14:54,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 18:14:54,297 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-11 18:14:54,839 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 18:14:54,840 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-11 18:14:54,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:14:54 BoogieIcfgContainer [2020-11-11 18:14:54,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 18:14:54,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 18:14:54,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 18:14:54,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 18:14:54,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 06:14:53" (1/3) ... [2020-11-11 18:14:54,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7982a7c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:14:54, skipping insertion in model container [2020-11-11 18:14:54,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:14:54" (2/3) ... [2020-11-11 18:14:54,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7982a7c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:14:54, skipping insertion in model container [2020-11-11 18:14:54,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:14:54" (3/3) ... [2020-11-11 18:14:54,854 INFO L111 eAbstractionObserver]: Analyzing ICFG safe028_pso.opt.i [2020-11-11 18:14:54,875 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 18:14:54,875 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 18:14:54,879 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-11 18:14:54,880 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 18:14:54,919 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,919 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,920 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,920 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,920 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,920 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,920 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,921 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,921 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,921 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,921 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,922 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,923 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,923 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,923 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,923 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,923 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,924 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,924 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,924 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,924 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,924 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,925 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,925 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,925 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,925 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,926 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,926 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,928 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,928 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,928 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,929 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,930 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,930 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,930 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,931 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,940 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,940 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,940 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,940 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,945 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,945 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,946 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,946 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,949 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,949 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,949 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,949 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 18:14:54,952 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 18:14:54,965 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 18:14:55,001 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 18:14:55,002 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 18:14:55,002 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 18:14:55,002 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 18:14:55,002 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 18:14:55,002 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 18:14:55,002 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 18:14:55,002 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 18:14:55,017 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 171 flow [2020-11-11 18:14:55,655 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8448 states, 8446 states have (on average 3.5893914278948613) internal successors, (30316), 8447 states have internal predecessors, (30316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:14:55,692 INFO L276 IsEmpty]: Start isEmpty. Operand has 8448 states, 8446 states have (on average 3.5893914278948613) internal successors, (30316), 8447 states have internal predecessors, (30316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:14:55,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-11 18:14:55,729 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:14:55,730 INFO L494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:14:55,731 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:14:55,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:14:55,737 INFO L82 PathProgramCache]: Analyzing trace with hash 122866376, now seen corresponding path program 1 times [2020-11-11 18:14:55,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:14:55,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824987757] [2020-11-11 18:14:55,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:14:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:14:56,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:14:56,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824987757] [2020-11-11 18:14:56,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:14:56,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:14:56,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995710075] [2020-11-11 18:14:56,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:14:56,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:14:56,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:14:56,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:14:56,228 INFO L87 Difference]: Start difference. First operand has 8448 states, 8446 states have (on average 3.5893914278948613) internal successors, (30316), 8447 states have internal predecessors, (30316), 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 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:14:56,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:14:56,619 INFO L93 Difference]: Finished difference Result 10464 states and 36160 transitions. [2020-11-11 18:14:56,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:14:56,621 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 42 [2020-11-11 