/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-New_States.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 12:21:25,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 12:21:25,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 12:21:26,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 12:21:26,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 12:21:26,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 12:21:26,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 12:21:26,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 12:21:26,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 12:21:26,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 12:21:26,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 12:21:26,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 12:21:26,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 12:21:26,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 12:21:26,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 12:21:26,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 12:21:26,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 12:21:26,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 12:21:26,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 12:21:26,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 12:21:26,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 12:21:26,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 12:21:26,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 12:21:26,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 12:21:26,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-12 12:21:26,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 12:21:26,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 12:21:26,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 12:21:26,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 12:21:26,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 12:21:26,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 12:21:26,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 12:21:26,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 12:21:26,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 12:21:26,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 12:21:26,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 12:21:26,073 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-New_States.epf [2020-11-12 12:21:26,100 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 12:21:26,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 12:21:26,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 12:21:26,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 12:21:26,103 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 12:21:26,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 12:21:26,104 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 12:21:26,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 12:21:26,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 12:21:26,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 12:21:26,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 12:21:26,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 12:21:26,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 12:21:26,105 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 12:21:26,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 12:21:26,106 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 12:21:26,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 12:21:26,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 12:21:26,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 12:21:26,106 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 12:21:26,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 12:21:26,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 12:21:26,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 12:21:26,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 12:21:26,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 12:21:26,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 12:21:26,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 12:21:26,108 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 12:21:26,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 12:21:26,109 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 12:21:26,109 INFO L138 SettingsManager]: * Sleep set reduction in concurrent analysis=NEW_STATES 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 12:21:26,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 12:21:26,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 12:21:26,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 12:21:26,508 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 12:21:26,508 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 12:21:26,510 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i [2020-11-12 12:21:26,592 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/419d99977/b3b3e307e1e048229dc96ba33d767baf/FLAG0d517ec3e [2020-11-12 12:21:27,263 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 12:21:27,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i [2020-11-12 12:21:27,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/419d99977/b3b3e307e1e048229dc96ba33d767baf/FLAG0d517ec3e [2020-11-12 12:21:27,587 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/419d99977/b3b3e307e1e048229dc96ba33d767baf [2020-11-12 12:21:27,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 12:21:27,600 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 12:21:27,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 12:21:27,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 12:21:27,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 12:21:27,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:21:27" (1/1) ... [2020-11-12 12:21:27,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cf3842e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:27, skipping insertion in model container [2020-11-12 12:21:27,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:21:27" (1/1) ... [2020-11-12 12:21:27,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 12:21:27,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 12:21:28,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:21:28,097 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 12:21:28,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:21:28,370 INFO L208 MainTranslator]: Completed translation [2020-11-12 12:21:28,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:28 WrapperNode [2020-11-12 12:21:28,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 12:21:28,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 12:21:28,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 12:21:28,373 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 12:21:28,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:28" (1/1) ... [2020-11-12 12:21:28,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:28" (1/1) ... [2020-11-12 12:21:28,460 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 12:21:28,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 12:21:28,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 12:21:28,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 12:21:28,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:28" (1/1) ... [2020-11-12 12:21:28,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:28" (1/1) ... [2020-11-12 12:21:28,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:28" (1/1) ... [2020-11-12 12:21:28,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:28" (1/1) ... [2020-11-12 12:21:28,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:28" (1/1) ... [2020-11-12 12:21:28,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:28" (1/1) ... [2020-11-12 12:21:28,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:28" (1/1) ... [2020-11-12 