/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/safe008_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 17:02:49,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 17:02:49,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 17:02:49,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 17:02:49,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 17:02:49,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 17:02:49,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 17:02:49,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 17:02:49,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 17:02:49,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 17:02:49,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 17:02:49,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 17:02:49,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 17:02:49,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 17:02:49,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 17:02:49,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 17:02:49,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 17:02:49,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 17:02:49,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 17:02:49,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 17:02:49,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 17:02:49,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 17:02:49,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 17:02:49,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 17:02:49,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-09 17:02:49,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-09 17:02:49,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-09 17:02:49,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-09 17:02:49,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-09 17:02:49,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-09 17:02:49,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 17:02:49,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 17:02:49,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 17:02:49,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 17:02:49,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 17:02:49,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 17:02:49,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 17:02:49,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 17:02:49,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 17:02:49,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 17:02:49,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 17:02:49,670 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 17:02:49,697 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 17:02:49,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 17:02:49,699 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 17:02:49,699 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 17:02:49,699 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 17:02:49,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 17:02:49,700 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 17:02:49,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 17:02:49,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 17:02:49,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 17:02:49,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 17:02:49,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 17:02:49,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 17:02:49,701 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 17:02:49,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 17:02:49,701 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 17:02:49,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 17:02:49,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 17:02:49,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 17:02:49,702 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 17:02:49,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 17:02:49,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 17:02:49,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 17:02:49,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 17:02:49,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 17:02:49,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 17:02:49,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 17:02:49,704 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 17:02:49,704 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 17:02:49,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 17:02:49,704 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 17:02:50,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 17:02:50,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 17:02:50,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 17:02:50,172 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 17:02:50,173 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 17:02:50,175 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2020-11-09 17:02:50,252 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60e1161ce/d538e680151a43ecbe0f7ffd71c5a14d/FLAGafe9c4877 [2020-11-09 17:02:50,985 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 17:02:50,986 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2020-11-09 17:02:51,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60e1161ce/d538e680151a43ecbe0f7ffd71c5a14d/FLAGafe9c4877 [2020-11-09 17:02:51,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60e1161ce/d538e680151a43ecbe0f7ffd71c5a14d [2020-11-09 17:02:51,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 17:02:51,256 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 17:02:51,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 17:02:51,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 17:02:51,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 17:02:51,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:02:51" (1/1) ... [2020-11-09 17:02:51,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38564d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:51, skipping insertion in model container [2020-11-09 17:02:51,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:02:51" (1/1) ... [2020-11-09 17:02:51,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 17:02:51,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 17:02:51,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:02:51,745 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 17:02:51,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 17:02:51,959 INFO L208 MainTranslator]: Completed translation [2020-11-09 17:02:51,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:51 WrapperNode [2020-11-09 17:02:51,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 17:02:51,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 17:02:51,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 17:02:51,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 17:02:51,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:51" (1/1) ... [2020-11-09 17:02:51,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:51" (1/1) ... [2020-11-09 17:02:52,010 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 17:02:52,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 17:02:52,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 17:02:52,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 17:02:52,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:51" (1/1) ... [2020-11-09 17:02:52,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:51" (1/1) ... [2020-11-09 17:02:52,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:51" (1/1) ... [2020-11-09 17:02:52,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:51" (1/1) ... [2020-11-09 17:02:52,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:51" (1/1) ... [2020-11-09 17:02:52,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:51" (1/1) ... [2020-11-09 17:02:52,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:51" (1/1) ... [2020-11-09 17:02:52,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 17:02:52,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 17:02:52,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 17:02:52,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 17:02:52,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:51" (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 17:02:52,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 17:02:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 17:02:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 17:02:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 17:02:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 17:02:52,124 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 17:02:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 17:02:52,124 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 17:02:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 17:02:52,125 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 17:02:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 17:02:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 17:02:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 17:02:52,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 17:02:52,127 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 17:02:52,501 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 17:02:52,501 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 17:02:52,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:02:52 BoogieIcfgContainer [2020-11-09 17:02:52,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 17:02:52,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 17:02:52,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 17:02:52,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 17:02:52,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:02:51" (1/3) ... [2020-11-09 17:02:52,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7059b277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:02:52, skipping insertion in model container [2020-11-09 