/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-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 15:31:33,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 15:31:33,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 15:31:33,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 15:31:33,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 15:31:33,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 15:31:33,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 15:31:33,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 15:31:33,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 15:31:33,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 15:31:33,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 15:31:33,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 15:31:33,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 15:31:33,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 15:31:33,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 15:31:33,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 15:31:33,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 15:31:33,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 15:31:33,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 15:31:33,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 15:31:33,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 15:31:33,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 15:31:33,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 15:31:33,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 15:31:33,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 15:31:33,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 15:31:33,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 15:31:33,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 15:31:33,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 15:31:33,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 15:31:33,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 15:31:33,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 15:31:33,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 15:31:33,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 15:31:33,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 15:31:33,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 15:31:33,556 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-WP.epf [2020-11-09 15:31:33,585 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 15:31:33,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 15:31:33,587 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 15:31:33,587 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 15:31:33,588 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 15:31:33,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 15:31:33,588 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 15:31:33,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 15:31:33,589 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 15:31:33,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 15:31:33,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 15:31:33,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 15:31:33,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 15:31:33,590 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 15:31:33,591 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 15:31:33,591 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 15:31:33,591 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 15:31:33,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 15:31:33,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 15:31:33,592 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 15:31:33,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 15:31:33,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 15:31:33,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 15:31:33,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 15:31:33,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 15:31:33,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 15:31:33,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 15:31:33,594 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 15:31:33,594 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 15:31:33,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 15:31:33,595 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 15:31:34,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 15:31:34,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 15:31:34,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 15:31:34,090 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 15:31:34,090 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 15:31:34,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i [2020-11-09 15:31:34,181 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f5aaba81/05dca698034f43809d139540524ea47e/FLAG513a68031 [2020-11-09 15:31:34,998 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 15:31:34,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.oepc.i [2020-11-09 15:31:35,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f5aaba81/05dca698034f43809d139540524ea47e/FLAG513a68031 [2020-11-09 15:31:35,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f5aaba81/05dca698034f43809d139540524ea47e [2020-11-09 15:31:35,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 15:31:35,254 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 15:31:35,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 15:31:35,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 15:31:35,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 15:31:35,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:31:35" (1/1) ... [2020-11-09 15:31:35,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44cb5273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:31:35, skipping insertion in model container [2020-11-09 15:31:35,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:31:35" (1/1) ... [2020-11-09 15:31:35,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 15:31:35,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 15:31:35,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:31:35,838 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 15:31:35,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:31:36,053 INFO L208 MainTranslator]: Completed translation [2020-11-09 15:31:36,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:31:36 WrapperNode [2020-11-09 15:31:36,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 15:31:36,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 15:31:36,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 15:31:36,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 15:31:36,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:31:36" (1/1) ... [2020-11-09 15:31:36,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:31:36" (1/1) ... [2020-11-09 15:31:36,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 15:31:36,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 15:31:36,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 15:31:36,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 15:31:36,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:31:36" (1/1) ... [2020-11-09 15:31:36,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:31:36" (1/1) ... [2020-11-09 15:31:36,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:31:36" (1/1) ... [2020-11-09 15:31:36,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:31:36" (1/1) ... [2020-11-09 15:31:36,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:31:36" (1/1) ... [2020-11-09 15:31:36,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:31:36" (1/1) ... [2020-11-09 15:31:36,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:31:36" (1/1) ... [2020-11-09 15:31:36,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 15:31:36,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 15:31:36,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 15:31:36,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 15:31:36,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:31:36" (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 15:31:36,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 15:31:36,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 15:31:36,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 15:31:36,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 15:31:36,313 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 15:31:36,313 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 15:31:36,314 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 15:31:36,314 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 15:31:36,315 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 15:31:36,315 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 15:31:36,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 15:31:36,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 15:31:36,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 15:31:36,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 15:31:36,318 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 15:31:36,799 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 15:31:36,799 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 15:31:36,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:31:36 BoogieIcfgContainer [2020-11-09 15:31:36,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 15:31:36,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 15:31:36,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 15:31:36,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 15:31:36,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:31:35" (1/3) ... [2020-11-09 15:31:36,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786b58bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:31:36, skipping insertion in model container [2020-11-09 15:31:36,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:31:36" (2/3) ... [2020-11-09 15:31:36,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786b58bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:31:36, skipping insertion in model container [2020-11-09 15:31:36,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:31:36" (3/3) ... [2020-11-09 15:31:36,810 INFO L111 eAbstractionObserver]: Analyzing ICFG safe001_tso.oepc.i [2020-11-09 15:31:36,826 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 15:31:36,826 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 15:31:36,830 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 15:31:36,831 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 15:31:36,860 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,861 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,861 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,861 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,862 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,862 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,862 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,862 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,863 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,863 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,863 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,863 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,864 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,864 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,864 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,865 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,865 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,865 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,865 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,865 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,866 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,866 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,866 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,866 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,867 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,867 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,867 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,868 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,868 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,868 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,868 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,868 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,869 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,869 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,870 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,870 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,872 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,873 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,873 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,873 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,880 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,881 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,881 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,881 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,887 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,887 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,888 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,888 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:36,890 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 15:31:36,902 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 15:31:36,926 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:31:36,926 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:31:36,926 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:31:36,926 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:31:36,927 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:31:36,927 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:31:36,927 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:31:36,927 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:31:36,940 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:31:36,941 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-09 15:31:36,945 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-09 15:31:36,947 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-09 15:31:37,035 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-09 15:31:37,036 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 15:31:37,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 15:31:37,049 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 15:31:39,297 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-11-09 15:31:39,989 WARN L194 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-09 15:31:40,234 WARN L194 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-09 15:31:40,354 INFO L131 LiptonReduction]: Checked pairs total: 3163 [2020-11-09 15:31:40,355 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-11-09 15:31:40,360 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-09 15:31:40,390 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-09 15:31:40,392 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-09 15:31:40,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 15:31:40,400 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:31:40,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:31:40,401 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:31:40,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:31:40,407 INFO L82 PathProgramCache]: Analyzing trace with hash 2115134997, now seen corresponding path program 1 times [2020-11-09 15:31:40,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:31:40,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561985577] [2020-11-09 15:31:40,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:31:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:31:40,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:31:40,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561985577] [2020-11-09 15:31:40,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:31:40,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:31:40,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [100101360] [2020-11-09 15:31:40,695 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:31:40,698 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:31:40,714 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 15:31:40,714 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:31:40,720 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:31:40,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-09 15:31:40,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:31:40,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-09 15:31:40,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 15:31:40,741 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-09 15:31:40,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:31:40,773 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-09 15:31:40,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-09 15:31:40,776 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-09 15:31:40,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:31:40,803 INFO L225 Difference]: With dead ends: 362 [2020-11-09 15:31:40,803 INFO L226 Difference]: Without dead ends: 298 [2020-11-09 15:31:40,805 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 15:31:40,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-09 15:31:40,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-09 15:31:40,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-09 15:31:40,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-09 15:31:40,892 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-09 15:31:40,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:31:40,894 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-09 15:31:40,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-09 15:31:40,894 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-09 15:31:40,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 15:31:40,896 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:31:40,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:31:40,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 15:31:40,896 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:31:40,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:31:40,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1144664430, now seen corresponding path program 1 times [2020-11-09 15:31:40,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:31:40,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034322844] [2020-11-09 15:31:40,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:31:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:31:40,987 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 15:31:40,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034322844] [2020-11-09 15:31:40,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:31:40,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:31:40,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [706913867] [2020-11-09 15:31:40,989 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:31:40,990 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:31:40,991 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-11-09 15:31:40,992 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:31:40,992 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:31:40,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:31:40,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:31:40,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:31:40,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:31:40,995 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-11-09 