/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/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 17:02:10,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 17:02:10,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 17:02:10,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 17:02:10,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 17:02:10,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 17:02:10,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 17:02:10,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 17:02:10,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 17:02:10,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 17:02:10,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 17:02:10,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 17:02:10,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 17:02:10,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 17:02:10,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 17:02:10,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 17:02:10,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 17:02:10,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 17:02:10,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 17:02:10,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 17:02:10,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 17:02:10,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 17:02:10,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 17:02:10,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 17:02:10,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 17:02:10,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 17:02:10,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 17:02:10,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 17:02:10,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 17:02:10,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 17:02:10,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 17:02:10,315 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 17:02:10,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 17:02:10,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 17:02:10,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 17:02:10,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 17:02:10,320 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf [2020-11-09 17:02:10,383 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 17:02:10,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 17:02:10,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 17:02:10,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 17:02:10,390 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 17:02:10,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 17:02:10,390 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 17:02:10,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 17:02:10,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 17:02:10,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 17:02:10,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 17:02:10,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 17:02:10,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 17:02:10,394 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 17:02:10,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 17:02:10,394 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 17:02:10,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 17:02:10,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 17:02:10,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 17:02:10,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 17:02:10,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 17:02:10,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 17:02:10,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 17:02:10,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 17:02:10,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 17:02:10,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 17:02:10,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 17:02:10,396 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 17:02:10,396 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 17:02:10,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 17:02:10,397 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 17:02:10,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 17:02:10,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 17:02:10,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 17:02:10,880 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 17:02:10,881 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 17:02:10,882 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.opt.i [2020-11-09 17:02:10,958 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/066b3318f/8b44583f2a964c6dba3f011f8c20008a/FLAG0186a39c2 [2020-11-09 17:02:11,684 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 17:02:11,685 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_pso.opt.i [2020-11-09 17:02:11,704 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/066b3318f/8b44583f2a964c6dba3f011f8c20008a/FLAG0186a39c2 [2020-11-09 17:02:11,934 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/066b3318f/8b44583f2a964c6dba3f011f8c20008a [2020-11-09 17:02:11,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 17:02:11,946 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 17:02:11,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 17:02:11,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 17:02:11,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 17:02:11,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:02:11" (1/1) ... [2020-11-09 17:02:11,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56715127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:11, skipping insertion in model container [2020-11-09 17:02:11,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:02:11" (1/1) ... [2020-11-09 17:02:11,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 17:02:12,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 17:02:12,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:02:12,471 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 17:02:12,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:02:12,668 INFO L208 MainTranslator]: Completed translation [2020-11-09 17:02:12,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:12 WrapperNode [2020-11-09 17:02:12,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 17:02:12,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 17:02:12,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 17:02:12,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 17:02:12,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:12" (1/1) ... [2020-11-09 17:02:12,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:12" (1/1) ... [2020-11-09 17:02:12,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 17:02:12,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 17:02:12,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 17:02:12,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 17:02:12,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:12" (1/1) ... [2020-11-09 17:02:12,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:12" (1/1) ... [2020-11-09 17:02:12,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:12" (1/1) ... [2020-11-09 17:02:12,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:12" (1/1) ... [2020-11-09 17:02:12,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:12" (1/1) ... [2020-11-09 17:02:12,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:12" (1/1) ... [2020-11-09 17:02:12,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:12" (1/1) ... [2020-11-09 17:02:12,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 17:02:12,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 17:02:12,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 17:02:12,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 17:02:12,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:12" (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 17:02:12,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 17:02:12,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 17:02:12,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 