17:02:52,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:02:51" (2/3) ... [2020-11-09 17:02:52,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7059b277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:02:52, skipping insertion in model container [2020-11-09 17:02:52,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:02:52" (3/3) ... [2020-11-09 17:02:52,514 INFO L111 eAbstractionObserver]: Analyzing ICFG safe008_tso.oepc.i [2020-11-09 17:02:52,541 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 17:02:52,542 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 17:02:52,546 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 17:02:52,547 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 17:02:52,579 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,579 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,579 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,580 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,580 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,580 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,580 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,581 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,581 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,581 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,582 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,582 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,582 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,582 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,583 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,583 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,583 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,583 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,584 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,584 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,584 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,584 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,585 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,585 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,585 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,586 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,586 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,586 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,586 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,586 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,586 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,587 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,587 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,587 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,588 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,588 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,591 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,591 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,591 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,592 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,600 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,600 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,601 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,601 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,604 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,604 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,605 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,605 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 17:02:52,607 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 17:02:52,620 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 17:02:52,645 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 17:02:52,645 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 17:02:52,645 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 17:02:52,645 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 17:02:52,645 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 17:02:52,646 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 17:02:52,646 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 17:02:52,646 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 17:02:52,659 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 17:02:52,660 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 17:02:52,663 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 17:02:52,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-09 17:02:52,720 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-09 17:02:52,720 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 17:02:52,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 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. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 17:02:52,729 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 17:02:55,349 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-11-09 17:02:55,617 WARN L194 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-11-09 17:02:55,908 WARN L194 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2020-11-09 17:02:56,161 WARN L194 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-11-09 17:02:56,268 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 17:02:56,497 WARN L194 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-11-09 17:02:56,607 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 17:02:56,631 INFO L131 LiptonReduction]: Checked pairs total: 3181 [2020-11-09 17:02:56,631 INFO L133 LiptonReduction]: Total number of compositions: 74 [2020-11-09 17:02:56,638 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-09 17:02:56,666 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-09 17:02:56,668 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-09 17:02:56,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 17:02:56,676 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:02:56,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:02:56,677 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:02:56,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:02:56,684 INFO L82 PathProgramCache]: Analyzing trace with hash 2101373786, now seen corresponding path program 1 times [2020-11-09 17:02:56,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:02:56,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056724142] [2020-11-09 17:02:56,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:02:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:02:56,938 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 17:02:56,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056724142] [2020-11-09 17:02:56,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:02:56,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 17:02:56,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [427126890] [2020-11-09 17:02:56,942 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:02:56,945 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:02:56,960 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 17:02:56,960 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:02:56,965 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:02:56,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:02:56,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:02:56,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:02:56,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:02:56,986 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-09 17:02:57,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:02:57,023 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-09 17:02:57,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:02:57,025 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-09 17:02:57,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:02:57,041 INFO L225 Difference]: With dead ends: 282 [2020-11-09 17:02:57,041 INFO L226 Difference]: Without dead ends: 218 [2020-11-09 17:02:57,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:02:57,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-09 17:02:57,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-09 17:02:57,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-09 17:02:57,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-11-09 17:02:57,110 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-11-09 17:02:57,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:02:57,112 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-11-09 17:02:57,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:02:57,112 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-11-09 17:02:57,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 17:02:57,113 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:02:57,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:02:57,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 17:02:57,114 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:02:57,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:02:57,115 INFO L82 PathProgramCache]: Analyzing trace with hash 718076695, now seen corresponding path program 1 times [2020-11-09 17:02:57,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:02:57,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558502470] [2020-11-09 17:02:57,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:02:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:02:57,197 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 17:02:57,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558502470] [2020-11-09 17:02:57,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:02:57,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:02:57,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1115530831] [2020-11-09 17:02:57,198 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:02:57,199 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:02:57,202 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-11-09 17:02:57,202 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:02:57,212 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:02:57,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:02:57,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:02:57,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:02:57,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:02:57,215 