15:31:41,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:31:41,018 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-11-09 15:31:41,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:31:41,019 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-09 15:31:41,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:31:41,021 INFO L225 Difference]: With dead ends: 217 [2020-11-09 15:31:41,022 INFO L226 Difference]: Without dead ends: 217 [2020-11-09 15:31:41,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:31:41,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-11-09 15:31:41,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-11-09 15:31:41,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-11-09 15:31:41,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-11-09 15:31:41,042 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-11-09 15:31:41,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:31:41,042 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-11-09 15:31:41,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:31:41,043 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-11-09 15:31:41,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 15:31:41,044 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:31:41,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:31:41,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 15:31:41,045 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:31:41,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:31:41,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1523104206, now seen corresponding path program 1 times [2020-11-09 15:31:41,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:31:41,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731972572] [2020-11-09 15:31:41,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:31:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:31:41,112 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 15:31:41,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731972572] [2020-11-09 15:31:41,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:31:41,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:31:41,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [115304873] [2020-11-09 15:31:41,114 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:31:41,115 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:31:41,122 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 36 transitions. [2020-11-09 15:31:41,122 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:31:41,281 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2430#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 15:31:41,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 15:31:41,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:31:41,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 15:31:41,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:31:41,283 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 5 states. [2020-11-09 15:31:41,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:31:41,321 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-11-09 15:31:41,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:31:41,321 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-09 15:31:41,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:31:41,322 INFO L225 Difference]: With dead ends: 136 [2020-11-09 15:31:41,323 INFO L226 Difference]: Without dead ends: 136 [2020-11-09 15:31:41,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:31:41,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-09 15:31:41,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-11-09 15:31:41,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-09 15:31:41,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-11-09 15:31:41,346 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-11-09 15:31:41,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:31:41,347 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-11-09 15:31:41,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 15:31:41,349 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-11-09 15:31:41,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 15:31:41,351 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:31:41,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:31:41,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 15:31:41,352 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:31:41,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:31:41,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1616090199, now seen corresponding path program 1 times [2020-11-09 15:31:41,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:31:41,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393014428] [2020-11-09 15:31:41,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:31:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:31:41,481 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 15:31:41,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393014428] [2020-11-09 15:31:41,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:31:41,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 15:31:41,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [266798720] [2020-11-09 15:31:41,483 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:31:41,484 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:31:41,490 INFO L252 McrAutomatonBuilder]: Finished intersection with 49 states and 85 transitions. [2020-11-09 15:31:41,490 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:31:41,627 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2844#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 15:31:41,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 15:31:41,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:31:41,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 15:31:41,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-09 15:31:41,629 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 6 states. [2020-11-09 15:31:41,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:31:41,663 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-11-09 15:31:41,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:31:41,663 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-09 15:31:41,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:31:41,664 INFO L225 Difference]: With dead ends: 109 [2020-11-09 15:31:41,665 INFO L226 Difference]: Without dead ends: 109 [2020-11-09 15:31:41,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-09 15:31:41,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-09 15:31:41,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-11-09 15:31:41,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-09 15:31:41,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-11-09 15:31:41,671 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-11-09 15:31:41,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:31:41,672 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-11-09 15:31:41,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 15:31:41,672 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-11-09 15:31:41,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 15:31:41,673 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:31:41,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:31:41,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 15:31:41,674 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:31:41,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:31:41,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1930604432, now seen corresponding path program 1 times [2020-11-09 15:31:41,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:31:41,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503691308] [2020-11-09 15:31:41,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:31:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:31:41,748 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 15:31:41,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503691308] [2020-11-09 15:31:41,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:31:41,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:31:41,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1485159366] [2020-11-09 15:31:41,752 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:31:41,755 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:31:41,767 INFO L252 McrAutomatonBuilder]: Finished intersection with 61 states and 105 transitions. [2020-11-09 15:31:41,767 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:31:41,806 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:31:41,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:31:41,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:31:41,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:31:41,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:31:41,808 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 4 states. [2020-11-09 15:31:41,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:31:41,832 INFO L93 Difference]: Finished difference Result 127 states and 273 transitions. [2020-11-09 15:31:41,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:31:41,832 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-09 15:31:41,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:31:41,833 INFO L225 Difference]: With dead ends: 127 [2020-11-09 15:31:41,833 INFO L226 Difference]: Without dead ends: 93 [2020-11-09 15:31:41,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 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 15:31:41,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-09 15:31:41,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-11-09 15:31:41,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-09 15:31:41,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 199 transitions. [2020-11-09 15:31:41,839 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 