/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.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 14:47:43,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 14:47:43,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 14:47:44,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 14:47:44,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 14:47:44,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 14:47:44,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 14:47:44,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 14:47:44,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 14:47:44,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 14:47:44,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 14:47:44,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 14:47:44,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 14:47:44,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 14:47:44,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 14:47:44,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 14:47:44,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 14:47:44,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 14:47:44,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 14:47:44,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 14:47:44,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 14:47:44,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 14:47:44,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 14:47:44,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 14:47:44,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-20 14:47:44,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 14:47:44,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 14:47:44,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 14:47:44,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 14:47:44,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 14:47:44,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 14:47:44,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 14:47:44,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 14:47:44,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 14:47:44,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 14:47:44,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 14:47:44,063 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.epf [2021-01-20 14:47:44,092 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 14:47:44,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 14:47:44,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 14:47:44,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 14:47:44,094 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 14:47:44,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 14:47:44,095 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 14:47:44,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 14:47:44,095 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 14:47:44,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 14:47:44,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 14:47:44,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 14:47:44,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 14:47:44,097 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 14:47:44,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 14:47:44,097 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 14:47:44,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 14:47:44,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 14:47:44,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 14:47:44,098 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 14:47:44,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 14:47:44,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 14:47:44,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 14:47:44,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 14:47:44,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 14:47:44,099 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 14:47:44,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 14:47:44,100 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 14:47:44,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 14:47:44,100 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 14:47:44,100 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 14:47:44,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 14:47:44,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 14:47:44,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 14:47:44,508 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 14:47:44,509 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 14:47:44,510 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.oepc.i [2021-01-20 14:47:44,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/685800814/edaf28f8143e4ffe90df6ecf998f78e7/FLAG4ccf861b4 [2021-01-20 14:47:45,322 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 14:47:45,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_tso.oepc.i [2021-01-20 14:47:45,347 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/685800814/edaf28f8143e4ffe90df6ecf998f78e7/FLAG4ccf861b4 [2021-01-20 14:47:45,363 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/685800814/edaf28f8143e4ffe90df6ecf998f78e7 [2021-01-20 14:47:45,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 14:47:45,369 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 14:47:45,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 14:47:45,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 14:47:45,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 14:47:45,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:47:45" (1/1) ... [2021-01-20 14:47:45,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49d2b9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:45, skipping insertion in model container [2021-01-20 14:47:45,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:47:45" (1/1) ... [2021-01-20 14:47:45,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 14:47:45,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 14:47:45,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:47:45,906 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 14:47:45,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:47:46,120 INFO L208 MainTranslator]: Completed translation [2021-01-20 14:47:46,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:46 WrapperNode [2021-01-20 14:47:46,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 14:47:46,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 14:47:46,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 14:47:46,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 14:47:46,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:46" (1/1) ... [2021-01-20 14:47:46,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:46" (1/1) ... [2021-01-20 14:47:46,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 14:47:46,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 14:47:46,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 14:47:46,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 14:47:46,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:46" (1/1) ... [2021-01-20 14:47:46,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:46" (1/1) ... [2021-01-20 