/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-11 23:42:42,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-11 23:42:42,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-11 23:42:42,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-11 23:42:42,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-11 23:42:42,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-11 23:42:42,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-11 23:42:42,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-11 23:42:42,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-11 23:42:42,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-11 23:42:42,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-11 23:42:42,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-11 23:42:42,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-11 23:42:42,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-11 23:42:42,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-11 23:42:42,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-11 23:42:42,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-11 23:42:42,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-11 23:42:42,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-11 23:42:42,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-11 23:42:42,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-11 23:42:42,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-11 23:42:42,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-11 23:42:42,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-11 23:42:42,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-11 23:42:42,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-11 23:42:42,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-11 23:42:42,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-11 23:42:42,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-11 23:42:42,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-11 23:42:42,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-11 23:42:42,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-11 23:42:42,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-11 23:42:42,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-11 23:42:42,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-11 23:42:42,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-11 23:42:42,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-11 23:42:42,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-11 23:42:42,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-11 23:42:42,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-11 23:42:42,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-11 23:42:42,772 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-11-11 23:42:42,827 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-11 23:42:42,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-11 23:42:42,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-11 23:42:42,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-11 23:42:42,832 INFO L138 SettingsManager]: * Use SBE=true [2020-11-11 23:42:42,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-11 23:42:42,832 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-11 23:42:42,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-11 23:42:42,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-11 23:42:42,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-11 23:42:42,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-11 23:42:42,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-11 23:42:42,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-11 23:42:42,834 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-11 23:42:42,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-11 23:42:42,834 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-11 23:42:42,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-11 23:42:42,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-11 23:42:42,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-11 23:42:42,835 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-11 23:42:42,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-11 23:42:42,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-11 23:42:42,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-11 23:42:42,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-11 23:42:42,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-11 23:42:42,836 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-11 23:42:42,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-11 23:42:42,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-11 23:42:42,837 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-11 23:42:43,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-11 23:42:43,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-11 23:42:43,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-11 23:42:43,269 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-11 23:42:43,269 INFO L275 PluginConnector]: CDTParser initialized [2020-11-11 23:42:43,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2020-11-11 23:42:43,359 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f24e206bb/20dc421d2b704400868616b5d8d820c5/FLAG4c8094dbf [2020-11-11 23:42:43,970 INFO L306 CDTParser]: Found 1 translation units. [2020-11-11 23:42:43,970 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.opt.i [2020-11-11 23:42:43,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f24e206bb/20dc421d2b704400868616b5d8d820c5/FLAG4c8094dbf [2020-11-11 23:42:44,269 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f24e206bb/20dc421d2b704400868616b5d8d820c5 [2020-11-11 23:42:44,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-11 23:42:44,279 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-11 23:42:44,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-11 23:42:44,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-11 23:42:44,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-11 23:42:44,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:42:44" (1/1) ... [2020-11-11 23:42:44,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@781eac99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:42:44, skipping insertion in model container [2020-11-11 23:42:44,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:42:44" (1/1) ... [2020-11-11 23:42:44,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-11 23:42:44,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-11 23:42:44,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 23:42:44,753 INFO L203 MainTranslator]: Completed pre-run [2020-11-11 23:42:44,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-11 23:42:44,915 INFO L208 MainTranslator]: Completed translation [2020-11-11 23:42:44,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:42:44 WrapperNode [2020-11-11 23:42:44,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-11 23:42:44,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-11 23:42:44,917 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-11 23:42:44,917 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-11 23:42:44,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:42:44" (1/1) ... [2020-11-11 23:42:44,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:42:44" (1/1) ... [2020-11-11 23:42:44,972 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-11 23:42:44,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-11 23:42:44,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-11 23:42:44,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-11 23:42:44,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:42:44" (1/1) ... [2020-11-11 23:42:44,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:42:44" (1/1) ... [2020-11-11 23:42:44,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:42:44" (1/1) ... [2020-11-11 23:42:44,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:42:44" (1/1) ... [2020-11-11 23:42:44,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:42:44" (1/1) ... [2020-11-11 23:42:44,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:42:44" (1/1) ... [2020-11-11 23:42:44,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:42:44" (1/1) ... [2020-11-11 23:42:45,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-11 23:42:45,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-11 23:42:45,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-11 23:42:45,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-11 23:42:45,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:42:44" (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 23:42:45,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-11 23:42:45,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-11 23:42:45,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-11 23:42:45,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-11 23:42:45,089 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-11 23:42:45,089 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-11 23:42:45,090 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-11 23:42:45,091 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-11 