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-11-09 17:02:57,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:02:57,242 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-11-09 17:02:57,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 17:02:57,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-09 17:02:57,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:02:57,244 INFO L225 Difference]: With dead ends: 242 [2020-11-09 17:02:57,245 INFO L226 Difference]: Without dead ends: 146 [2020-11-09 17:02:57,246 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 17:02:57,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-09 17:02:57,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-11-09 17:02:57,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-09 17:02:57,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-11-09 17:02:57,259 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-11-09 17:02:57,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:02:57,260 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-11-09 17:02:57,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:02:57,260 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-11-09 17:02:57,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 17:02:57,261 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:02:57,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:02:57,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 17:02:57,262 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:02:57,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:02:57,263 INFO L82 PathProgramCache]: Analyzing trace with hash -676988276, now seen corresponding path program 1 times [2020-11-09 17:02:57,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:02:57,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469792266] [2020-11-09 17:02:57,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:02:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:02:57,316 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 17:02:57,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469792266] [2020-11-09 17:02:57,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:02:57,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 17:02:57,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2098079615] [2020-11-09 17:02:57,318 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:02:57,319 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:02:57,324 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-11-09 17:02:57,324 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:02:57,387 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:02:57,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:02:57,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:02:57,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:02:57,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:02:57,389 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-11-09 17:02:57,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:02:57,396 INFO L93 Difference]: Finished difference Result 144 states and 355 transitions. [2020-11-09 17:02:57,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:02:57,397 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-09 17:02:57,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:02:57,399 INFO L225 Difference]: With dead ends: 144 [2020-11-09 17:02:57,399 INFO L226 Difference]: Without dead ends: 144 [2020-11-09 17:02:57,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:02:57,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-11-09 17:02:57,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-11-09 17:02:57,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-11-09 17:02:57,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-11-09 17:02:57,414 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 11 [2020-11-09 17:02:57,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:02:57,417 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-11-09 17:02:57,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:02:57,417 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-11-09 17:02:57,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 17:02:57,419 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:02:57,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:02:57,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 17:02:57,421 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:02:57,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:02:57,422 INFO L82 PathProgramCache]: Analyzing trace with hash 799592622, now seen corresponding path program 1 times [2020-11-09 17:02:57,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:02:57,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143555016] [2020-11-09 17:02:57,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:02:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:02:57,525 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 17:02:57,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143555016] [2020-11-09 17:02:57,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:02:57,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:02:57,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [7640776] [2020-11-09 17:02:57,526 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:02:57,529 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:02:57,534 INFO L252 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-11-09 17:02:57,534 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:02:57,784 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:02:57,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 17:02:57,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:02:57,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 17:02:57,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 17:02:57,787 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 4 states. [2020-11-09 17:02:57,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:02:57,805 INFO L93 Difference]: Finished difference Result 182 states and 430 transitions. [2020-11-09 17:02:57,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 17:02:57,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-09 17:02:57,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:02:57,807 INFO L225 Difference]: With dead ends: 182 [2020-11-09 17:02:57,807 INFO L226 Difference]: Without dead ends: 86 [2020-11-09 17:02:57,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 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 17:02:57,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-09 17:02:57,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-11-09 17:02:57,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-09 17:02:57,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 186 transitions. [2020-11-09 17:02:57,815 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 186 transitions. Word has length 12 [2020-11-09 17:02:57,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:02:57,815 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 186 transitions. [2020-11-09 17:02:57,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 17:02:57,816 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 186 transitions. [2020-11-09 17:02:57,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 17:02:57,818 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:02:57,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:02:57,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 17:02:57,818 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:02:57,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:02:57,819 INFO L82 PathProgramCache]: Analyzing trace with hash -492629862, now seen corresponding path program 1 times [2020-11-09 17:02:57,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:02:57,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253638000] [2020-11-09 17:02:57,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:02:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:02:57,935 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 17:02:57,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253638000] [2020-11-09 17:02:57,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:02:57,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:02:57,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [958559590] [2020-11-09 17:02:57,940 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:02:57,942 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:02:57,951 INFO L252 McrAutomatonBuilder]: Finished intersection with 31 states and 47 transitions. [2020-11-09 17:02:57,951 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:02:58,000 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:02:58,026 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:02:58,047 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:02:58,061 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:02:58,075 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:02:58,118 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2745#(not (= 3 ~__unbuffered_cnt~0))] [2020-11-09 17:02:58,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 17:02:58,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:02:58,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 17:02:58,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 17:02:58,121 INFO L87 Difference]: Start difference. First operand 86 states and 186 transitions. Second operand 5 states. [2020-11-09 17:02:58,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:02:58,178 INFO L93 Difference]: Finished difference Result 85 states and 168 transitions. [2020-11-09 17:02:58,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 17:02:58,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-09 17:02:58,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:02:58,180 INFO L225 Difference]: With dead ends: 85 [2020-11-09 17:02:58,180 INFO L226 Difference]: Without dead ends: 63 [2020-11-09 17:02:58,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-09 17:02:58,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-09 