12:21:28,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 12:21:28,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 12:21:28,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 12:21:28,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 12:21:28,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:28" (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 [2020-11-12 12:21:28,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 12:21:28,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 12:21:28,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 12:21:28,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 12:21:28,619 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-12 12:21:28,619 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-12 12:21:28,620 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-12 12:21:28,620 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-12 12:21:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-12 12:21:28,621 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-12 12:21:28,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 12:21:28,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 12:21:28,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 12:21:28,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 12:21:28,624 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 12:21:29,078 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 12:21:29,078 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 12:21:29,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:21:29 BoogieIcfgContainer [2020-11-12 12:21:29,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 12:21:29,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 12:21:29,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 12:21:29,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 12:21:29,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:21:27" (1/3) ... [2020-11-12 12:21:29,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b25dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:21:29, skipping insertion in model container [2020-11-12 12:21:29,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:21:28" (2/3) ... [2020-11-12 12:21:29,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b25dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:21:29, skipping insertion in model container [2020-11-12 12:21:29,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:21:29" (3/3) ... [2020-11-12 12:21:29,090 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_tso.oepc.i [2020-11-12 12:21:29,105 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 12:21:29,106 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 12:21:29,110 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 12:21:29,111 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 12:21:29,141 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,141 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,141 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,141 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,142 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,142 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,142 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,142 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,143 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,143 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,143 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,143 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,144 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,144 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,144 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,144 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,145 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,145 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,145 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,145 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,146 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,146 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,146 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,146 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,147 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,147 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,147 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,147 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,148 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,148 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,148 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,148 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,149 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,149 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,149 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,150 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,152 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,153 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,153 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,153 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,159 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,159 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,159 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,160 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,162 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,162 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,163 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,163 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:21:29,165 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 12:21:29,178 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-12 12:21:29,202 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 12:21:29,203 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 12:21:29,203 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 12:21:29,203 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 12:21:29,203 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 12:21:29,203 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 12:21:29,204 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 12:21:29,204 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 12:21:29,217 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 171 flow [2020-11-12 12:21:30,144 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8448 states, 8446 states have (on average 3.5893914278948613) internal successors, (30316), 8447 states have internal predecessors, (30316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:31,029 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 881ms [2020-11-12 12:21:31,058 WARN L456 BasicCegarLoop]: Sleep set: input automaton has 8448 states, 8446 states have (on average 3.5893914278948613) internal successors, (30316), 8447 states have internal predecessors, (30316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:31,145 WARN L457 BasicCegarLoop]: Sleep set: output automaton has 28769 states, 26200 states have (on average 1.2112213740458015) internal successors, (31734), 28768 states have internal predecessors, (31734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:31,175 INFO L276 IsEmpty]: Start isEmpty. Operand has 28769 states, 26200 states have (on average 1.2112213740458015) internal successors, (31734), 28768 states have internal predecessors, (31734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:31,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-12 12:21:31,207 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:21:31,208 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:21:31,208 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:21:31,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:21:31,215 INFO L82 PathProgramCache]: Analyzing trace with hash 31988960, now seen corresponding