23:42:45,093 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-11 23:42:45,093 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-11 23:42:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-11 23:42:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-11 23:42:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-11 23:42:45,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-11 23:42:45,098 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 23:42:45,601 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-11 23:42:45,602 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-11 23:42:45,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:42:45 BoogieIcfgContainer [2020-11-11 23:42:45,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-11 23:42:45,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-11 23:42:45,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-11 23:42:45,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-11 23:42:45,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 11:42:44" (1/3) ... [2020-11-11 23:42:45,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e3d19a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 11:42:45, skipping insertion in model container [2020-11-11 23:42:45,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:42:44" (2/3) ... [2020-11-11 23:42:45,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e3d19a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 11:42:45, skipping insertion in model container [2020-11-11 23:42:45,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:42:45" (3/3) ... [2020-11-11 23:42:45,613 INFO L111 eAbstractionObserver]: Analyzing ICFG safe004_tso.opt.i [2020-11-11 23:42:45,629 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-11 23:42:45,629 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-11 23:42:45,633 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-11 23:42:45,634 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-11 23:42:45,669 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,670 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,670 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,670 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,671 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,671 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,671 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,671 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,672 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,672 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,672 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,672 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,673 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,673 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,673 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,673 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,673 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,674 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,674 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,674 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,674 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,675 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,675 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,675 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,675 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,676 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,676 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,676 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,676 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,676 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,677 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,677 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,677 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,677 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,678 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,678 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,680 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,681 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,681 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,681 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,691 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,691 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,692 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,692 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,694 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,695 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,695 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,695 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-11 23:42:45,697 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-11 23:42:45,710 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-11 23:42:45,734 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-11 23:42:45,734 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-11 23:42:45,734 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-11 23:42:45,734 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-11 23:42:45,734 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-11 23:42:45,735 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-11 23:42:45,735 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-11 23:42:45,735 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-11 23:42:45,747 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-11 23:42:45,749 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-11 23:42:45,753 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-11 23:42:45,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-11 23:42:45,801 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-11 23:42:45,801 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-11 23:42:45,805 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-11 23:42:45,808 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-11 23:42:48,270 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-11-11 23:42:48,427 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-11-11 23:42:48,985 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-11-11 23:42:49,264 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-11-11 23:42:49,796 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2020-11-11 23:42:50,390 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-11 23:42:50,572 INFO L131 LiptonReduction]: Checked pairs total: 3166 [2020-11-11 23:42:50,572 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-11-11 23:42:50,580 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-11-11 23:42:50,606 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 298 states, 296 states have (on average 2.918918918918919) internal successors, (864), 297 states have internal predecessors, (864), 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 23:42:50,610 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 296 states have (on average 2.918918918918919) internal successors, (864), 297 states have internal predecessors, (864), 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 23:42:50,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-11 23:42:50,617 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:42:50,618 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:42:50,618 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:42:50,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:42:50,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1742955516, now seen corresponding path program 1 times [2020-11-11 23:42:50,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:42:50,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163547536] [2020-11-11 23:42:50,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:42:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:42:50,898 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 23:42:50,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163547536] [2020-11-11 23:42:50,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:42:50,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-11 23:42:50,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070800214] [2020-11-11 23:42:50,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-11 23:42:50,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:42:50,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-11 23:42:50,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:42:50,931 INFO L87 Difference]: Start difference. First operand has 298 states, 296 states have (on average 2.918918918918919) internal successors, (864), 297 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:42:50,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:42:50,985 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-11 23:42:50,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-11 23:42:50,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2020-11-11 23:42:50,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:42:51,001 INFO L225 Difference]: With dead ends: 282 [2020-11-11 