17:02:58,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-11-09 17:02:58,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-09 17:02:58,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 116 transitions. [2020-11-09 17:02:58,185 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 116 transitions. Word has length 13 [2020-11-09 17:02:58,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:02:58,186 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 116 transitions. [2020-11-09 17:02:58,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 17:02:58,186 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 116 transitions. [2020-11-09 17:02:58,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 17:02:58,187 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:02:58,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:02:58,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 17:02:58,187 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:02:58,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:02:58,188 INFO L82 PathProgramCache]: Analyzing trace with hash 493445752, now seen corresponding path program 1 times [2020-11-09 17:02:58,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:02:58,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634959323] [2020-11-09 17:02:58,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:02:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:02:58,245 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 17:02:58,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634959323] [2020-11-09 17:02:58,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:02:58,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 17:02:58,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1630880093] [2020-11-09 17:02:58,246 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:02:58,248 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:02:58,255 INFO L252 McrAutomatonBuilder]: Finished intersection with 43 states and 73 transitions. [2020-11-09 17:02:58,255 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:02:58,273 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 17:02:58,469 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [2967#(not (= 3 ~__unbuffered_cnt~0)), 2968#(not (= ~__unbuffered_cnt~0 2)), 2969#(not (= ~__unbuffered_cnt~0 1)), 2970#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 17:02:58,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-09 17:02:58,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:02:58,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-09 17:02:58,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-11-09 17:02:58,471 INFO L87 Difference]: Start difference. First operand 63 states and 116 transitions. Second operand 10 states. [2020-11-09 17:02:58,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:02:58,579 INFO L93 Difference]: Finished difference Result 60 states and 108 transitions. [2020-11-09 17:02:58,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 17:02:58,580 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-11-09 17:02:58,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:02:58,581 INFO L225 Difference]: With dead ends: 60 [2020-11-09 17:02:58,581 INFO L226 Difference]: Without dead ends: 54 [2020-11-09 17:02:58,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-11-09 17:02:58,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-09 17:02:58,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-09 17:02:58,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-09 17:02:58,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-11-09 17:02:58,589 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 15 [2020-11-09 17:02:58,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:02:58,590 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-11-09 17:02:58,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-09 17:02:58,592 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-11-09 17:02:58,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 17:02:58,593 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 17:02:58,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 17:02:58,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 17:02:58,594 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 17:02:58,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 17:02:58,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1724594669, now seen corresponding path program 1 times [2020-11-09 17:02:58,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 17:02:58,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930868559] [2020-11-09 17:02:58,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 17:02:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 17:02:58,628 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 17:02:58,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930868559] [2020-11-09 17:02:58,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 17:02:58,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 17:02:58,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [934554761] [2020-11-09 17:02:58,630 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 17:02:58,632 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 17:02:58,639 INFO L252 McrAutomatonBuilder]: Finished intersection with 46 states and 77 transitions. [2020-11-09 17:02:58,639 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 17:02:58,646 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 17:02:58,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 17:02:58,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 17:02:58,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 17:02:58,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:02:58,648 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 3 states. [2020-11-09 17:02:58,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 17:02:58,654 INFO L93 Difference]: Finished difference Result 53 states and 97 transitions. [2020-11-09 17:02:58,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 17:02:58,654 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-11-09 17:02:58,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 17:02:58,655 INFO L225 Difference]: With dead ends: 53 [2020-11-09 17:02:58,655 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 17:02:58,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 17:02:58,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 17:02:58,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 17:02:58,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 17:02:58,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 17:02:58,656 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-09 17:02:58,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 17:02:58,656 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 17:02:58,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 17:02:58,657 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 17:02:58,657 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 17:02:58,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 17:02:58,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:02:58 BasicIcfg [2020-11-09 17:02:58,660 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 17:02:58,662 INFO L168 Benchmark]: Toolchain (without parser) took 7413.29 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 124.3 MB in the beginning and 82.3 MB in the end (delta: 42.0 MB). Peak memory consumption was 110.2 MB. Max. memory is 8.0 GB. [2020-11-09 17:02:58,662 INFO L168 Benchmark]: CDTParser took 0.73 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 17:02:58,663 INFO L168 Benchmark]: CACSL2BoogieTranslator took 700.30 ms. Allocated memory is still 151.0 MB. Free memory was 123.6 MB in the beginning and 127.3 MB in the end (delta: -3.7 MB). Peak memory consumption was 30.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:02:58,664 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.54 ms. Allocated memory is still 151.0 MB. Free memory was 127.3 MB in the beginning and 125.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 17:02:58,665 INFO L168 Benchmark]: Boogie Preprocessor took 30.10 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 124.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:02:58,666 INFO L168 Benchmark]: RCFGBuilder took 461.78 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 101.7 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 17:02:58,667 INFO L168 Benchmark]: TraceAbstraction took 6154.49 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 101.7 MB in the beginning and 82.3 MB in the end (delta: 19.4 MB). Peak memory consumption was 86.5 MB. Max. memory is 8.0 GB. [2020-11-09 17:02:58,671 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 700.30 ms. Allocated memory is still 151.0 MB. Free memory was 123.6 MB in the beginning and 127.3 MB in the end (delta: -3.7 MB). Peak memory consumption was 30.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 49.54 ms. Allocated memory is still 151.0 MB. Free memory was 127.3 MB in the beginning and 125.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.10 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 124.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 461.78 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 101.7 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6154.49 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 101.7 MB in the beginning and 82.3 MB in the end (delta: 19.4 MB). Peak memory consumption was 86.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 814 VarBasedMoverChecksPositive, 30 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 59 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.9s, 86 PlacesBefore, 31 PlacesAfterwards, 79 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 2 ChoiceCompositions, 74 TotalNumberOfCompositions, 3181 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 118 SDtfs, 117 SDslu, 159 SDs, 0 SdLazy, 99 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 92 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 2374 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...