/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-keepdead.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-aa1e80b [2020-12-17 23:52:11,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-17 23:52:11,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-17 23:52:11,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-17 23:52:11,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-17 23:52:11,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-17 23:52:11,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-17 23:52:11,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-17 23:52:11,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-17 23:52:11,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-17 23:52:11,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-17 23:52:11,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-17 23:52:11,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-17 23:52:11,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-17 23:52:11,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-17 23:52:11,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-17 23:52:11,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-17 23:52:11,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-17 23:52:11,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-17 23:52:11,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-17 23:52:11,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-17 23:52:11,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-17 23:52:11,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-17 23:52:11,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-17 23:52:11,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-17 23:52:11,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-17 23:52:11,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-17 23:52:11,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-17 23:52:11,533 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-17 23:52:11,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-17 23:52:11,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-17 23:52:11,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-17 23:52:11,536 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-17 23:52:11,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-17 23:52:11,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-17 23:52:11,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-17 23:52:11,541 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-keepdead.epf [2020-12-17 23:52:11,593 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-17 23:52:11,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-17 23:52:11,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-17 23:52:11,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-17 23:52:11,596 INFO L138 SettingsManager]: * Use SBE=true [2020-12-17 23:52:11,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-17 23:52:11,597 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-17 23:52:11,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-17 23:52:11,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-17 23:52:11,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-17 23:52:11,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-17 23:52:11,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-17 23:52:11,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-17 23:52:11,601 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-17 23:52:11,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-17 23:52:11,601 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-17 23:52:11,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-17 23:52:11,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-17 23:52:11,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-17 23:52:11,602 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-17 23:52:11,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-17 23:52:11,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-17 23:52:11,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-17 23:52:11,603 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-17 23:52:11,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-17 23:52:11,603 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-17 23:52:11,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-17 23:52:11,604 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-12-17 23:52:11,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-17 23:52:11,604 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2020-12-17 23:52:11,604 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2020-12-17 23:52:11,604 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-17 23:52:12,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-17 23:52:12,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-17 23:52:12,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-17 23:52:12,034 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-17 23:52:12,035 INFO L275 PluginConnector]: CDTParser initialized [2020-12-17 23:52:12,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc.i [2020-12-17 23:52:12,129 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e162bd45/f4038c49bf8046e8bfdd8f4f80d9fb8a/FLAG65d0386dd [2020-12-17 23:52:12,859 INFO L306 CDTParser]: Found 1 translation units. [2020-12-17 23:52:12,859 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc.i [2020-12-17 23:52:12,877 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e162bd45/f4038c49bf8046e8bfdd8f4f80d9fb8a/FLAG65d0386dd [2020-12-17 23:52:13,166 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e162bd45/f4038c49bf8046e8bfdd8f4f80d9fb8a [2020-12-17 23:52:13,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-17 23:52:13,173 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-12-17 23:52:13,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-17 23:52:13,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-17 23:52:13,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-17 23:52:13,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:52:13" (1/1) ... [2020-12-17 23:52:13,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@780bc737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:52:13, skipping insertion in model container [2020-12-17 23:52:13,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:52:13" (1/1) ... [2020-12-17 23:52:13,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-17 23:52:13,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-17 23:52:13,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-17 23:52:13,813 INFO L203 MainTranslator]: Completed pre-run [2020-12-17 23:52:13,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-17 23:52:14,024 INFO L208 MainTranslator]: Completed translation [2020-12-17 23:52:14,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:52:14 WrapperNode [2020-12-17 23:52:14,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-17 23:52:14,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-17 23:52:14,027 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-17 23:52:14,027 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-17 