23:42:51,001 INFO L226 Difference]: Without dead ends: 218 [2020-11-11 23:42:51,003 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:42:51,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-11 23:42:51,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-11 23:42:51,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.7649769585253456) internal successors, (600), 217 states have internal predecessors, (600), 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 23:42:51,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-11-11 23:42:51,068 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-11-11 23:42:51,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:42:51,069 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-11-11 23:42:51,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:42:51,069 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-11-11 23:42:51,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-11 23:42:51,071 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:42:51,071 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:42:51,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-11 23:42:51,072 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:42:51,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:42:51,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1802974335, now seen corresponding path program 1 times [2020-11-11 23:42:51,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:42:51,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180667747] [2020-11-11 23:42:51,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:42:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:42:51,184 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 23:42:51,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180667747] [2020-11-11 23:42:51,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:42:51,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:42:51,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904908764] [2020-11-11 23:42:51,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:42:51,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:42:51,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:42:51,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:42:51,189 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:42:51,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:42:51,221 INFO L93 Difference]: Finished difference Result 296 states and 796 transitions. [2020-11-11 23:42:51,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-11 23:42:51,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2020-11-11 23:42:51,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:42:51,224 INFO L225 Difference]: With dead ends: 296 [2020-11-11 23:42:51,224 INFO L226 Difference]: Without dead ends: 200 [2020-11-11 23:42:51,225 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:42:51,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-11-11 23:42:51,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2020-11-11 23:42:51,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.693467336683417) internal successors, (536), 199 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) [2020-11-11 23:42:51,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 536 transitions. [2020-11-11 23:42:51,246 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 536 transitions. Word has length 9 [2020-11-11 23:42:51,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:42:51,246 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 536 transitions. [2020-11-11 23:42:51,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:42:51,247 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 536 transitions. [2020-11-11 23:42:51,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-11 23:42:51,248 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:42:51,248 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:42:51,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-11 23:42:51,249 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:42:51,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:42:51,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1408455848, now seen corresponding path program 1 times [2020-11-11 23:42:51,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:42:51,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201824295] [2020-11-11 23:42:51,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:42:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:42:51,298 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 23:42:51,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201824295] [2020-11-11 23:42:51,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:42:51,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:42:51,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926570431] [2020-11-11 23:42:51,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:42:51,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:42:51,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:42:51,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:42:51,301 INFO L87 Difference]: Start difference. First operand 200 states and 536 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:42:51,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:42:51,333 INFO L93 Difference]: Finished difference Result 314 states and 804 transitions. [2020-11-11 23:42:51,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:42:51,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2020-11-11 23:42:51,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:42:51,336 INFO L225 Difference]: With dead ends: 314 [2020-11-11 23:42:51,336 INFO L226 Difference]: Without dead ends: 182 [2020-11-11 23:42:51,337 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:42:51,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-11-11 23:42:51,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 146. [2020-11-11 23:42:51,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.4413793103448276) internal successors, (354), 145 states have internal predecessors, (354), 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 23:42:51,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 354 transitions. [2020-11-11 23:42:51,350 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 354 transitions. Word has length 10 [2020-11-11 23:42:51,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:42:51,350 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 354 transitions. [2020-11-11 23:42:51,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:42:51,351 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 354 transitions. [2020-11-11 23:42:51,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-11 23:42:51,352 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:42:51,352 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:42:51,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-11 23:42:51,352 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:42:51,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:42:51,353 INFO L82 PathProgramCache]: Analyzing trace with hash 680668667, now seen corresponding path program 1 times [2020-11-11 23:42:51,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:42:51,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356279046] [2020-11-11 23:42:51,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:42:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:42:51,429 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 23:42:51,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356279046] [2020-11-11 23:42:51,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:42:51,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:42:51,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497766708] [2020-11-11 23:42:51,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-11 23:42:51,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:42:51,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-11 23:42:51,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:42:51,432 INFO L87 Difference]: Start difference. First operand 146 states and 354 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:42:51,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:42:51,446 INFO L93 Difference]: Finished difference Result 176 states and 419 transitions. [2020-11-11 23:42:51,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-11 23:42:51,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2020-11-11 23:42:51,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:42:51,447 INFO L225 Difference]: With dead ends: 176 [2020-11-11 23:42:51,448 INFO L226 Difference]: Without dead ends: 86 [2020-11-11 23:42:51,448 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:42:51,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-11 23:42:51,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-11-11 23:42:51,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.3411764705882354) internal successors, (199), 85 states have internal predecessors, (199), 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 23:42:51,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 