14:47:46,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:46" (1/1) ... [2021-01-20 14:47:46,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:46" (1/1) ... [2021-01-20 14:47:46,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:46" (1/1) ... [2021-01-20 14:47:46,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:46" (1/1) ... [2021-01-20 14:47:46,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:46" (1/1) ... [2021-01-20 14:47:46,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 14:47:46,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 14:47:46,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 14:47:46,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 14:47:46,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:46" (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 [2021-01-20 14:47:46,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 14:47:46,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 14:47:46,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 14:47:46,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 14:47:46,356 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-20 14:47:46,357 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-20 14:47:46,357 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-20 14:47:46,357 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-20 14:47:46,357 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-20 14:47:46,357 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-20 14:47:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 14:47:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 14:47:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 14:47:46,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 14:47:46,360 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-20 14:47:46,751 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 14:47:46,751 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 14:47:46,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:47:46 BoogieIcfgContainer [2021-01-20 14:47:46,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 14:47:46,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 14:47:46,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 14:47:46,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 14:47:46,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 02:47:45" (1/3) ... [2021-01-20 14:47:46,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5543d55e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:47:46, skipping insertion in model container [2021-01-20 14:47:46,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:46" (2/3) ... [2021-01-20 14:47:46,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5543d55e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:47:46, skipping insertion in model container [2021-01-20 14:47:46,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:47:46" (3/3) ... [2021-01-20 14:47:46,762 INFO L111 eAbstractionObserver]: Analyzing ICFG safe024_tso.oepc.i [2021-01-20 14:47:46,777 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 14:47:46,778 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 14:47:46,781 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 14:47:46,782 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 14:47:46,816 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,816 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,817 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,817 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,817 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,817 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,817 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,818 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,818 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,818 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,819 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,819 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,819 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,819 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,820 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,820 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,820 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,820 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,820 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,821 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,821 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,821 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,821 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,822 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,822 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,822 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,822 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,823 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,823 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,823 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,823 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,823 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,824 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,824 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,824 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,824 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,827 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,827 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,827 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,828 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,834 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,834 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,834 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,835 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,837 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,837 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,838 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,838 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:46,841 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 14:47:46,853 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-20 14:47:46,876 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 14:47:46,876 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 14:47:46,876 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 14:47:46,877 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 14:47:46,877 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 14:47:46,877 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 14:47:46,877 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 14:47:46,877 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 14:47:46,890 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 87 places, 80 transitions, 175 flow [2021-01-20 14:47:47,824 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9849 states, 9847 states have (on average 3.6144003249720726) internal successors, (35591), 9848 states have internal predecessors, (35591), 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) [2021-01-20 14:47:47,882 INFO L276 IsEmpty]: Start isEmpty. Operand has 9849 states, 9847 states have (on average 3.6144003249720726) internal successors, (35591), 9848 states have internal predecessors, (35591), 