/usr/bin/java -Xmx8000000000 -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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 12:53:32,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 12:53:32,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 12:53:32,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 12:53:32,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 12:53:32,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 12:53:32,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 12:53:32,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 12:53:32,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 12:53:32,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 12:53:32,770 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 12:53:32,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 12:53:32,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 12:53:32,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 12:53:32,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 12:53:32,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 12:53:32,783 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 12:53:32,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 12:53:32,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 12:53:32,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 12:53:32,828 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 12:53:32,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 12:53:32,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 12:53:32,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 12:53:32,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 12:53:32,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 12:53:32,842 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 12:53:32,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 12:53:32,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 12:53:32,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 12:53:32,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 12:53:32,847 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 12:53:32,847 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 12:53:32,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 12:53:32,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 12:53:32,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 12:53:32,851 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-09 12:53:32,879 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 12:53:32,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 12:53:32,880 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 12:53:32,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 12:53:32,881 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 12:53:32,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 12:53:32,882 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 12:53:32,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 12:53:32,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 12:53:32,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 12:53:32,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 12:53:32,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 12:53:32,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 12:53:32,883 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 12:53:32,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 12:53:32,884 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 12:53:32,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 12:53:32,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 12:53:32,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 12:53:32,885 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 12:53:32,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 12:53:32,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 12:53:32,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 12:53:32,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-09 12:53:32,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 12:53:32,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 12:53:32,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 12:53:32,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 12:53:32,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-09 12:53:32,887 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 12:53:33,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 12:53:33,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 12:53:33,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 12:53:33,349 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 12:53:33,350 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 12:53:33,351 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2020-11-09 12:53:33,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa7404ba8/06d02c59d9a6483e82a635879b5cb64f/FLAGa1c7db3f6 [2020-11-09 12:53:34,309 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 12:53:34,310 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2020-11-09 12:53:34,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa7404ba8/06d02c59d9a6483e82a635879b5cb64f/FLAGa1c7db3f6 [2020-11-09 12:53:34,507 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa7404ba8/06d02c59d9a6483e82a635879b5cb64f [2020-11-09 12:53:34,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 12:53:34,517 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 12:53:34,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 12:53:34,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 12:53:34,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 12:53:34,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:53:34" (1/1) ... [2020-11-09 12:53:34,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c3a9ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:53:34, skipping insertion in model container [2020-11-09 12:53:34,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:53:34" (1/1) ... [2020-11-09 12:53:34,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 12:53:34,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 12:53:35,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:53:35,168 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 12:53:35,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 12:53:35,423 INFO L208 MainTranslator]: Completed translation [2020-11-09 12:53:35,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:53:35 WrapperNode [2020-11-09 12:53:35,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 12:53:35,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 12:53:35,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 12:53:35,427 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 12:53:35,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:53:35" (1/1) ... [2020-11-09 12:53:35,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:53:35" (1/1) ... [2020-11-09 12:53:35,520 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 12:53:35,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 12:53:35,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 12:53:35,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 12:53:35,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:53:35" (1/1) ... [2020-11-09 12:53:35,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:53:35" (1/1) ... [2020-11-09 12:53:35,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:53:35" (1/1) ... [2020-11-09 12:53:35,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:53:35" (1/1) ... [2020-11-09 12:53:35,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:53:35" (1/1) ... [2020-11-09 12:53:35,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:53:35" (1/1) ... [2020-11-09 12:53:35,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:53:35" (1/1) ... [2020-11-09 12:53:35,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 12:53:35,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 12:53:35,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 12:53:35,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 12:53:35,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:53:35" (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 [2020-11-09 12:53:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 12:53:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 12:53:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 12:53:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 12:53:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 12:53:35,667 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 12:53:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 