17:02:12,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 17:02:12,840 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 17:02:12,840 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 17:02:12,840 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 17:02:12,840 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 17:02:12,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 17:02:12,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 17:02:12,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 17:02:12,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 17:02:12,843 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 17:02:13,226 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 17:02:13,226 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 17:02:13,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:02:13 BoogieIcfgContainer [2020-11-09 17:02:13,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 17:02:13,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 17:02:13,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 17:02:13,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 17:02:13,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:02:11" (1/3) ... [2020-11-09 17:02:13,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19170a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:02:13, skipping insertion in model container [2020-11-09 17:02:13,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:12" (2/3) ... [2020-11-09 17:02:13,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19170a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:02:13, skipping insertion in model container [2020-11-09 17:02:13,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:02:13" (3/3) ... [2020-11-09 17:02:13,238 INFO L111 eAbstractionObserver]: Analyzing ICFG safe006_pso.opt.i [2020-11-09 17:02:13,255 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 17:02:13,256 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 17:02:13,259 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 17:02:13,260 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 17:02:13,291 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,291 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,291 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,291 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,292 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,292 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,292 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,292 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,293 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,293 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,293 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,294 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,294 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,294 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,295 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,295 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,295 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,295 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,295 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,296 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,296 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,296 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,297 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,297 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,299 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,300 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,300 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,300 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,310 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,310 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,311 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,311 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:13,318 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 17:02:13,331 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-09 17:02:13,366 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 17:02:13,366 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 17:02:13,366 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 17:02:13,367 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 17:02:13,367 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 17:02:13,367 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 17:02:13,367 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 17:02:13,367 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 17:02:13,382 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 17:02:13,383 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 65 transitions, 140 flow [2020-11-09 17:02:13,387 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 65 transitions, 140 flow [2020-11-09 17:02:13,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 65 transitions, 140 flow [2020-11-09 17:02:13,440 INFO L129 PetriNetUnfolder]: 3/63 cut-off events. [2020-11-09 17:02:13,440 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 17:02:13,447 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 63 events. 3/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2020-11-09 17:02:13,452 INFO L116 LiptonReduction]: Number of co-enabled transitions 792 [2020-11-09 17:02:13,863 WARN L194 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2020-11-09 17:02:16,138 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-11-09 17:02:16,344 WARN L194 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-11-09 17:02:16,780 WARN L194 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-09 17:02:16,899 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 17:02:17,133 WARN L194 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-09 17:02:17,256 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 17:02:17,304 INFO L131 LiptonReduction]: Checked pairs total: 1892 [2020-11-09 17:02:17,304 INFO L133 LiptonReduction]: Total number of compositions: 66 [2020-11-09 17:02:17,310 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2020-11-09 17:02:17,322 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2020-11-09 17:02:17,324 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-11-09 17:02:17,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-09 17:02:17,329 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:02:17,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-09 17:02:17,330 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:02:17,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:02:17,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1281927427, now seen corresponding path program 1 times [2020-11-09 17:02:17,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:02:17,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180013767] [2020-11-09 17:02:17,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:02:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:02:17,544 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 17:02:17,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180013767] [2020-11-09 17:02:17,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:02:17,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:02:17,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [183629747] [2020-11-09 17:02:17,548 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:02:17,555 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:02:17,573 INFO L252 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-11-09 17:02:17,573 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:02:17,581 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:02:17,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-09 17:02:17,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:02:17,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-09 17:02:17,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 17:02:17,606 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-11-09 17:02:17,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:02:17,626 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-11-09 17:02:17,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-09 17:02:17,628 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-09 17:02:17,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:02:17,643 