18:14:56,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:14:56,677 INFO L225 Difference]: With dead ends: 10464 [2020-11-11 18:14:56,677 INFO L226 Difference]: Without dead ends: 3954 [2020-11-11 18:14:56,679 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:14:56,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2020-11-11 18:14:56,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 3954. [2020-11-11 18:14:56,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3954 states, 3953 states have (on average 3.3885656463445484) internal successors, (13395), 3953 states have internal predecessors, (13395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:14:56,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3954 states to 3954 states and 13395 transitions. [2020-11-11 18:14:56,992 INFO L78 Accepts]: Start accepts. Automaton has 3954 states and 13395 transitions. Word has length 42 [2020-11-11 18:14:56,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:14:56,994 INFO L481 AbstractCegarLoop]: Abstraction has 3954 states and 13395 transitions. [2020-11-11 18:14:56,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:14:56,994 INFO L276 IsEmpty]: Start isEmpty. Operand 3954 states and 13395 transitions. [2020-11-11 18:14:57,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-11 18:14:57,005 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:14:57,005 INFO L494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:14:57,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 18:14:57,006 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:14:57,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:14:57,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1872350423, now seen corresponding path program 1 times [2020-11-11 18:14:57,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:14:57,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648074016] [2020-11-11 18:14:57,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:14:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:14:57,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:14:57,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648074016] [2020-11-11 18:14:57,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:14:57,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:14:57,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454310007] [2020-11-11 18:14:57,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:14:57,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:14:57,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:14:57,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:14:57,300 INFO L87 Difference]: Start difference. First operand 3954 states and 13395 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:14:57,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:14:57,553 INFO L93 Difference]: Finished difference Result 5214 states and 17478 transitions. [2020-11-11 18:14:57,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:14:57,554 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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 44 [2020-11-11 18:14:57,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:14:57,579 INFO L225 Difference]: With dead ends: 5214 [2020-11-11 18:14:57,580 INFO L226 Difference]: Without dead ends: 2904 [2020-11-11 18:14:57,580 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-11 18:14:57,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2020-11-11 18:14:57,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 2904. [2020-11-11 18:14:57,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2904 states, 2903 states have (on average 3.281777471581123) internal successors, (9527), 2903 states have internal predecessors, (9527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:14:57,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2904 states to 2904 states and 9527 transitions. [2020-11-11 18:14:57,764 INFO L78 Accepts]: Start accepts. Automaton has 2904 states and 9527 transitions. Word has length 44 [2020-11-11 18:14:57,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:14:57,766 INFO L481 AbstractCegarLoop]: Abstraction has 2904 states and 9527 transitions. [2020-11-11 18:14:57,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:14:57,767 INFO L276 IsEmpty]: Start isEmpty. Operand 2904 states and 9527 transitions. [2020-11-11 18:14:57,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-11 18:14:57,778 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:14:57,778 INFO L494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:14:57,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 18:14:57,779 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:14:57,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:14:57,780 INFO L82 PathProgramCache]: Analyzing trace with hash 799772232, now seen corresponding path program 1 times [2020-11-11 18:14:57,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:14:57,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867423975] [2020-11-11 18:14:57,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:14:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:14:57,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:14:57,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867423975] [2020-11-11 18:14:57,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:14:57,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-11 18:14:57,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627493447] [2020-11-11 18:14:57,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 18:14:57,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:14:57,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 18:14:57,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-11 18:14:57,925 INFO L87 Difference]: Start difference. First operand 2904 states and 9527 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:14:58,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:14:58,079 INFO L93 Difference]: Finished difference Result 3576 states and 11571 transitions. [2020-11-11 18:14:58,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-11 18:14:58,079 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 46 [2020-11-11 18:14:58,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:14:58,101 INFO L225 Difference]: With dead ends: 3576 [2020-11-11 18:14:58,102 INFO L226 Difference]: Without dead ends: 2680 [2020-11-11 18:14:58,102 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:14:58,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2020-11-11 18:14:58,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 2680. [2020-11-11 18:14:58,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2680 states, 2679 states have (on average 3.23665546845838) internal successors, (8671), 2679 states have internal predecessors, (8671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:14:58,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 8671 transitions. [2020-11-11 18:14:58,203 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 8671 transitions. Word has length 46 [2020-11-11 18:14:58,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:14:58,203 INFO L481 AbstractCegarLoop]: Abstraction has 2680 states and 8671 transitions. [2020-11-11 18:14:58,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:14:58,204 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 8671 transitions. [2020-11-11 18:14:58,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-11 18:14:58,211 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:14:58,211 INFO L494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:14:58,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 