12:53:35,667 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 12:53:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 12:53:35,667 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 12:53:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 12:53:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 12:53:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 12:53:35,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 12:53:35,670 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 12:53:36,194 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 12:53:36,195 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 12:53:36,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:53:36 BoogieIcfgContainer [2020-11-09 12:53:36,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 12:53:36,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 12:53:36,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 12:53:36,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 12:53:36,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 12:53:34" (1/3) ... [2020-11-09 12:53:36,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c00c9e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:53:36, skipping insertion in model container [2020-11-09 12:53:36,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:53:35" (2/3) ... [2020-11-09 12:53:36,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c00c9e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 12:53:36, skipping insertion in model container [2020-11-09 12:53:36,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:53:36" (3/3) ... [2020-11-09 12:53:36,208 INFO L111 eAbstractionObserver]: Analyzing ICFG safe031_tso.oepc.i [2020-11-09 12:53:36,225 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 12:53:36,226 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-09 12:53:36,230 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 12:53:36,232 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 12:53:36,274 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,274 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,275 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,275 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,275 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,275 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,276 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,276 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,276 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,277 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,277 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,277 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,277 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,278 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,278 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,278 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,278 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,278 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,279 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,279 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,279 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,280 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,280 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,280 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,280 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,281 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,281 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,281 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,281 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,281 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,282 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,282 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,282 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,282 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,283 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,283 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,285 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,286 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,286 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,286 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,293 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,294 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,294 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,294 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,298 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,298 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,298 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,299 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 12:53:36,303 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 12:53:36,318 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 12:53:36,365 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 12:53:36,365 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 12:53:36,365 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-09 12:53:36,365 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-09 12:53:36,366 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 12:53:36,366 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 12:53:36,366 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 12:53:36,366 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 12:53:36,385 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-09 12:53:36,389 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-09 12:53:36,393 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-09 12:53:36,395 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-09 12:53:36,477 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-09 12:53:36,478 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 12:53:36,485 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 57 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. [2020-11-09 12:53:36,491 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 12:53:40,246 WARN L194 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-09 12:53:40,366 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 12:53:40,600 WARN L194 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-09 12:53:40,703 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 12:53:40,722 INFO L131 LiptonReduction]: Checked pairs total: 2814 [2020-11-09 12:53:40,723 INFO L133 LiptonReduction]: Total number of compositions: 71 [2020-11-09 12:53:40,729 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-09 12:53:40,758 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-09 12:53:40,760 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-09 12:53:40,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 12:53:40,769 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:53:40,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:53:40,770 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:53:40,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:53:40,777 INFO L82 PathProgramCache]: Analyzing trace with hash 515529937, now seen corresponding path program 1 times [2020-11-09 12:53:40,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:53:40,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685577045] [2020-11-09 12:53:40,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:53:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:53:41,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:53:41,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685577045] [2020-11-09 12:53:41,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:53:41,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:53:41,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867870857] [2020-11-09 12:53:41,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-09 12:53:41,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:53:41,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-09 12:53:41,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 12:53:41,088 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-09 12:53:41,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:53:41,132 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-09 12:53:41,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-09 12:53:41,134 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-09 12:53:41,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:53:41,153 INFO L225 Difference]: With dead ends: 362 [2020-11-09 12:53:41,154 INFO L226 Difference]: Without dead ends: 298 [2020-11-09 