23:52:14,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:52:14" (1/1) ... [2020-12-17 23:52:14,059 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:52:14" (1/1) ... [2020-12-17 23:52:14,083 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-17 23:52:14,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-17 23:52:14,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-17 23:52:14,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-17 23:52:14,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:52:14" (1/1) ... [2020-12-17 23:52:14,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:52:14" (1/1) ... [2020-12-17 23:52:14,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:52:14" (1/1) ... [2020-12-17 23:52:14,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:52:14" (1/1) ... [2020-12-17 23:52:14,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:52:14" (1/1) ... [2020-12-17 23:52:14,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:52:14" (1/1) ... [2020-12-17 23:52:14,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:52:14" (1/1) ... [2020-12-17 23:52:14,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-17 23:52:14,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-17 23:52:14,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-17 23:52:14,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-17 23:52:14,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:52:14" (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 [2020-12-17 23:52:14,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-17 23:52:14,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-17 23:52:14,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-17 23:52:14,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-17 23:52:14,217 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-17 23:52:14,218 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-17 23:52:14,218 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-17 23:52:14,219 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-17 23:52:14,220 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-17 23:52:14,220 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-17 23:52:14,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-17 23:52:14,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-17 23:52:14,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-17 23:52:14,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-17 23:52:14,222 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-17 23:52:14,770 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-17 23:52:14,770 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-17 23:52:14,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:52:14 BoogieIcfgContainer [2020-12-17 23:52:14,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-17 23:52:14,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-17 23:52:14,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-17 23:52:14,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-17 23:52:14,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 11:52:13" (1/3) ... [2020-12-17 23:52:14,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f2155f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:52:14, skipping insertion in model container [2020-12-17 23:52:14,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:52:14" (2/3) ... [2020-12-17 23:52:14,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f2155f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:52:14, skipping insertion in model container [2020-12-17 23:52:14,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:52:14" (3/3) ... [2020-12-17 23:52:14,782 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc.i [2020-12-17 23:52:14,799 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-17 23:52:14,799 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-17 23:52:14,803 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-17 23:52:14,805 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-17 23:52:14,844 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,844 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,844 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,844 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,845 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,845 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,845 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,845 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,846 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,846 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,846 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,847 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,847 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,847 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,848 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,848 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,848 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,848 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,848 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,849 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,849 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,849 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,850 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,850 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,850 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,851 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,851 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,851 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,851 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,852 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,852 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,852 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,852 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,853 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,853 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,853 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,856 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,856 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,856 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,857 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,862 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,862 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,862 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,863 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,866 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,866 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,866 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,867 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:52:14,872 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-17 23:52:14,887 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-17 23:52:14,912 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-17 23:52:14,912 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-17 23:52:14,912 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-17 23:52:14,913 