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) [2021-01-20 14:47:47,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-20 14:47:47,950 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:47:47,951 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] [2021-01-20 14:47:47,952 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:47:47,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:47:47,960 INFO L82 PathProgramCache]: Analyzing trace with hash 960913987, now seen corresponding path program 1 times [2021-01-20 14:47:47,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:47:47,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75491744] [2021-01-20 14:47:47,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:47:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:47:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:47:48,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75491744] [2021-01-20 14:47:48,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:47:48,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:47:48,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380142777] [2021-01-20 14:47:48,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:47:48,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:47:48,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:47:48,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:47:48,629 INFO L87 Difference]: Start difference. First operand has 9849 states, 9847 states have (on average 3.6144003249720726) internal successors, (35591), 9848 states have internal predecessors, (35591), 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 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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) [2021-01-20 14:47:49,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:47:49,091 INFO L93 Difference]: Finished difference Result 12201 states and 42465 transitions. [2021-01-20 14:47:49,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:47:49,094 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 43 [2021-01-20 14:47:49,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:47:49,158 INFO L225 Difference]: With dead ends: 12201 [2021-01-20 14:47:49,158 INFO L226 Difference]: Without dead ends: 4606 [2021-01-20 14:47:49,160 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:47:49,160 INFO L78 Accepts]: Start accepts. Automaton has 4606 states. Word has length 43 [2021-01-20 14:47:49,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:47:49,162 INFO L481 AbstractCegarLoop]: Abstraction has 4606 states. [2021-01-20 14:47:49,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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) [2021-01-20 14:47:49,163 INFO L276 IsEmpty]: Start isEmpty. Operand 4606 states. [2021-01-20 14:47:49,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-20 14:47:49,181 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:47:49,181 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] [2021-01-20 14:47:49,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 14:47:49,181 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:47:49,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:47:49,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1551930462, now seen corresponding path program 1 times [2021-01-20 14:47:49,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:47:49,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602348803] [2021-01-20 14:47:49,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:47:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:47:49,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:47:49,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602348803] [2021-01-20 14:47:49,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:47:49,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:47:49,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27133977] [2021-01-20 14:47:49,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:47:49,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:47:49,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:47:49,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:47:49,583 INFO L87 Difference]: Start difference. First operand 4606 states. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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) [2021-01-20 14:47:49,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:47:49,899 INFO L93 Difference]: Finished difference Result 5726 states and 19296 transitions. [2021-01-20 14:47:49,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 14:47:49,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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 45 [2021-01-20 14:47:49,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:47:49,927 INFO L225 Difference]: With dead ends: 5726 [2021-01-20 14:47:49,928 INFO L226 Difference]: Without dead ends: 3031 [2021-01-20 14:47:49,928 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-01-20 14:47:49,929 INFO L78 Accepts]: Start accepts. Automaton has 3031 states. Word has length 45 [2021-01-20 14:47:49,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:47:49,929 INFO L481 AbstractCegarLoop]: Abstraction has 3031 states. [2021-01-20 14:47:49,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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) [2021-01-20 14:47:49,930 INFO L276 IsEmpty]: Start isEmpty. Operand 3031 states. [2021-01-20 14:47:49,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-20 14:47:49,940 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:47:49,940 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] [2021-01-20 14:47:49,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 14:47:49,940 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:47:49,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:47:49,941 INFO L82 PathProgramCache]: Analyzing trace with hash 2078104249, now seen corresponding path program 1 times [2021-01-20 14:47:49,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:47:49,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412049447] [2021-01-20 14:47:49,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:47:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:47:50,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:47:50,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412049447] [2021-01-20 14:47:50,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:47:50,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:47:50,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731869336] [2021-01-20 14:47:50,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:47:50,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:47:50,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:47:50,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:47:50,116 INFO L87 Difference]: Start difference. First operand 3031 states. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2021-01-20 14:47:50,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:47:50,419 INFO L93 Difference]: Finished difference Result 3719 states and 12009 transitions. [2021-01-20 14:47:50,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:47:50,420 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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 48 [2021-01-20 14:47:50,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:47:50,447 INFO L225 Difference]: With dead ends: 3719 [2021-01-20 14:47:50,448 INFO L226 Difference]: Without dead ends: 2767 [2021-01-20 14:47:50,448 INFO L769 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 [2021-01-20 14:47:50,448 INFO L78 Accepts]: Start accepts. Automaton has 2767 states. Word has length 48 [2021-01-20 14:47:50,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:47:50,449 INFO L481 AbstractCegarLoop]: Abstraction has 2767 states. [2021-01-20 14:47:50,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2021-01-20 14:47:50,450 INFO L276 IsEmpty]: Start isEmpty. Operand 2767 states. [2021-01-20 14:47:50,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-20 14:47:50,466 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:47:50,466 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] [2021-01-20 14:47:50,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 14:47:50,467 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:47:50,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:47:50,468 INFO L82 PathProgramCache]: Analyzing trace with hash 234797092, now seen corresponding path program 1 times [2021-01-20 14:47:50,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:47:50,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747100279] [2021-01-20 14:47:50,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:47:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:47:50,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:47:50,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747100279] [2021-01-20 14:47:50,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:47:50,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:47:50,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539246061] [2021-01-20 14:47:50,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:47:50,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:47:50,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:47:50,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:47:50,701 INFO L87 Difference]: Start difference. First operand 2767 states. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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) [2021-01-20 14:47:50,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:47:50,929 INFO L93 Difference]: Finished difference Result 2773 states and 8670 transitions. [2021-01-20 14:47:50,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 14:47:50,930 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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 [2021-01-20 14:47:50,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:47:50,950 INFO L225 Difference]: With dead ends: 2773 [2021-01-20 14:47:50,951 INFO L226 Difference]: Without dead ends: 1981 [2021-01-20 14:47:50,951 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-01-20 14:47:50,951 INFO L78 Accepts]: Start accepts. Automaton has 1981 states. Word has length 49 [2021-01-20 14:47:50,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:47:50,953 INFO L481 AbstractCegarLoop]: Abstraction has 1981 states. [2021-01-20 14:47:50,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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) [2021-01-20 14:47:50,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states. [2021-01-20 14:47:50,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-20 14:47:50,961 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:47:50,961 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] [2021-01-20 14:47:50,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 14:47:50,961 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:47:50,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:47:50,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1561578237, now seen corresponding path program 1 times [2021-01-20 14:47:50,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:47:50,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072706878] [2021-01-20 14:47:50,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:47:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:47:51,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:47:51,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072706878] [2021-01-20 14:47:51,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:47:51,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-20 14:47:51,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773501715] [2021-01-20 14:47:51,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 14:47:51,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:47:51,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 14:47:51,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-20 14:47:51,270 INFO L87 Difference]: Start difference. First operand 1981 states. 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) [2021-01-20 14:47:51,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:47:51,563 INFO L93 Difference]: Finished difference Result 1504 states and 4437 transitions. [2021-01-20 14:47:51,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-20 14:47:51,564 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 [2021-01-20 14:47:51,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:47:51,574 INFO L225 Difference]: With dead ends: 1504 [2021-01-20 14:47:51,575 INFO L226 Difference]: Without dead ends: 1072 [2021-01-20 14:47:51,575 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-01-20 14:47:51,575 INFO L78 Accepts]: Start accepts. Automaton has 1072 states. Word has length 51 [2021-01-20 14:47:51,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:47:51,578 INFO L481 AbstractCegarLoop]: Abstraction has 1072 states. [2021-01-20 14:47:51,581 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) [2021-01-20 14:47:51,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states. [2021-01-20 14:47:51,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-01-20 14:47:51,587 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:47:51,593 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, 1, 1] [2021-01-20 14:47:51,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 14:47:51,594 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:47:51,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:47:51,596 INFO L82 PathProgramCache]: Analyzing trace with hash -936602175, now seen corresponding path program 1 times [2021-01-20 14:47:51,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:47:51,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860297165] [2021-01-20 14:47:51,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:47:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:47:51,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:47:51,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860297165] [2021-01-20 14:47:51,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:47:51,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:47:51,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266202204] [2021-01-20 14:47:51,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:47:51,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:47:51,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:47:51,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:47:51,807 INFO L87 Difference]: Start difference. First operand 1072 states. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-01-20 14:47:51,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:47:51,946 INFO L93 Difference]: Finished difference Result 1475 states and 4237 transitions. [2021-01-20 14:47:51,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 14:47:51,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 55 [2021-01-20 14:47:51,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:47:51,956 INFO L225 Difference]: With dead ends: 1475 [2021-01-20 14:47:51,956 INFO L226 Difference]: Without dead ends: 732 [2021-01-20 14:47:51,957 INFO L769 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 [2021-01-20 14:47:51,958 INFO L78 Accepts]: Start accepts. Automaton has 732 states. Word has length 55 [2021-01-20 14:47:51,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:47:51,959 INFO L481 AbstractCegarLoop]: Abstraction has 732 states. [2021-01-20 14:47:51,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-01-20 14:47:51,961 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states. [2021-01-20 14:47:51,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-01-20 14:47:51,971 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:47:51,972 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, 1, 1] [2021-01-20 14:47:51,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 14:47:51,972 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:47:51,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:47:51,973 INFO L82 PathProgramCache]: Analyzing trace with hash -331013291, now seen corresponding path program 2 times [2021-01-20 14:47:51,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:47:51,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277543984] [2021-01-20 14:47:51,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:47:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:47:52,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:47:52,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277543984] [2021-01-20 14:47:52,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:47:52,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:47:52,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527179310] [2021-01-20 14:47:52,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:47:52,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:47:52,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:47:52,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:47:52,153 INFO L87 Difference]: Start difference. First operand 732 states. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-01-20 14:47:52,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:47:52,285 INFO L93 Difference]: Finished difference Result 624 states and 1726 transitions. [2021-01-20 14:47:52,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 14:47:52,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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 55 [2021-01-20 14:47:52,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:47:52,286 INFO L225 Difference]: With dead ends: 624 [2021-01-20 14:47:52,286 INFO L226 Difference]: Without dead ends: 0 [2021-01-20 14:47:52,287 INFO L769 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 [2021-01-20 14:47:52,287 INFO L78 Accepts]: Start accepts. Automaton has 0 states. Word has length 55 [2021-01-20 14:47:52,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:47:52,287 INFO L481 AbstractCegarLoop]: Abstraction has 0 states. [2021-01-20 14:47:52,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2021-01-20 14:47:52,287 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states. [2021-01-20 14:47:52,287 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 14:47:52,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-20 14:47:52,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 02:47:52 BasicIcfg [2021-01-20 14:47:52,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 14:47:52,296 INFO L168 Benchmark]: Toolchain (without parser) took 6926.08 ms. Allocated memory was 302.0 MB in the beginning and 606.1 MB in the end (delta: 304.1 MB). Free memory was 276.8 MB in the beginning and 517.1 MB in the end (delta: -240.3 MB). Peak memory consumption was 177.8 MB. Max. memory is 16.0 GB. [2021-01-20 14:47:52,296 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 302.0 MB. Free memory was 271.7 MB in the beginning and 271.7 MB in the end (delta: 78.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 14:47:52,297 INFO L168 Benchmark]: CACSL2BoogieTranslator took 745.02 ms. Allocated memory is still 302.0 MB. Free memory was 276.5 MB in the beginning and 245.7 MB in the end (delta: 30.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2021-01-20 14:47:52,298 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.40 ms. Allocated memory is still 302.0 MB. Free memory was 245.7 MB in the beginning and 243.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 14:47:52,299 INFO L168 Benchmark]: Boogie Preprocessor took 68.06 ms. Allocated memory is still 302.0 MB. Free memory was 243.8 MB in the beginning and 284.8 MB in the end (delta: -41.0 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.0 GB. [2021-01-20 14:47:52,300 INFO L168 Benchmark]: RCFGBuilder took 470.51 ms. Allocated memory is still 302.0 MB. Free memory was 284.8 MB in the beginning and 261.6 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-01-20 14:47:52,300 INFO L168 Benchmark]: TraceAbstraction took 5537.69 ms. Allocated memory was 302.0 MB in the beginning and 606.1 MB in the end (delta: 304.1 MB). Free memory was 261.6 MB in the beginning and 517.1 MB in the end (delta: -255.5 MB). Peak memory consumption was 160.8 MB. Max. memory is 16.0 GB. [2021-01-20 14:47:52,304 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 302.0 MB. Free memory was 271.7 MB in the beginning and 271.7 MB in the end (delta: 78.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 745.02 ms. Allocated memory is still 302.0 MB. Free memory was 276.5 MB in the beginning and 245.7 MB in the end (delta: 30.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 90.40 ms. Allocated memory is still 302.0 MB. Free memory was 245.7 MB in the beginning and 243.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 68.06 ms. Allocated memory is still 302.0 MB. Free memory was 243.8 MB in the beginning and 284.8 MB in the end (delta: -41.0 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.0 GB. * RCFGBuilder took 470.51 ms. Allocated memory is still 302.0 MB. Free memory was 284.8 MB in the beginning and 261.6 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5537.69 ms. Allocated memory was 302.0 MB in the beginning and 606.1 MB in the end (delta: 304.1 MB). Free memory was 261.6 MB in the beginning and 517.1 MB in the end (delta: -255.5 MB). Peak memory consumption was 160.8 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, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.4s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 665 SDtfs, 984 SDslu, 2236 SDs, 0 SdLazy, 254 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9849occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 346 NumberOfCodeBlocks, 346 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 339 ConstructedInterpolants, 0 QuantifiedInterpolants, 44289 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...