12:53:41,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 12:53:41,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-09 12:53:41,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-09 12:53:41,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-09 12:53:41,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-09 12:53:41,306 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-09 12:53:41,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:53:41,310 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-09 12:53:41,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-09 12:53:41,310 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-09 12:53:41,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 12:53:41,315 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:53:41,315 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:53:41,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 12:53:41,316 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:53:41,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:53:41,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1198450655, now seen corresponding path program 1 times [2020-11-09 12:53:41,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:53:41,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901541125] [2020-11-09 12:53:41,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:53:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:53:41,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:53:41,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901541125] [2020-11-09 12:53:41,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:53:41,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:53:41,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2653522] [2020-11-09 12:53:41,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:53:41,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:53:41,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:53:41,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:53:41,557 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-11-09 12:53:41,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:53:41,605 INFO L93 Difference]: Finished difference Result 346 states and 956 transitions. [2020-11-09 12:53:41,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:53:41,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-09 12:53:41,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:53:41,615 INFO L225 Difference]: With dead ends: 346 [2020-11-09 12:53:41,615 INFO L226 Difference]: Without dead ends: 282 [2020-11-09 12:53:41,616 INFO L677 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 [2020-11-09 12:53:41,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-11-09 12:53:41,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-11-09 12:53:41,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-11-09 12:53:41,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 804 transitions. [2020-11-09 12:53:41,660 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 804 transitions. Word has length 9 [2020-11-09 12:53:41,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:53:41,661 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 804 transitions. [2020-11-09 12:53:41,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:53:41,661 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 804 transitions. [2020-11-09 12:53:41,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 12:53:41,662 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:53:41,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:53:41,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 12:53:41,664 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:53:41,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:53:41,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1501217071, now seen corresponding path program 1 times [2020-11-09 12:53:41,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:53:41,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644075646] [2020-11-09 12:53:41,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:53:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:53:41,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:53:41,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644075646] [2020-11-09 12:53:41,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:53:41,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 12:53:41,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253033840] [2020-11-09 12:53:41,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:53:41,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:53:41,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:53:41,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:53:41,797 INFO L87 Difference]: Start difference. First operand 282 states and 804 transitions. Second operand 4 states. [2020-11-09 12:53:41,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:53:41,837 INFO L93 Difference]: Finished difference Result 326 states and 888 transitions. [2020-11-09 12:53:41,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:53:41,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-09 12:53:41,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:53:41,842 INFO L225 Difference]: With dead ends: 326 [2020-11-09 12:53:41,842 INFO L226 Difference]: Without dead ends: 270 [2020-11-09 12:53:41,843 INFO L677 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 [2020-11-09 12:53:41,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-11-09 12:53:41,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2020-11-09 12:53:41,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-11-09 12:53:41,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 760 transitions. [2020-11-09 12:53:41,870 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 760 transitions. Word has length 10 [2020-11-09 12:53:41,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:53:41,870 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 760 transitions. [2020-11-09 12:53:41,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:53:41,870 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 760 transitions. [2020-11-09 12:53:41,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 12:53:41,876 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:53:41,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:53:41,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 12:53:41,877 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:53:41,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:53:41,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1186186363, now seen corresponding path program 1 times [2020-11-09 12:53:41,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:53:41,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935316075] [2020-11-09 12:53:41,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:53:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:53:42,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:53:42,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935316075] [2020-11-09 12:53:42,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:53:42,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:53:42,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065965011] [2020-11-09 12:53:42,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:53:42,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:53:42,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:53:42,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:53:42,023 INFO L87 Difference]: Start difference. First operand 270 states and 760 transitions. Second operand 4 states. [2020-11-09 12:53:42,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:53:42,063 INFO L93 Difference]: Finished difference Result 273 states and 687 transitions. [2020-11-09 12:53:42,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:53:42,065 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-09 12:53:42,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:53:42,067 INFO L225 Difference]: With dead ends: 273 [2020-11-09 12:53:42,068 INFO L226 Difference]: Without dead ends: 209 [2020-11-09 12:53:42,068 INFO L677 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 [2020-11-09 12:53:42,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-11-09 12:53:42,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2020-11-09 12:53:42,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-11-09 12:53:42,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 516 transitions. [2020-11-09 12:53:42,078 