INFO L225 Difference]: With dead ends: 90 [2020-11-09 17:02:17,643 INFO L226 Difference]: Without dead ends: 74 [2020-11-09 17:02:17,644 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 17:02:17,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-09 17:02:17,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-09 17:02:17,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-09 17:02:17,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2020-11-09 17:02:17,724 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2020-11-09 17:02:17,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:02:17,727 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2020-11-09 17:02:17,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-09 17:02:17,732 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2020-11-09 17:02:17,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-09 17:02:17,733 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:02:17,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:02:17,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 17:02:17,738 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:02:17,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:02:17,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1085050971, now seen corresponding path program 1 times [2020-11-09 17:02:17,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:02:17,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47642009] [2020-11-09 17:02:17,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:02:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:02:17,883 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 17:02:17,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47642009] [2020-11-09 17:02:17,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:02:17,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:02:17,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1123728767] [2020-11-09 17:02:17,885 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:02:17,885 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:02:17,887 INFO L252 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-11-09 17:02:17,887 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:02:17,888 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:02:17,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:02:17,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:02:17,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:02:17,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:02:17,892 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 5 states. [2020-11-09 17:02:17,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:02:17,983 INFO L93 Difference]: Finished difference Result 82 states and 166 transitions. [2020-11-09 17:02:17,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 17:02:17,983 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-11-09 17:02:17,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:02:17,984 INFO L225 Difference]: With dead ends: 82 [2020-11-09 17:02:17,985 INFO L226 Difference]: Without dead ends: 66 [2020-11-09 17:02:17,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:02:17,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-09 17:02:17,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-11-09 17:02:17,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-09 17:02:17,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 138 transitions. [2020-11-09 17:02:17,995 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 138 transitions. Word has length 7 [2020-11-09 17:02:17,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:02:17,995 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 138 transitions. [2020-11-09 17:02:17,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:02:17,996 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 138 transitions. [2020-11-09 17:02:17,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 17:02:17,997 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:02:17,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:02:17,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 17:02:17,997 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:02:17,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:02:17,998 INFO L82 PathProgramCache]: Analyzing trace with hash 608100949, now seen corresponding path program 1 times [2020-11-09 17:02:17,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:02:18,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452986814] [2020-11-09 17:02:18,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:02:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:02:18,114 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 17:02:18,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452986814] [2020-11-09 17:02:18,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:02:18,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:02:18,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2053557544] [2020-11-09 17:02:18,117 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:02:18,118 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:02:18,122 INFO L252 McrAutomatonBuilder]: Finished intersection with 12 states and 14 transitions. [2020-11-09 17:02:18,122 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:02:18,148 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:02:18,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:02:18,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:02:18,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:02:18,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:02:18,152 INFO L87 Difference]: Start difference. First operand 66 states and 138 transitions. Second operand 4 states. [2020-11-09 17:02:18,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:02:18,180 INFO L93 Difference]: Finished difference Result 72 states and 142 transitions. [2020-11-09 17:02:18,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 17:02:18,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-09 17:02:18,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:02:18,182 INFO L225 Difference]: With dead ends: 72 [2020-11-09 17:02:18,184 INFO L226 Difference]: Without dead ends: 60 [2020-11-09 17:02:18,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 17:02:18,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-09 17:02:18,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-11-09 17:02:18,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-09 17:02:18,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 122 transitions. [2020-11-09 17:02:18,200 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 122 transitions. Word has length 8 [2020-11-09 17:02:18,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:02:18,200 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 122 transitions. [2020-11-09 17:02:18,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:02:18,200 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 122 transitions. [2020-11-09 17:02:18,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 17:02:18,201 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:02:18,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:02:18,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 17:02:18,202 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:02:18,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:02:18,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1670451402, now seen corresponding path program 1 times [2020-11-09 17:02:18,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:02:18,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928986935] [2020-11-09 17:02:18,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:02:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:02:18,309 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 17:02:18,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928986935] [2020-11-09 17:02:18,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:02:18,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:02:18,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [193792239] [2020-11-09 17:02:18,310 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:02:18,311 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:02:18,313 INFO L252 McrAutomatonBuilder]: Finished intersection with 16 states