path program 1 times [2020-11-12 12:21:31,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:21:31,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834643039] [2020-11-12 12:21:31,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:21:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:21:31,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:21:31,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834643039] [2020-11-12 12:21:31,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:21:31,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:21:31,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504829544] [2020-11-12 12:21:31,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:21:31,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:21:31,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:21:31,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:21:31,717 INFO L87 Difference]: Start difference. First operand has 28769 states, 26200 states have (on average 1.2112213740458015) internal successors, (31734), 28768 states have internal predecessors, (31734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:31,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:21:31,970 INFO L93 Difference]: Finished difference Result 12001 states and 14450 transitions. [2020-11-12 12:21:31,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:21:31,972 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2020-11-12 12:21:31,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:21:32,018 INFO L225 Difference]: With dead ends: 12001 [2020-11-12 12:21:32,018 INFO L226 Difference]: Without dead ends: 3287 [2020-11-12 12:21:32,020 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:21:32,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3287 states. [2020-11-12 12:21:32,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3287 to 3287. [2020-11-12 12:21:32,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3287 states, 3077 states have (on average 1.3672408189795255) internal successors, (4207), 3286 states have internal predecessors, (4207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:32,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3287 states to 3287 states and 4207 transitions. [2020-11-12 12:21:32,285 INFO L78 Accepts]: Start accepts. Automaton has 3287 states and 4207 transitions. Word has length 42 [2020-11-12 12:21:32,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:21:32,286 INFO L481 AbstractCegarLoop]: Abstraction has 3287 states and 4207 transitions. [2020-11-12 12:21:32,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:32,291 INFO L276 IsEmpty]: Start isEmpty. Operand 3287 states and 4207 transitions. [2020-11-12 12:21:32,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-12 12:21:32,299 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:21:32,299 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:21:32,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 12:21:32,308 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:21:32,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:21:32,310 INFO L82 PathProgramCache]: Analyzing trace with hash -95647071, now seen corresponding path program 1 times [2020-11-12 12:21:32,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:21:32,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877229324] [2020-11-12 12:21:32,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:21:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:21:32,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:21:32,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877229324] [2020-11-12 12:21:32,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:21:32,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:21:32,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353035777] [2020-11-12 12:21:32,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:21:32,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:21:32,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:21:32,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:21:32,567 INFO L87 Difference]: Start difference. First operand 3287 states and 4207 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:32,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:21:32,790 INFO L93 Difference]: Finished difference Result 3909 states and 5004 transitions. [2020-11-12 12:21:32,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 12:21:32,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2020-11-12 12:21:32,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:21:32,802 INFO L225 Difference]: With dead ends: 3909 [2020-11-12 12:21:32,802 INFO L226 Difference]: Without dead ends: 1698 [2020-11-12 12:21:32,803 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-12 12:21:32,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2020-11-12 12:21:32,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1698. [2020-11-12 12:21:32,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1698 states, 1578 states have (on average 1.291508238276299) internal successors, (2038), 1697 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:32,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 2038 transitions. [2020-11-12 12:21:32,947 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 2038 transitions. Word has length 44 [2020-11-12 12:21:32,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:21:32,947 INFO L481 AbstractCegarLoop]: Abstraction has 1698 states and 2038 transitions. [2020-11-12 12:21:32,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:32,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 2038 transitions. [2020-11-12 12:21:32,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-12 12:21:32,951 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:21:32,951 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:21:32,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 12:21:32,952 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:21:32,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:21:32,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1249634671, now seen corresponding path program 1 times [2020-11-12 12:21:32,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:21:32,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392061482] [2020-11-12 12:21:32,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:21:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:21:33,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:21:33,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392061482] [2020-11-12 12:21:33,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:21:33,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:21:33,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84495936] [2020-11-12 12:21:33,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:21:33,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:21:33,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:21:33,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:21:33,159 INFO L87 Difference]: Start difference. First operand 1698 states and 2038 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:33,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:21:33,353 INFO L93 Difference]: Finished difference Result 2225 states and 2722 transitions. [2020-11-12 12:21:33,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 12:21:33,353 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2020-11-12 12:21:33,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:21:33,359 INFO L225 Difference]: With dead ends: 2225 [2020-11-12 12:21:33,360 INFO L226 Difference]: Without dead ends: 1087 [2020-11-12 12:21:33,361 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-12 12:21:33,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2020-11-12 12:21:33,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1087. [2020-11-12 