/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/safe020_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-6f57305 [2021-01-26 17:30:43,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-26 17:30:43,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-26 17:30:44,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-26 17:30:44,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-26 17:30:44,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-26 17:30:44,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-26 17:30:44,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-26 17:30:44,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-26 17:30:44,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-26 17:30:44,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-26 17:30:44,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-26 17:30:44,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-26 17:30:44,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-26 17:30:44,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-26 17:30:44,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-26 17:30:44,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-26 17:30:44,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-26 17:30:44,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-26 17:30:44,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-26 17:30:44,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-26 17:30:44,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-26 17:30:44,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-26 17:30:44,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-26 17:30:44,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-26 17:30:44,048 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-26 17:30:44,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-26 17:30:44,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-26 17:30:44,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-26 17:30:44,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-26 17:30:44,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-26 17:30:44,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-26 17:30:44,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-26 17:30:44,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-26 17:30:44,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-26 17:30:44,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-26 17:30:44,057 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 [2021-01-26 17:30:44,084 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-26 17:30:44,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-26 17:30:44,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-26 17:30:44,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-26 17:30:44,087 INFO L138 SettingsManager]: * Use SBE=true [2021-01-26 17:30:44,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-26 17:30:44,088 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-26 17:30:44,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-26 17:30:44,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-26 17:30:44,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-26 17:30:44,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-26 17:30:44,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-26 17:30:44,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-26 17:30:44,090 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-26 17:30:44,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-26 17:30:44,091 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-26 17:30:44,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-26 17:30:44,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-26 17:30:44,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-26 17:30:44,092 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-26 17:30:44,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-26 17:30:44,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-26 17:30:44,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-26 17:30:44,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-26 17:30:44,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-26 17:30:44,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-26 17:30:44,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-26 17:30:44,095 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-26 17:30:44,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-26 17:30:44,095 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-26 17:30:44,096 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-26 17:30:44,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-26 17:30:44,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-26 17:30:44,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-26 17:30:44,470 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-26 17:30:44,476 INFO L275 PluginConnector]: CDTParser initialized [2021-01-26 17:30:44,477 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2021-01-26 17:30:44,569 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/006e0261b/3acfcbb741ed405bae3d74fff38f161b/FLAG83f6e4201 [2021-01-26 17:30:45,253 INFO L306 CDTParser]: Found 1 translation units. [2021-01-26 17:30:45,254 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2021-01-26 17:30:45,275 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/006e0261b/3acfcbb741ed405bae3d74fff38f161b/FLAG83f6e4201 [2021-01-26 17:30:45,564 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/006e0261b/3acfcbb741ed405bae3d74fff38f161b [2021-01-26 17:30:45,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-26 17:30:45,586 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-26 17:30:45,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-26 17:30:45,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-26 17:30:45,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-26 17:30:45,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 05:30:45" (1/1) ... [2021-01-26 17:30:45,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@267ce437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:30:45, skipping insertion in model container [2021-01-26 17:30:45,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 05:30:45" (1/1) ... [2021-01-26 17:30:45,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-26 17:30:45,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-26 17:30:46,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-26 17:30:46,109 INFO L203 MainTranslator]: Completed pre-run [2021-01-26 17:30:46,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-26 17:30:46,246 INFO L208 MainTranslator]: Completed translation [2021-01-26 17:30:46,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:30:46 WrapperNode [2021-01-26 17:30:46,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-26 17:30:46,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-26 17:30:46,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-26 17:30:46,249 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-26 17:30:46,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:30:46" (1/1) ... [2021-01-26 17:30:46,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:30:46" (1/1) ... [2021-01-26 17:30:46,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-26 17:30:46,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-26 17:30:46,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-26 17:30:46,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-26 17:30:46,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:30:46" (1/1) ... [2021-01-26 17:30:46,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:30:46" (1/1) ... [2021-01-26 17:30:46,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:30:46" (1/1) ... [2021-01-26 17:30:46,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:30:46" (1/1) ... [2021-01-26 17:30:46,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:30:46" (1/1) ... [2021-01-26 17:30:46,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:30:46" (1/1) ... [2021-01-26 17:30:46,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:30:46" (1/1) ... [2021-01-26 17:30:46,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-26 17:30:46,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-26 17:30:46,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-26 17:30:46,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-26 17:30:46,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:30:46" (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 [2021-01-26 17:30:46,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-26 17:30:46,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-26 17:30:46,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-26 17:30:46,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-26 17:30:46,483 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-26 17:30:46,484 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-26 17:30:46,485 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-26 17:30:46,485 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-26 17:30:46,486 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-26 17:30:46,486 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-26 17:30:46,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-26 17:30:46,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-26 17:30:46,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-26 17:30:46,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-26 17:30:46,488 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-26 17:30:46,929 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-26 17:30:46,929 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-26 17:30:46,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 05:30:46 BoogieIcfgContainer [2021-01-26 17:30:46,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-26 17:30:46,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-26 17:30:46,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-26 17:30:46,939 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-26 17:30:46,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.01 05:30:45" (1/3) ... [2021-01-26 