199 transitions. [2020-11-11 23:42:51,456 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 199 transitions. Word has length 11 [2020-11-11 23:42:51,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:42:51,456 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 199 transitions. [2020-11-11 23:42:51,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:42:51,458 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 199 transitions. [2020-11-11 23:42:51,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-11 23:42:51,459 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:42:51,459 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:42:51,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-11 23:42:51,460 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:42:51,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:42:51,460 INFO L82 PathProgramCache]: Analyzing trace with hash -374108818, now seen corresponding path program 1 times [2020-11-11 23:42:51,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:42:51,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120122581] [2020-11-11 23:42:51,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:42:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:42:51,491 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 23:42:51,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120122581] [2020-11-11 23:42:51,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:42:51,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-11 23:42:51,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972186252] [2020-11-11 23:42:51,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-11 23:42:51,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:42:51,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-11 23:42:51,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:42:51,493 INFO L87 Difference]: Start difference. First operand 86 states and 199 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 23:42:51,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:42:51,500 INFO L93 Difference]: Finished difference Result 80 states and 180 transitions. [2020-11-11 23:42:51,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-11 23:42:51,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2020-11-11 23:42:51,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:42:51,501 INFO L225 Difference]: With dead ends: 80 [2020-11-11 23:42:51,501 INFO L226 Difference]: Without dead ends: 80 [2020-11-11 23:42:51,502 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:42:51,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-11 23:42:51,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-11-11 23:42:51,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 2.278481012658228) internal successors, (180), 79 states have internal predecessors, (180), 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 23:42:51,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 180 transitions. [2020-11-11 23:42:51,507 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 180 transitions. Word has length 12 [2020-11-11 23:42:51,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:42:51,507 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 180 transitions. [2020-11-11 23:42:51,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 23:42:51,507 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 180 transitions. [2020-11-11 23:42:51,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-11 23:42:51,508 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:42:51,508 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:42:51,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-11 23:42:51,509 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:42:51,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:42:51,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1287493880, now seen corresponding path program 1 times [2020-11-11 23:42:51,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:42:51,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259599384] [2020-11-11 23:42:51,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:42:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:42:51,593 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 23:42:51,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259599384] [2020-11-11 23:42:51,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:42:51,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:42:51,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943823792] [2020-11-11 23:42:51,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-11 23:42:51,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:42:51,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-11 23:42:51,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-11 23:42:51,595 INFO L87 Difference]: Start difference. First operand 80 states and 180 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:42:51,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:42:51,625 INFO L93 Difference]: Finished difference Result 97 states and 201 transitions. [2020-11-11 23:42:51,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-11 23:42:51,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2020-11-11 23:42:51,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:42:51,627 INFO L225 Difference]: With dead ends: 97 [2020-11-11 23:42:51,627 INFO L226 Difference]: Without dead ends: 69 [2020-11-11 23:42:51,627 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:42:51,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-11 23:42:51,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-11-11 23:42:51,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 2.073529411764706) internal successors, (141), 68 states have internal predecessors, (141), 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 23:42:51,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 141 transitions. [2020-11-11 23:42:51,632 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 141 transitions. Word has length 13 [2020-11-11 23:42:51,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:42:51,632 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 141 transitions. [2020-11-11 23:42:51,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:42:51,632 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 141 transitions. [2020-11-11 23:42:51,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-11 23:42:51,633 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:42:51,633 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:42:51,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-11 23:42:51,634 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:42:51,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:42:51,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1489886777, now seen corresponding path program 1 times [2020-11-11 23:42:51,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:42:51,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929725186] [2020-11-11 23:42:51,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:42:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:42:51,691 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 23:42:51,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929725186] [2020-11-11 23:42:51,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:42:51,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-11 23:42:51,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934899275] [2020-11-11 23:42:51,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-11 23:42:51,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:42:51,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-11 23:42:51,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-11 23:42:51,694 INFO L87 Difference]: Start difference. First operand 69 states and 141 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:42:51,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:42:51,732 INFO L93 Difference]: Finished difference Result 71 states and 132 transitions. [2020-11-11 23:42:51,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-11 23:42:51,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2020-11-11 23:42:51,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:42:51,734 INFO L225 Difference]: With dead ends: 71 [2020-11-11 23:42:51,734 INFO L226 Difference]: Without dead ends: 52 [2020-11-11 23:42:51,734 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-11 23:42:51,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-11 23:42:51,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-11-11 23:42:51,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.7843137254901962) internal successors, (91), 51 states have internal predecessors, (91), 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 23:42:51,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 91 transitions. [2020-11-11 23:42:51,737 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 91 transitions. Word has length 14 [2020-11-11 23:42:51,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:42:51,738 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 