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-17 23:52:14,913 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-17 23:52:14,913 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-17 23:52:14,913 INFO L383 AbstractCegarLoop]: Minimize is NONE [2020-12-17 23:52:14,913 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-17 23:52:14,927 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 171 flow [2020-12-17 23:52:15,616 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) [2020-12-17 23:52:15,653 INFO L276 IsEmpty]: Start isEmpty. Operand 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) [2020-12-17 23:52:15,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-17 23:52:15,696 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:52:15,697 INFO L504 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] [2020-12-17 23:52:15,698 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:52:15,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:52:15,705 INFO L82 PathProgramCache]: Analyzing trace with hash 31988960, now seen corresponding path program 1 times [2020-12-17 23:52:15,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:52:15,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553111946] [2020-12-17 23:52:15,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:52:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:52:16,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:52:16,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553111946] [2020-12-17 23:52:16,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:52:16,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:52:16,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507476489] [2020-12-17 23:52:16,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:52:16,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:52:16,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:52:16,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:52:16,257 INFO L87 Difference]: Start difference. First operand 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) 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) [2020-12-17 23:52:16,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:52:16,643 INFO L93 Difference]: Finished difference Result 10464 states and 36160 transitions. [2020-12-17 23:52:16,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-17 23:52:16,645 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 [2020-12-17 23:52:16,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:52:16,647 INFO L763 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 [2020-12-17 23:52:16,648 INFO L78 Accepts]: Start accepts. Automaton has 10464 states and 36160 transitions. Word has length 42 [2020-12-17 23:52:16,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:52:16,650 INFO L481 AbstractCegarLoop]: Abstraction has 10464 states and 36160 transitions. [2020-12-17 23:52:16,650 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) [2020-12-17 23:52:16,650 INFO L276 IsEmpty]: Start isEmpty. Operand 10464 states and 36160 transitions. [2020-12-17 23:52:16,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-17 23:52:16,665 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:52:16,666 INFO L504 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] [2020-12-17 23:52:16,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-17 23:52:16,666 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:52:16,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:52:16,667 INFO L82 PathProgramCache]: Analyzing trace with hash -95647071, now seen corresponding path program 1 times [2020-12-17 23:52:16,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:52:16,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482956444] [2020-12-17 23:52:16,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:52:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:52:16,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:52:16,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482956444] [2020-12-17 23:52:16,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:52:16,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:52:16,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041397788] [2020-12-17 23:52:16,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:52:16,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:52:16,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:52:16,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:52:16,871 INFO L87 Difference]: Start difference. First operand 10464 states and 36160 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) [2020-12-17 23:52:17,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:52:17,501 INFO L93 Difference]: Finished difference Result 14424 states and 49228 transitions. [2020-12-17 23:52:17,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-17 23:52:17,502 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 [2020-12-17 23:52:17,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:52:17,504 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-12-17 23:52:17,504 INFO L78 Accepts]: Start accepts. Automaton has 14424 states and 49228 transitions. Word has length 44 [2020-12-17 23:52:17,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:52:17,505 INFO L481 AbstractCegarLoop]: Abstraction has 14424 states and 49228 transitions. [2020-12-17 23:52:17,505 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) [2020-12-17 23:52:17,505 INFO L276 IsEmpty]: Start isEmpty. Operand 14424 states and 49228 transitions. [2020-12-17 23:52:17,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-17 23:52:17,560 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:52:17,561 INFO L504 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] [2020-12-17 23:52:17,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-17 23:52:17,561 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:52:17,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:52:17,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1389736977, now seen corresponding path program 1 times [2020-12-17 23:52:17,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:52:17,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395698960] [2020-12-17 23:52:17,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:52:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:52:17,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:52:17,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395698960] [2020-12-17 23:52:17,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:52:17,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:52:17,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423083623] [2020-12-17 23:52:17,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:52:17,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:52:17,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:52:17,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:52:17,836 INFO L87 Difference]: Start difference. First operand 14424 states and 49228 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) [2020-12-17 23:52:18,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:52:18,406 