18:14:58,211 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:14:58,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:14:58,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1590494414, now seen corresponding path program 1 times [2020-11-11 18:14:58,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:14:58,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938568901] [2020-11-11 18:14:58,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:14:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:14:58,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:14:58,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938568901] [2020-11-11 18:14:58,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:14:58,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:14:58,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148899051] [2020-11-11 18:14:58,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:14:58,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:14:58,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:14:58,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:14:58,366 INFO L87 Difference]: Start difference. First operand 2680 states and 8671 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) [2020-11-11 18:14:58,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:14:58,564 INFO L93 Difference]: Finished difference Result 2692 states and 8433 transitions. [2020-11-11 18:14:58,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-11 18:14:58,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) Word has length 47 [2020-11-11 18:14:58,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:14:58,581 INFO L225 Difference]: With dead ends: 2692 [2020-11-11 18:14:58,581 INFO L226 Difference]: Without dead ends: 1924 [2020-11-11 18:14:58,582 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-11 18:14:58,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2020-11-11 18:14:58,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1924. [2020-11-11 18:14:58,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1923 states have (on average 3.0832033281331253) internal successors, (5929), 1923 states have internal predecessors, (5929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:14:58,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 5929 transitions. [2020-11-11 18:14:58,652 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 5929 transitions. Word has length 47 [2020-11-11 18:14:58,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:14:58,653 INFO L481 AbstractCegarLoop]: Abstraction has 1924 states and 5929 transitions. [2020-11-11 18:14:58,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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) [2020-11-11 18:14:58,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 5929 transitions. [2020-11-11 18:14:58,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-11 18:14:58,658 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:14:58,658 INFO L494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 18:14:58,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 18:14:58,659 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:14:58,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:14:58,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1762956271, now seen corresponding path program 1 times [2020-11-11 18:14:58,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:14:58,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217554567] [2020-11-11 18:14:58,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:14:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:14:58,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:14:58,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217554567] [2020-11-11 18:14:58,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:14:58,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-11 18:14:58,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285230020] [2020-11-11 18:14:58,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-11 18:14:58,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:14:58,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-11 18:14:58,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-11 18:14:58,803 INFO L87 Difference]: Start difference. First operand 1924 states and 5929 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:14:58,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:14:58,980 INFO L93 Difference]: Finished difference Result 1447 states and 4276 transitions. [2020-11-11 18:14:58,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-11 18:14:58,981 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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 49 [2020-11-11 18:14:58,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:14:58,989 INFO L225 Difference]: With dead ends: 1447 [2020-11-11 18:14:58,989 INFO L226 Difference]: Without dead ends: 1015 [2020-11-11 18:14:58,990 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-11 18:14:58,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-11-11 18:14:59,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 1015. [2020-11-11 18:14:59,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 1014 states have (on average 2.858974358974359) internal successors, (2899), 1014 states have internal predecessors, (2899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:14:59,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 2899 transitions. [2020-11-11 18:14:59,021 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 2899 transitions. Word has length 49 [2020-11-11 18:14:59,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:14:59,023 INFO L481 AbstractCegarLoop]: Abstraction has 1015 states and 2899 transitions. [2020-11-11 18:14:59,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:14:59,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 2899 transitions. [2020-11-11 18:14:59,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-11 18:14:59,028 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:14:59,028 INFO L494 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, 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] [2020-11-11 18:14:59,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 18:14:59,029 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:14:59,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:14:59,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1204892077, now seen corresponding path program 1 times [2020-11-11 18:14:59,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:14:59,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494907668] [2020-11-11 18:14:59,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:14:59,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:14:59,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:14:59,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494907668] [2020-11-11 18:14:59,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:14:59,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:14:59,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784045492] [2020-11-11 18:14:59,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:14:59,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:14:59,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:14:59,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:14:59,215 INFO L87 Difference]: Start difference. First operand 1015 states and 2899 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:14:59,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:14:59,315 INFO