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 516 transitions. Word has length 11 [2020-11-09 12:53:42,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:53:42,078 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 516 transitions. [2020-11-09 12:53:42,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:53:42,078 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 516 transitions. [2020-11-09 12:53:42,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 12:53:42,082 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:53:42,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:53:42,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 12:53:42,086 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:53:42,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:53:42,087 INFO L82 PathProgramCache]: Analyzing trace with hash -497822471, now seen corresponding path program 1 times [2020-11-09 12:53:42,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:53:42,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251149083] [2020-11-09 12:53:42,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:53:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:53:42,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:53:42,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251149083] [2020-11-09 12:53:42,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:53:42,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:53:42,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325797475] [2020-11-09 12:53:42,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:53:42,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:53:42,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:53:42,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:53:42,188 INFO L87 Difference]: Start difference. First operand 209 states and 516 transitions. Second operand 4 states. [2020-11-09 12:53:42,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:53:42,213 INFO L93 Difference]: Finished difference Result 303 states and 706 transitions. [2020-11-09 12:53:42,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:53:42,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-09 12:53:42,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:53:42,218 INFO L225 Difference]: With dead ends: 303 [2020-11-09 12:53:42,218 INFO L226 Difference]: Without dead ends: 223 [2020-11-09 12:53:42,218 INFO L677 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 [2020-11-09 12:53:42,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-11-09 12:53:42,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 199. [2020-11-09 12:53:42,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-11-09 12:53:42,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 470 transitions. [2020-11-09 12:53:42,228 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 470 transitions. Word has length 12 [2020-11-09 12:53:42,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:53:42,229 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 470 transitions. [2020-11-09 12:53:42,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:53:42,229 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 470 transitions. [2020-11-09 12:53:42,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 12:53:42,230 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:53:42,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:53:42,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 12:53:42,231 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:53:42,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:53:42,231 INFO L82 PathProgramCache]: Analyzing trace with hash -319232189, now seen corresponding path program 1 times [2020-11-09 12:53:42,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:53:42,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900442913] [2020-11-09 12:53:42,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:53:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:53:42,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:53:42,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900442913] [2020-11-09 12:53:42,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:53:42,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:53:42,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221362037] [2020-11-09 12:53:42,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:53:42,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:53:42,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:53:42,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:53:42,366 INFO L87 Difference]: Start difference. First operand 199 states and 470 transitions. Second operand 5 states. [2020-11-09 12:53:42,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:53:42,410 INFO L93 Difference]: Finished difference Result 171 states and 364 transitions. [2020-11-09 12:53:42,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 12:53:42,411 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-09 12:53:42,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:53:42,412 INFO L225 Difference]: With dead ends: 171 [2020-11-09 12:53:42,412 INFO L226 Difference]: Without dead ends: 134 [2020-11-09 12:53:42,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:53:42,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-11-09 12:53:42,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-11-09 12:53:42,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-11-09 12:53:42,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 280 transitions. [2020-11-09 12:53:42,418 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 280 transitions. Word has length 13 [2020-11-09 12:53:42,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:53:42,419 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 280 transitions. [2020-11-09 12:53:42,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:53:42,419 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 280 transitions. [2020-11-09 12:53:42,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 12:53:42,420 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:53:42,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:53:42,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 12:53:42,420 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:53:42,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:53:42,421 INFO L82 PathProgramCache]: Analyzing trace with hash 447753789, now seen corresponding path program 1 times [2020-11-09 12:53:42,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:53:42,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559178853] [2020-11-09 12:53:42,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:53:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:53:42,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:53:42,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559178853] [2020-11-09 12:53:42,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:53:42,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 12:53:42,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012084447] [2020-11-09 12:53:42,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 12:53:42,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:53:42,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 12:53:42,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 12:53:42,473 INFO L87 Difference]: Start difference. First operand 134 states and 280 transitions. Second operand 4 states. [2020-11-09 12:53:42,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:53:42,495 INFO L93 Difference]: Finished difference Result 177 states and 347 transitions. [2020-11-09 12:53:42,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:53:42,496 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-09 12:53:42,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:53:42,497 INFO L225 Difference]: With dead ends: 177 [2020-11-09 12:53:42,497 INFO L226 Difference]: Without dead ends: 130 [2020-11-09 12:53:42,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:53:42,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-11-09 12:53:42,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2020-11-09 12:53:42,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-11-09 12:53:42,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 248 transitions. [2020-11-09 12:53:42,503 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 248 transitions. Word has length 15 [2020-11-09 12:53:42,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:53:42,503 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 248 