INFO L93 Difference]: Finished difference Result 26104 states and 87692 transitions. [2020-12-17 23:52:18,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-17 23:52:18,406 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 [2020-12-17 23:52:18,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:52:18,408 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-12-17 23:52:18,408 INFO L78 Accepts]: Start accepts. Automaton has 26104 states and 87692 transitions. Word has length 47 [2020-12-17 23:52:18,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:52:18,409 INFO L481 AbstractCegarLoop]: Abstraction has 26104 states and 87692 transitions. [2020-12-17 23:52:18,409 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) [2020-12-17 23:52:18,409 INFO L276 IsEmpty]: Start isEmpty. Operand 26104 states and 87692 transitions. [2020-12-17 23:52:18,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-17 23:52:18,456 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:52:18,456 INFO L504 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] [2020-12-17 23:52:18,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-17 23:52:18,457 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:52:18,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:52:18,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1496327244, now seen corresponding path program 1 times [2020-12-17 23:52:18,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:52:18,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929622596] [2020-12-17 23:52:18,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:52:18,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:52:18,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:52:18,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929622596] [2020-12-17 23:52:18,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:52:18,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:52:18,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552440150] [2020-12-17 23:52:18,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:52:18,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:52:18,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:52:18,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:52:18,766 INFO L87 Difference]: Start difference. First operand 26104 states and 87692 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) [2020-12-17 23:52:19,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:52:19,142 INFO L93 Difference]: Finished difference Result 24976 states and 82117 transitions. [2020-12-17 23:52:19,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-17 23:52:19,143 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 [2020-12-17 23:52:19,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:52:19,144 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-17 23:52:19,145 INFO L78 Accepts]: Start accepts. Automaton has 24976 states and 82117 transitions. Word has length 49 [2020-12-17 23:52:19,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:52:19,145 INFO L481 AbstractCegarLoop]: Abstraction has 24976 states and 82117 transitions. [2020-12-17 23:52:19,145 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) [2020-12-17 23:52:19,146 INFO L276 IsEmpty]: Start isEmpty. Operand 24976 states and 82117 transitions. [2020-12-17 23:52:19,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-17 23:52:19,269 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:52:19,271 INFO L504 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] [2020-12-17 23:52:19,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-17 23:52:19,273 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:52:19,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:52:19,275 INFO L82 PathProgramCache]: Analyzing trace with hash 577338396, now seen corresponding path program 1 times [2020-12-17 23:52:19,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:52:19,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317172659] [2020-12-17 23:52:19,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:52:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:52:19,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:52:19,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317172659] [2020-12-17 23:52:19,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:52:19,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:52:19,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718046589] [2020-12-17 23:52:19,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:52:19,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:52:19,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:52:19,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:52:19,479 INFO L87 Difference]: Start difference. First operand 24976 states and 82117 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) [2020-12-17 23:52:20,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:52:20,069 INFO L93 Difference]: Finished difference Result 16846 states and 53831 transitions. [2020-12-17 23:52:20,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-17 23:52:20,070 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 [2020-12-17 23:52:20,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:52:20,071 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-12-17 23:52:20,071 INFO L78 Accepts]: Start accepts. Automaton has 16846 states and 53831 transitions. Word has length 50 [2020-12-17 23:52:20,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:52:20,075 INFO L481 AbstractCegarLoop]: Abstraction has 16846 states and 53831 transitions. [2020-12-17 23:52:20,075 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) [2020-12-17 23:52:20,076 INFO L276 IsEmpty]: Start isEmpty. Operand 16846 states and 53831 transitions. [2020-12-17 23:52:20,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-17 23:52:20,107 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:52:20,108 INFO L504 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] [2020-12-17 23:52:20,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-17 23:52:20,108 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:52:20,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:52:20,110 INFO L82 PathProgramCache]: Analyzing trace with hash -270393692, now seen corresponding path program 1 times [2020-12-17 23:52:20,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:52:20,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592094851] [2020-12-17 23:52:20,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:52:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:52:20,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:52:20,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592094851] [2020-12-17 23:52:20,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:52:20,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-17 23:52:20,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931310768] [2020-12-17 23:52:20,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-17 23:52:20,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:52:20,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-17 