12:21:33,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1007 states have (on average 1.2452830188679245) internal successors, (1254), 1086 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:33,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1254 transitions. [2020-11-12 12:21:33,388 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1254 transitions. Word has length 47 [2020-11-12 12:21:33,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:21:33,390 INFO L481 AbstractCegarLoop]: Abstraction has 1087 states and 1254 transitions. [2020-11-12 12:21:33,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:33,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1254 transitions. [2020-11-12 12:21:33,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-12 12:21:33,392 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:21:33,392 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:21:33,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 12:21:33,393 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:21:33,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:21:33,394 INFO L82 PathProgramCache]: Analyzing trace with hash 994042126, now seen corresponding path program 1 times [2020-11-12 12:21:33,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:21:33,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564975559] [2020-11-12 12:21:33,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:21:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:21:33,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:21:33,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564975559] [2020-11-12 12:21:33,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:21:33,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:21:33,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488739811] [2020-11-12 12:21:33,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:21:33,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:21:33,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:21:33,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:21:33,565 INFO L87 Difference]: Start difference. First operand 1087 states and 1254 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:33,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:21:33,705 INFO L93 Difference]: Finished difference Result 1149 states and 1299 transitions. [2020-11-12 12:21:33,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-12 12:21:33,706 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2020-11-12 12:21:33,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:21:33,712 INFO L225 Difference]: With dead ends: 1149 [2020-11-12 12:21:33,712 INFO L226 Difference]: Without dead ends: 1050 [2020-11-12 12:21:33,713 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-11-12 12:21:33,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2020-11-12 12:21:33,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1050. [2020-11-12 12:21:33,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 972 states have (on average 1.2345679012345678) internal successors, (1200), 1049 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:33,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1200 transitions. [2020-11-12 12:21:33,738 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1200 transitions. Word has length 49 [2020-11-12 12:21:33,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:21:33,739 INFO L481 AbstractCegarLoop]: Abstraction has 1050 states and 1200 transitions. [2020-11-12 12:21:33,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:33,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1200 transitions. [2020-11-12 12:21:33,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-12 12:21:33,741 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:21:33,742 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:21:33,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 12:21:33,742 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:21:33,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:21:33,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1503390736, now seen corresponding path program 1 times [2020-11-12 12:21:33,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:21:33,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905152057] [2020-11-12 12:21:33,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:21:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:21:33,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:21:33,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905152057] [2020-11-12 12:21:33,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:21:33,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:21:33,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993323007] [2020-11-12 12:21:33,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:21:33,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:21:33,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:21:33,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:21:33,919 INFO L87 Difference]: Start difference. First operand 1050 states and 1200 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:34,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:21:34,060 INFO L93 Difference]: Finished difference Result 961 states and 1062 transitions. [2020-11-12 12:21:34,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:21:34,061 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2020-11-12 12:21:34,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:21:34,064 INFO L225 Difference]: With dead ends: 961 [2020-11-12 12:21:34,065 INFO L226 Difference]: Without dead ends: 830 [2020-11-12 12:21:34,065 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-11-12 12:21:34,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2020-11-12 12:21:34,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2020-11-12 12:21:34,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 767 states have (on average 1.1786179921773141) internal successors, (904), 829 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:34,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 904 transitions. [2020-11-12 12:21:34,083 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 904 transitions. Word has length 50 [2020-11-12 12:21:34,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:21:34,084 INFO L481 AbstractCegarLoop]: Abstraction has 830 states and 904 transitions. [2020-11-12 12:21:34,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:34,084 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 904 transitions. [2020-11-12 12:21:34,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-12 12:21:34,086 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:21:34,087 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:21:34,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 12:21:34,087 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:21:34,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:21:34,088 INFO L82 PathProgramCache]: Analyzing trace with hash 483719496, now seen corresponding path program 1 times [2020-11-12 12:21:34,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:21:34,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471637125] [2020-11-12 12:21:34,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:21:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:21:34,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:21:34,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471637125] [2020-11-12 12:21:34,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:21:34,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-12 12:21:34,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342468083] [2020-11-12 12:21:34,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 12:21:34,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:21:34,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 