transitions. [2020-11-09 12:53:42,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 12:53:42,503 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 248 transitions. [2020-11-09 12:53:42,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 12:53:42,504 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:53:42,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:53:42,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 12:53:42,504 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:53:42,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:53:42,505 INFO L82 PathProgramCache]: Analyzing trace with hash 144030791, now seen corresponding path program 1 times [2020-11-09 12:53:42,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:53:42,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321965110] [2020-11-09 12:53:42,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:53:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:53:42,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:53:42,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321965110] [2020-11-09 12:53:42,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:53:42,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-09 12:53:42,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197816845] [2020-11-09 12:53:42,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 12:53:42,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:53:42,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 12:53:42,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 12:53:42,568 INFO L87 Difference]: Start difference. First operand 126 states and 248 transitions. Second operand 6 states. [2020-11-09 12:53:42,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:53:42,618 INFO L93 Difference]: Finished difference Result 113 states and 220 transitions. [2020-11-09 12:53:42,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 12:53:42,618 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-09 12:53:42,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:53:42,619 INFO L225 Difference]: With dead ends: 113 [2020-11-09 12:53:42,619 INFO L226 Difference]: Without dead ends: 37 [2020-11-09 12:53:42,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:53:42,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-09 12:53:42,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-09 12:53:42,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-09 12:53:42,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-11-09 12:53:42,622 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 15 [2020-11-09 12:53:42,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:53:42,622 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-11-09 12:53:42,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 12:53:42,622 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-11-09 12:53:42,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 12:53:42,623 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 12:53:42,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 12:53:42,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 12:53:42,623 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 12:53:42,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 12:53:42,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1289085181, now seen corresponding path program 1 times [2020-11-09 12:53:42,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 12:53:42,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143103069] [2020-11-09 12:53:42,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 12:53:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 12:53:42,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 12:53:42,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143103069] [2020-11-09 12:53:42,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 12:53:42,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 12:53:42,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426846755] [2020-11-09 12:53:42,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 12:53:42,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 12:53:42,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 12:53:42,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 12:53:42,732 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-11-09 12:53:42,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 12:53:42,765 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-11-09 12:53:42,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 12:53:42,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-09 12:53:42,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 12:53:42,766 INFO L225 Difference]: With dead ends: 36 [2020-11-09 12:53:42,766 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 12:53:42,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 12:53:42,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 12:53:42,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 12:53:42,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 12:53:42,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 12:53:42,768 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-09 12:53:42,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 12:53:42,768 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 12:53:42,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 12:53:42,768 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 12:53:42,768 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 12:53:42,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-09 12:53:42,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 12:53:42 BasicIcfg [2020-11-09 12:53:42,774 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 12:53:42,776 INFO L168 Benchmark]: Toolchain (without parser) took 8263.61 ms. Allocated memory was 151.0 MB in the beginning and 223.3 MB in the end (delta: 72.4 MB). Free memory was 124.8 MB in the beginning and 189.9 MB in the end (delta: -65.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-11-09 12:53:42,777 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 12:53:42,779 INFO L168 Benchmark]: CACSL2BoogieTranslator took 905.20 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 125.6 MB in the end (delta: -1.4 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:53:42,779 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.02 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 123.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 12:53:42,786 INFO L168 Benchmark]: Boogie Preprocessor took 56.57 ms. Allocated memory is still 151.0 MB. Free memory was 123.5 MB in the beginning and 122.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:53:42,787 INFO L168 Benchmark]: RCFGBuilder took 619.27 ms. Allocated memory is still 151.0 MB. Free memory was 122.5 MB in the beginning and 100.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 12:53:42,790 INFO L168 Benchmark]: TraceAbstraction took 6574.63 ms. Allocated memory was 151.0 MB in the beginning and 223.3 MB in the end (delta: 72.4 MB). Free memory was 99.9 MB in the beginning and 189.9 MB in the end (delta: -89.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 12:53:42,797 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 905.20 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 125.6 MB in the end (delta: -1.4 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 94.02 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 123.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.57 ms. Allocated memory is still 151.0 MB. Free memory was 123.5 MB in the beginning and 122.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 619.27 ms. Allocated memory is still 151.0 MB. Free memory was 122.5 MB in the beginning and 100.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6574.63 ms. Allocated memory was 151.0 MB in the beginning and 223.3 MB in the end (delta: 72.4 MB). Free memory was 99.9 MB in the beginning and 189.9 MB in the end (delta: -89.9 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 947 VarBasedMoverChecksPositive, 39 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 72 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.3s, 85 PlacesBefore, 32 PlacesAfterwards, 78 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 71 TotalNumberOfCompositions, 2814 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: 6.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 212 SDtfs, 166 SDslu, 311 SDs, 0 SdLazy, 117 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 3039 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...