23:52:20,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-17 23:52:20,292 INFO L87 Difference]: Start difference. First operand 16846 states and 53831 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) [2020-12-17 23:52:20,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:52:20,842 INFO L93 Difference]: Finished difference Result 11572 states and 36476 transitions. [2020-12-17 23:52:20,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-17 23:52:20,843 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 [2020-12-17 23:52:20,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:52:20,844 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2020-12-17 23:52:20,845 INFO L78 Accepts]: Start accepts. Automaton has 11572 states and 36476 transitions. Word has length 51 [2020-12-17 23:52:20,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:52:20,845 INFO L481 AbstractCegarLoop]: Abstraction has 11572 states and 36476 transitions. [2020-12-17 23:52:20,845 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) [2020-12-17 23:52:20,845 INFO L276 IsEmpty]: Start isEmpty. Operand 11572 states and 36476 transitions. [2020-12-17 23:52:20,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-17 23:52:20,874 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:52:20,874 INFO L504 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] [2020-12-17 23:52:20,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-17 23:52:20,874 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:52:20,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:52:20,875 INFO L82 PathProgramCache]: Analyzing trace with hash 796083109, now seen corresponding path program 1 times [2020-12-17 23:52:20,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:52:20,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850225055] [2020-12-17 23:52:20,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:52:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:52:20,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:52:20,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850225055] [2020-12-17 23:52:20,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:52:20,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:52:20,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530869942] [2020-12-17 23:52:20,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:52:20,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:52:20,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:52:21,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:52:21,000 INFO L87 Difference]: Start difference. First operand 11572 states and 36476 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) [2020-12-17 23:52:21,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:52:21,317 INFO L93 Difference]: Finished difference Result 17175 states and 53589 transitions. [2020-12-17 23:52:21,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-17 23:52:21,318 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 [2020-12-17 23:52:21,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:52:21,318 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-17 23:52:21,318 INFO L78 Accepts]: Start accepts. Automaton has 17175 states and 53589 transitions. Word has length 53 [2020-12-17 23:52:21,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:52:21,319 INFO L481 AbstractCegarLoop]: Abstraction has 17175 states and 53589 transitions. [2020-12-17 23:52:21,319 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) [2020-12-17 23:52:21,319 INFO L276 IsEmpty]: Start isEmpty. Operand 17175 states and 53589 transitions. [2020-12-17 23:52:21,344 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-17 23:52:21,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-17 23:52:21,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 11:52:21 BasicIcfg [2020-12-17 23:52:21,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-17 23:52:21,352 INFO L168 Benchmark]: Toolchain (without parser) took 8178.68 ms. Allocated memory was 302.0 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 276.3 MB in the beginning and 1.1 GB in the end (delta: -829.9 MB). Peak memory consumption was 231.0 MB. Max. memory is 16.0 GB. [2020-12-17 23:52:21,352 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 302.0 MB. Free memory is still 271.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-12-17 23:52:21,353 INFO L168 Benchmark]: CACSL2BoogieTranslator took 850.50 ms. Allocated memory is still 302.0 MB. Free memory was 276.0 MB in the beginning and 275.1 MB in the end (delta: 898.2 kB). Peak memory consumption was 27.2 MB. Max. memory is 16.0 GB. [2020-12-17 23:52:21,354 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.52 ms. Allocated memory is still 302.0 MB. Free memory was 275.1 MB in the beginning and 273.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-12-17 23:52:21,355 INFO L168 Benchmark]: Boogie Preprocessor took 40.83 ms. Allocated memory is still 302.0 MB. Free memory was 273.0 MB in the beginning and 272.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-12-17 23:52:21,356 INFO L168 Benchmark]: RCFGBuilder took 647.83 ms. Allocated memory is still 302.0 MB. Free memory was 272.0 MB in the beginning and 248.9 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-12-17 23:52:21,356 INFO L168 Benchmark]: TraceAbstraction took 6574.41 ms. Allocated memory was 302.0 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 247.9 MB in the beginning and 1.1 GB in the end (delta: -858.4 MB). Peak memory consumption was 203.8 MB. Max. memory is 16.0 GB. [2020-12-17 23:52:21,360 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 302.0 MB. Free memory is still 271.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 850.50 ms. Allocated memory is still 302.0 MB. Free memory was 276.0 MB in the beginning and 275.1 MB in the end (delta: 898.2 kB). Peak memory consumption was 27.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 56.52 ms. Allocated memory is still 302.0 MB. Free memory was 275.1 MB in the beginning and 273.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 40.83 ms. Allocated memory is still 302.0 MB. Free memory was 273.0 MB in the beginning and 272.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 647.83 ms. Allocated memory is still 302.0 MB. Free memory was 272.0 MB in the beginning and 248.9 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6574.41 ms. Allocated memory was 302.0 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 247.9 MB in the beginning and 1.1 GB in the end (delta: -858.4 MB). Peak memory consumption was 203.8 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: 6.4s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.7s, HoareTripleCheckerStatistics: 748 SDtfs, 1608 SDslu, 2701 SDs, 0 SdLazy, 339 SolverSat, 86 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26104occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 336 NumberOfCodeBlocks, 336 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 329 ConstructedInterpolants, 0 QuantifiedInterpolants, 43243 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...