12:21:34,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-12 12:21:34,242 INFO L87 Difference]: Start difference. First operand 830 states and 904 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:34,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:21:34,424 INFO L93 Difference]: Finished difference Result 506 states and 523 transitions. [2020-11-12 12:21:34,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 12:21:34,425 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2020-11-12 12:21:34,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:21:34,427 INFO L225 Difference]: With dead ends: 506 [2020-11-12 12:21:34,427 INFO L226 Difference]: Without dead ends: 374 [2020-11-12 12:21:34,428 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-11-12 12:21:34,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2020-11-12 12:21:34,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2020-11-12 12:21:34,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 347 states have (on average 1.07492795389049) internal successors, (373), 373 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:34,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 373 transitions. [2020-11-12 12:21:34,436 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 373 transitions. Word has length 51 [2020-11-12 12:21:34,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:21:34,437 INFO L481 AbstractCegarLoop]: Abstraction has 374 states and 373 transitions. [2020-11-12 12:21:34,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:34,437 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 373 transitions. [2020-11-12 12:21:34,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-12 12:21:34,438 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:21:34,438 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:21:34,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 12:21:34,439 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:21:34,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:21:34,439 INFO L82 PathProgramCache]: Analyzing trace with hash -320762935, now seen corresponding path program 1 times [2020-11-12 12:21:34,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:21:34,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347712162] [2020-11-12 12:21:34,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:21:34,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:21:34,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:21:34,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347712162] [2020-11-12 12:21:34,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:21:34,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:21:34,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081754523] [2020-11-12 12:21:34,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:21:34,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:21:34,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:21:34,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:21:34,550 INFO L87 Difference]: Start difference. First operand 374 states and 373 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:34,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:21:34,626 INFO L93 Difference]: Finished difference Result 266 states and 265 transitions. [2020-11-12 12:21:34,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 12:21:34,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-11-12 12:21:34,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:21:34,627 INFO L225 Difference]: With dead ends: 266 [2020-11-12 12:21:34,627 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 12:21:34,628 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:21:34,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 12:21:34,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 12:21:34,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:34,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 12:21:34,629 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2020-11-12 12:21:34,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:21:34,629 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 12:21:34,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:21:34,629 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 12:21:34,629 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 12:21:34,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 12:21:34,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:21:34 BasicIcfg [2020-11-12 12:21:34,634 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 12:21:34,637 INFO L168 Benchmark]: Toolchain (without parser) took 7041.32 ms. Allocated memory was 302.0 MB in the beginning and 677.4 MB in the end (delta: 375.4 MB). Free memory was 275.5 MB in the beginning and 533.0 MB in the end (delta: -257.5 MB). Peak memory consumption was 120.6 MB. Max. memory is 16.0 GB. [2020-11-12 12:21:34,638 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 302.0 MB. Free memory was 273.0 MB in the beginning and 272.9 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 12:21:34,639 INFO L168 Benchmark]: CACSL2BoogieTranslator took 768.41 ms. Allocated memory is still 302.0 MB. Free memory was 274.8 MB in the beginning and 275.7 MB in the end (delta: -921.1 kB). Peak memory consumption was 25.7 MB. Max. memory is 16.0 GB. [2020-11-12 12:21:34,639 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.16 ms. Allocated memory is still 302.0 MB. Free memory was 275.7 MB in the beginning and 273.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 12:21:34,640 INFO L168 Benchmark]: Boogie Preprocessor took 60.91 ms. Allocated memory is still 302.0 MB. Free memory was 273.6 MB in the beginning and 272.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 12:21:34,641 INFO L168 Benchmark]: RCFGBuilder took 550.26 ms. Allocated memory is still 302.0 MB. Free memory was 272.6 MB in the beginning and 250.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-11-12 12:21:34,642 INFO L168 Benchmark]: TraceAbstraction took 5552.02 ms. Allocated memory was 302.0 MB in the beginning and 677.4 MB in the end (delta: 375.4 MB). Free memory was 249.5 MB in the beginning and 533.0 MB in the end (delta: -283.5 MB). Peak memory consumption was 95.0 MB. Max. memory is 16.0 GB. [2020-11-12 12:21:34,646 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 302.0 MB. Free memory was 273.0 MB in the beginning and 272.9 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 768.41 ms. Allocated memory is still 302.0 MB. Free memory was 274.8 MB in the beginning and 275.7 MB in the end (delta: -921.1 kB). Peak memory consumption was 25.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 95.16 ms. Allocated memory is still 302.0 MB. Free memory was 275.7 MB in the beginning and 273.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 60.91 ms. Allocated memory is still 302.0 MB. Free memory was 273.6 MB in the beginning and 272.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 550.26 ms. Allocated memory is still 302.0 MB. Free memory was 272.6 MB in the beginning and 250.5 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5552.02 ms. Allocated memory was 302.0 MB in the beginning and 677.4 MB in the end (delta: 375.4 MB). Free memory was 249.5 MB in the beginning and 533.0 MB in the end (delta: -283.5 MB). Peak memory consumption was 95.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 5.4s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 442 SDtfs, 682 SDslu, 1601 SDs, 0 SdLazy, 211 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28769occurred 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: 0.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 336 NumberOfCodeBlocks, 336 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 329 ConstructedInterpolants, 0 QuantifiedInterpolants, 43375 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...