91 transitions. [2020-11-11 23:42:51,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:42:51,738 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 91 transitions. [2020-11-11 23:42:51,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-11 23:42:51,739 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:42:51,739 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:42:51,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-11 23:42:51,739 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:42:51,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:42:51,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1058152393, now seen corresponding path program 1 times [2020-11-11 23:42:51,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:42:51,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279374648] [2020-11-11 23:42:51,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:42:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:42:51,809 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 23:42:51,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279374648] [2020-11-11 23:42:51,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:42:51,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-11 23:42:51,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370252223] [2020-11-11 23:42:51,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-11 23:42:51,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:42:51,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-11 23:42:51,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-11 23:42:51,812 INFO L87 Difference]: Start difference. First operand 52 states and 91 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:42:51,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:42:51,861 INFO L93 Difference]: Finished difference Result 49 states and 83 transitions. [2020-11-11 23:42:51,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-11 23:42:51,862 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2020-11-11 23:42:51,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:42:51,863 INFO L225 Difference]: With dead ends: 49 [2020-11-11 23:42:51,863 INFO L226 Difference]: Without dead ends: 42 [2020-11-11 23:42:51,863 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-11 23:42:51,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-11 23:42:51,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-11-11 23:42:51,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 41 states have internal predecessors, (71), 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 23:42:51,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 71 transitions. [2020-11-11 23:42:51,866 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 71 transitions. Word has length 15 [2020-11-11 23:42:51,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:42:51,866 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 71 transitions. [2020-11-11 23:42:51,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-11 23:42:51,866 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 71 transitions. [2020-11-11 23:42:51,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-11 23:42:51,867 INFO L486 BasicCegarLoop]: Found error trace [2020-11-11 23:42:51,867 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-11 23:42:51,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-11 23:42:51,867 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-11 23:42:51,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-11 23:42:51,868 INFO L82 PathProgramCache]: Analyzing trace with hash -840966858, now seen corresponding path program 1 times [2020-11-11 23:42:51,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-11 23:42:51,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694474671] [2020-11-11 23:42:51,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-11 23:42:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-11 23:42:51,893 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 23:42:51,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694474671] [2020-11-11 23:42:51,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-11 23:42:51,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-11 23:42:51,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792250448] [2020-11-11 23:42:51,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-11 23:42:51,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-11 23:42:51,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-11 23:42:51,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:42:51,897 INFO L87 Difference]: Start difference. First operand 42 states and 71 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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 23:42:51,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-11 23:42:51,902 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-11-11 23:42:51,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-11 23:42:51,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2020-11-11 23:42:51,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-11 23:42:51,903 INFO L225 Difference]: With dead ends: 41 [2020-11-11 23:42:51,903 INFO L226 Difference]: Without dead ends: 0 [2020-11-11 23:42:51,904 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-11 23:42:51,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-11 23:42:51,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-11 23:42:51,905 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 23:42:51,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-11 23:42:51,905 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-11 23:42:51,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-11 23:42:51,905 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-11 23:42:51,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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 23:42:51,906 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-11 23:42:51,906 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-11 23:42:51,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-11 23:42:51,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 11:42:51 BasicIcfg [2020-11-11 23:42:51,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-11 23:42:51,912 INFO L168 Benchmark]: Toolchain (without parser) took 7637.18 ms. Allocated memory was 302.0 MB in the beginning and 367.0 MB in the end (delta: 65.0 MB). Free memory was 277.5 MB in the beginning and 242.2 MB in the end (delta: 35.4 MB). Peak memory consumption was 102.6 MB. Max. memory is 16.0 GB. [2020-11-11 23:42:51,913 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-11 23:42:51,914 INFO L168 Benchmark]: CACSL2BoogieTranslator took 635.26 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 23:42:51,915 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.08 ms. Allocated memory is still 302.0 MB. Free memory was 246.1 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 23:42:51,920 INFO L168 Benchmark]: Boogie Preprocessor took 26.80 ms. Allocated memory is still 302.0 MB. Free memory was 244.1 MB in the beginning and 242.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-11 23:42:51,920 INFO L168 Benchmark]: RCFGBuilder took 603.31 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: -21.9 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. [2020-11-11 23:42:51,924 INFO L168 Benchmark]: TraceAbstraction took 6304.45 ms. Allocated memory was 302.0 MB in the beginning and 367.0 MB in the end (delta: 65.0 MB). Free memory was 264.6 MB in the beginning and 242.2 MB in the end (delta: 22.4 MB). Peak memory consumption was 87.4 MB. Max. memory is 16.0 GB. [2020-11-11 23:42:51,932 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 635.26 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 56.08 ms. Allocated memory is still 302.0 MB. Free memory was 246.1 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 26.80 ms. Allocated memory is still 302.0 MB. Free memory was 244.1 MB in the beginning and 242.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 603.31 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: -21.9 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6304.45 ms. Allocated memory was 302.0 MB in the beginning and 367.0 MB in the end (delta: 65.0 MB). Free memory was 264.6 MB in the beginning and 242.2 MB in the end (delta: 22.4 MB). Peak memory consumption was 87.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 968 VarBasedMoverChecksPositive, 60 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 47 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 76 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.8s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 72 TotalNumberOfCompositions, 3166 MoverChecksTotal - 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: 6.1s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.8s, HoareTripleCheckerStatistics: 172 SDtfs, 130 SDslu, 180 SDs, 0 SdLazy, 118 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 36 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 3340 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...