L93 Difference]: Finished difference Result 1418 states and 4076 transitions. [2020-11-11 18:14:59,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 18:14:59,316 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 53 [2020-11-11 18:14:59,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:14:59,321 INFO L225 Difference]: With dead ends: 1418 [2020-11-11 18:14:59,321 INFO L226 Difference]: Without dead ends: 715 [2020-11-11 18:14:59,322 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:14:59,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2020-11-11 18:14:59,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 715. [2020-11-11 18:14:59,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 714 states have (on average 2.8137254901960786) internal successors, (2009), 714 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:14:59,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 2009 transitions. [2020-11-11 18:14:59,343 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 2009 transitions. Word has length 53 [2020-11-11 18:14:59,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:14:59,343 INFO L481 AbstractCegarLoop]: Abstraction has 715 states and 2009 transitions. [2020-11-11 18:14:59,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:14:59,344 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 2009 transitions. [2020-11-11 18:14:59,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-11 18:14:59,346 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 18:14:59,346 INFO L494 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, 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] [2020-11-11 18:14:59,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-11 18:14:59,346 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 18:14:59,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 18:14:59,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1710619263, now seen corresponding path program 2 times [2020-11-11 18:14:59,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 18:14:59,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086938004] [2020-11-11 18:14:59,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 18:14:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 18:14:59,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-11 18:14:59,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086938004] [2020-11-11 18:14:59,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 18:14:59,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-11 18:14:59,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225444853] [2020-11-11 18:14:59,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-11 18:14:59,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 18:14:59,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-11 18:14:59,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-11 18:14:59,448 INFO L87 Difference]: Start difference. First operand 715 states and 2009 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:14:59,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 18:14:59,551 INFO L93 Difference]: Finished difference Result 607 states and 1685 transitions. [2020-11-11 18:14:59,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 18:14:59,551 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 53 [2020-11-11 18:14:59,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 18:14:59,552 INFO L225 Difference]: With dead ends: 607 [2020-11-11 18:14:59,552 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 18:14:59,552 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-11 18:14:59,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 18:14:59,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 18:14:59,553 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) [2020-11-11 18:14:59,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 18:14:59,553 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2020-11-11 18:14:59,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 18:14:59,554 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 18:14:59,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 18:14:59,554 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 18:14:59,554 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 18:14:59,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-11 18:14:59,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 06:14:59 BasicIcfg [2020-11-11 18:14:59,559 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 18:14:59,562 INFO L168 Benchmark]: Toolchain (without parser) took 6042.94 ms. Allocated memory was 302.0 MB in the beginning and 616.6 MB in the end (delta: 314.6 MB). Free memory was 277.5 MB in the beginning and 553.6 MB in the end (delta: -276.1 MB). Peak memory consumption was 39.6 MB. Max. memory is 16.0 GB. [2020-11-11 18:14:59,562 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 302.0 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 18:14:59,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 583.78 ms. Allocated memory is still 302.0 MB. Free memory was 276.8 MB in the beginning and 246.1 MB in the end (delta: 30.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2020-11-11 18:14:59,564 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.25 ms. Allocated memory is still 302.0 MB. Free memory was 246.0 MB in the beginning and 244.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:14:59,565 INFO L168 Benchmark]: Boogie Preprocessor took 29.03 ms. Allocated memory is still 302.0 MB. Free memory was 244.1 MB in the beginning and 242.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 18:14:59,566 INFO L168 Benchmark]: RCFGBuilder took 653.45 ms. Allocated memory is still 302.0 MB. Free memory was 242.7 MB in the beginning and 264.6 MB in the end (delta: -22.0 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. [2020-11-11 18:14:59,566 INFO L168 Benchmark]: TraceAbstraction took 4712.66 ms. Allocated memory was 302.0 MB in the beginning and 616.6 MB in the end (delta: 314.6 MB). Free memory was 264.6 MB in the beginning and 553.6 MB in the end (delta: -289.0 MB). Peak memory consumption was 24.5 MB. Max. memory is 16.0 GB. [2020-11-11 18:14:59,570 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 302.0 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 583.78 ms. Allocated memory is still 302.0 MB. Free memory was 276.8 MB in the beginning and 246.1 MB in the end (delta: 30.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 48.25 ms. Allocated memory is still 302.0 MB. Free memory was 246.0 MB in the beginning and 244.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.03 ms. Allocated memory is still 302.0 MB. Free memory was 244.1 MB in the beginning and 242.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 653.45 ms. Allocated memory is still 302.0 MB. Free memory was 242.7 MB in the beginning and 264.6 MB in the end (delta: -22.0 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4712.66 ms. Allocated memory was 302.0 MB in the beginning and 616.6 MB in the end (delta: 314.6 MB). Free memory was 264.6 MB in the beginning and 553.6 MB in the end (delta: -289.0 MB). Peak memory consumption was 24.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.6s, HoareTripleCheckerStatistics: 635 SDtfs, 949 SDslu, 2154 SDs, 0 SdLazy, 273 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8448occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 334 NumberOfCodeBlocks, 334 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 327 ConstructedInterpolants, 0 QuantifiedInterpolants, 41295 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...