and 22 transitions. [2020-11-09 17:02:18,313 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:02:18,374 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:02:18,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:02:18,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:02:18,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:02:18,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:02:18,377 INFO L87 Difference]: Start difference. First operand 60 states and 122 transitions. Second operand 5 states. [2020-11-09 17:02:18,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:02:18,447 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-11-09 17:02:18,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 17:02:18,448 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-09 17:02:18,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:02:18,450 INFO L225 Difference]: With dead ends: 75 [2020-11-09 17:02:18,450 INFO L226 Difference]: Without dead ends: 42 [2020-11-09 17:02:18,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-09 17:02:18,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-09 17:02:18,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-11-09 17:02:18,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-09 17:02:18,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 76 transitions. [2020-11-09 17:02:18,458 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 76 transitions. Word has length 9 [2020-11-09 17:02:18,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:02:18,458 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 76 transitions. [2020-11-09 17:02:18,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:02:18,459 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 76 transitions. [2020-11-09 17:02:18,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 17:02:18,463 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:02:18,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:02:18,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 17:02:18,464 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:02:18,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:02:18,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1631439828, now seen corresponding path program 1 times [2020-11-09 17:02:18,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:02:18,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539510324] [2020-11-09 17:02:18,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:02:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:02:18,612 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 17:02:18,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539510324] [2020-11-09 17:02:18,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:02:18,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 17:02:18,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [640902742] [2020-11-09 17:02:18,613 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:02:18,614 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:02:18,616 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 24 transitions. [2020-11-09 17:02:18,617 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:02:18,655 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:02:18,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:02:18,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:02:18,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:02:18,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:02:18,656 INFO L87 Difference]: Start difference. First operand 42 states and 76 transitions. Second operand 5 states. [2020-11-09 17:02:18,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:02:18,703 INFO L93 Difference]: Finished difference Result 36 states and 63 transitions. [2020-11-09 17:02:18,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 17:02:18,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-09 17:02:18,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:02:18,704 INFO L225 Difference]: With dead ends: 36 [2020-11-09 17:02:18,704 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 17:02:18,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-09 17:02:18,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 17:02:18,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 17:02:18,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 17:02:18,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 17:02:18,705 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-09 17:02:18,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:02:18,705 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 17:02:18,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:02:18,706 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 17:02:18,706 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 17:02:18,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 17:02:18,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:02:18 BasicIcfg [2020-11-09 17:02:18,710 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 17:02:18,715 INFO L168 Benchmark]: Toolchain (without parser) took 6770.55 ms. Allocated memory was 160.4 MB in the beginning and 204.5 MB in the end (delta: 44.0 MB). Free memory was 141.1 MB in the beginning and 171.1 MB in the end (delta: -29.9 MB). Peak memory consumption was 14.6 MB. Max. memory is 8.0 GB. [2020-11-09 17:02:18,716 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 160.4 MB. Free memory was 132.9 MB in the beginning and 132.9 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 17:02:18,717 INFO L168 Benchmark]: CACSL2BoogieTranslator took 721.43 ms. Allocated memory is still 160.4 MB. Free memory was 140.7 MB in the beginning and 124.2 MB in the end (delta: 16.4 MB). Peak memory consumption was 17.6 MB. Max. memory is 8.0 GB. [2020-11-09 17:02:18,724 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.55 ms. Allocated memory is still 160.4 MB. Free memory was 124.2 MB in the beginning and 122.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 17:02:18,724 INFO L168 Benchmark]: Boogie Preprocessor took 29.41 ms. Allocated memory is still 160.4 MB. Free memory was 122.2 MB in the beginning and 120.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:02:18,725 INFO L168 Benchmark]: RCFGBuilder took 475.31 ms. Allocated memory is still 160.4 MB. Free memory was 120.9 MB in the beginning and 101.2 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-11-09 17:02:18,726 INFO L168 Benchmark]: TraceAbstraction took 5479.97 ms. Allocated memory was 160.4 MB in the beginning and 204.5 MB in the end (delta: 44.0 MB). Free memory was 100.8 MB in the beginning and 171.1 MB in the end (delta: -70.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 17:02:18,733 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 160.4 MB. Free memory was 132.9 MB in the beginning and 132.9 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 721.43 ms. Allocated memory is still 160.4 MB. Free memory was 140.7 MB in the beginning and 124.2 MB in the end (delta: 16.4 MB). Peak memory consumption was 17.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 52.55 ms. Allocated memory is still 160.4 MB. Free memory was 124.2 MB in the beginning and 122.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.41 ms. Allocated memory is still 160.4 MB. Free memory was 122.2 MB in the beginning and 120.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 475.31 ms. Allocated memory is still 160.4 MB. Free memory was 120.9 MB in the beginning and 101.2 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5479.97 ms. Allocated memory was 160.4 MB in the beginning and 204.5 MB in the end (delta: 44.0 MB). Free memory was 100.8 MB in the beginning and 171.1 MB in the end (delta: -70.3 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 451 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 23 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.9s, 69 PlacesBefore, 23 PlacesAfterwards, 65 TransitionsBefore, 17 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 2 ChoiceCompositions, 66 TotalNumberOfCompositions, 1892 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 3 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 74 SDtfs, 65 SDslu, 97 SDs, 0 SdLazy, 44 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 997 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...