199 transitions. Word has length 18 [2020-11-09 15:31:41,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:31:41,839 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 199 transitions. [2020-11-09 15:31:41,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:31:41,839 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 199 transitions. [2020-11-09 15:31:41,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 15:31:41,841 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:31:41,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:31:41,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 15:31:41,841 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:31:41,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:31:41,842 INFO L82 PathProgramCache]: Analyzing trace with hash -17726670, now seen corresponding path program 2 times [2020-11-09 15:31:41,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:31:41,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545820955] [2020-11-09 15:31:41,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:31:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:31:41,933 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 15:31:41,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545820955] [2020-11-09 15:31:41,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:31:41,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:31:41,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [786023890] [2020-11-09 15:31:41,935 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:31:41,937 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:31:41,945 INFO L252 McrAutomatonBuilder]: Finished intersection with 61 states and 104 transitions. [2020-11-09 15:31:41,945 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:31:42,040 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:31:42,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 15:31:42,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:31:42,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 15:31:42,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:31:42,042 INFO L87 Difference]: Start difference. First operand 93 states and 199 transitions. Second operand 5 states. [2020-11-09 15:31:42,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:31:42,076 INFO L93 Difference]: Finished difference Result 131 states and 273 transitions. [2020-11-09 15:31:42,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:31:42,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-09 15:31:42,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:31:42,077 INFO L225 Difference]: With dead ends: 131 [2020-11-09 15:31:42,077 INFO L226 Difference]: Without dead ends: 63 [2020-11-09 15:31:42,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:31:42,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-09 15:31:42,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-11-09 15:31:42,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-09 15:31:42,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 121 transitions. [2020-11-09 15:31:42,082 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 121 transitions. Word has length 18 [2020-11-09 15:31:42,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:31:42,082 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 121 transitions. [2020-11-09 15:31:42,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 15:31:42,082 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 121 transitions. [2020-11-09 15:31:42,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 15:31:42,083 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:31:42,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:31:42,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 15:31:42,084 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:31:42,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:31:42,084 INFO L82 PathProgramCache]: Analyzing trace with hash 46641744, now seen corresponding path program 3 times [2020-11-09 15:31:42,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:31:42,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889057468] [2020-11-09 15:31:42,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:31:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:31:42,168 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 15:31:42,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889057468] [2020-11-09 15:31:42,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:31:42,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:31:42,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [932072601] [2020-11-09 15:31:42,169 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:31:42,171 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:31:42,177 INFO L252 McrAutomatonBuilder]: Finished intersection with 29 states and 36 transitions. [2020-11-09 15:31:42,177 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:31:42,183 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:31:42,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:31:42,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:31:42,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:31:42,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:31:42,186 INFO L87 Difference]: Start difference. First operand 63 states and 121 transitions. Second operand 4 states. [2020-11-09 15:31:42,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:31:42,205 INFO L93 Difference]: Finished difference Result 62 states and 120 transitions. [2020-11-09 15:31:42,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:31:42,205 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-09 15:31:42,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:31:42,206 INFO L225 Difference]: With dead ends: 62 [2020-11-09 15:31:42,206 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 15:31:42,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 15:31:42,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 15:31:42,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 15:31:42,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 15:31:42,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 15:31:42,207 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-09 15:31:42,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:31:42,207 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 15:31:42,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:31:42,208 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 15:31:42,208 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 15:31:42,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 15:31:42,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 03:31:42 BasicIcfg [2020-11-09 15:31:42,212 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 15:31:42,214 INFO L168 Benchmark]: Toolchain (without parser) took 6965.46 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 126.9 MB in the beginning and 105.3 MB in the end (delta: 21.6 MB). Peak memory consumption was 53.8 MB. Max. memory is 8.0 GB. [2020-11-09 15:31:42,214 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory is still 86.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 15:31:42,215 INFO L168 Benchmark]: CACSL2BoogieTranslator took 795.76 ms. Allocated memory is still 153.1 MB. Free memory was 126.1 MB in the beginning and 94.8 MB in the end (delta: 31.2 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. [2020-11-09 15:31:42,216 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.00 ms. Allocated memory is still 153.1 MB. Free memory was 94.8 MB in the beginning and 93.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 15:31:42,217 INFO L168 Benchmark]: Boogie Preprocessor took 61.67 ms. Allocated memory is still 153.1 MB. Free memory was 93.0 MB in the beginning and 91.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:31:42,217 INFO L168 Benchmark]: RCFGBuilder took 595.06 ms. Allocated memory is still 153.1 MB. Free memory was 91.5 MB in the beginning and 120.0 MB in the end (delta: -28.5 MB). Peak memory consumption was 11.3 MB. Max. memory is 8.0 GB. [2020-11-09 15:31:42,219 INFO L168 Benchmark]: TraceAbstraction took 5408.87 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 120.0 MB in the beginning and 105.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 45.6 MB. Max. memory is 8.0 GB. [2020-11-09 15:31:42,222 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory is still 86.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 795.76 ms. Allocated memory is still 153.1 MB. Free memory was 126.1 MB in the beginning and 94.8 MB in the end (delta: 31.2 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 87.00 ms. Allocated memory is still 153.1 MB. Free memory was 94.8 MB in the beginning and 93.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 61.67 ms. Allocated memory is still 153.1 MB. Free memory was 93.0 MB in the beginning and 91.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 595.06 ms. Allocated memory is still 153.1 MB. Free memory was 91.5 MB in the beginning and 120.0 MB in the end (delta: -28.5 MB). Peak memory consumption was 11.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5408.87 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 120.0 MB in the beginning and 105.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 45.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 778 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 58 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.4s, 85 PlacesBefore, 32 PlacesAfterwards, 78 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 3163 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 124 SDtfs, 66 SDslu, 177 SDs, 0 SdLazy, 69 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 95 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 2862 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...