17:30:46,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62eccc29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 05:30:46, skipping insertion in model container [2021-01-26 17:30:46,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 05:30:46" (2/3) ... [2021-01-26 17:30:46,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62eccc29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 05:30:46, skipping insertion in model container [2021-01-26 17:30:46,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 05:30:46" (3/3) ... [2021-01-26 17:30:46,943 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_tso.opt.i [2021-01-26 17:30:46,958 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-26 17:30:46,958 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-26 17:30:46,962 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-26 17:30:46,963 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-26 17:30:47,008 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,009 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,009 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,009 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,010 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,010 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,010 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,010 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,010 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,011 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,011 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,011 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,012 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,012 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,013 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,013 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,013 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,013 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,013 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,013 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,014 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,014 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,014 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,014 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,015 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,016 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,016 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,016 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,018 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,018 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,018 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,018 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,019 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,019 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,020 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,020 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,023 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,024 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,024 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,024 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,031 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,032 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,032 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,032 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,036 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,036 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,036 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,036 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-26 17:30:47,038 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-26 17:30:47,052 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-26 17:30:47,074 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-26 17:30:47,076 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-26 17:30:47,076 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-26 17:30:47,076 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-26 17:30:47,076 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-26 17:30:47,076 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-26 17:30:47,076 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-26 17:30:47,077 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-26 17:30:47,088 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84 places, 77 transitions, 169 flow [2021-01-26 17:30:47,710 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8447 states, 8445 states have (on average 3.5896980461811725) internal successors, (30315), 8446 states have internal predecessors, (30315), 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) [2021-01-26 17:30:47,745 INFO L276 IsEmpty]: Start isEmpty. Operand has 8447 states, 8445 states have (on average 3.5896980461811725) internal successors, (30315), 8446 states have internal predecessors, (30315), 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) [2021-01-26 17:30:47,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-26 17:30:47,789 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:30:47,790 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] [2021-01-26 17:30:47,790 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:30:47,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:30:47,797 INFO L82 PathProgramCache]: Analyzing trace with hash -736353114, now seen corresponding path program 1 times [2021-01-26 17:30:47,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:30:47,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969889648] [2021-01-26 17:30:47,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:30:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:30:48,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:30:48,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969889648] [2021-01-26 17:30:48,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:30:48,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:30:48,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542526002] [2021-01-26 17:30:48,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:30:48,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:30:48,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:30:48,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:30:48,336 INFO L87 Difference]: Start difference. First operand has 8447 states, 8445 states have (on average 3.5896980461811725) internal successors, (30315), 8446 states have internal predecessors, (30315), 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 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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) [2021-01-26 17:30:48,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:30:48,706 INFO L93 Difference]: Finished difference Result 10463 states and 36159 transitions. [2021-01-26 17:30:48,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:30:48,709 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 41 [2021-01-26 17:30:48,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:30:48,765 INFO L225 Difference]: With dead ends: 10463 [2021-01-26 17:30:48,766 INFO L226 Difference]: Without dead ends: 3953 [2021-01-26 17:30:48,767 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 [2021-01-26 17:30:48,768 INFO L78 Accepts]: Start accepts. Automaton has 3953 states. Word has length 41 [2021-01-26 17:30:48,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:30:48,769 INFO L481 AbstractCegarLoop]: Abstraction has 3953 states. [2021-01-26 17:30:48,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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) [2021-01-26 17:30:48,770 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states. [2021-01-26 17:30:48,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-26 17:30:48,786 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:30:48,786 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] [2021-01-26 17:30:48,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-26 17:30:48,787 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:30:48,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:30:48,788 INFO L82 PathProgramCache]: Analyzing trace with hash 2028391175, now seen corresponding path program 1 times [2021-01-26 17:30:48,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:30:48,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849377253] [2021-01-26 17:30:48,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:30:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:30:48,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:30:48,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849377253] [2021-01-26 17:30:48,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:30:48,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:30:48,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582569944] [2021-01-26 17:30:48,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:30:48,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:30:48,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:30:48,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:30:48,980 INFO L87 Difference]: Start difference. First operand 3953 states. 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) [2021-01-26 17:30:49,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:30:49,156 INFO L93 Difference]: Finished difference Result 4697 states and 15760 transitions. [2021-01-26 17:30:49,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:30:49,157 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 [2021-01-26 17:30:49,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:30:49,190 INFO L225 Difference]: With dead ends: 4697 [2021-01-26 17:30:49,191 INFO L226 Difference]: Without dead ends: 3857 [2021-01-26 17:30:49,191 INFO L769 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 [2021-01-26 17:30:49,192 INFO L78 Accepts]: Start accepts. Automaton has 3857 states. Word has length 43 [2021-01-26 17:30:49,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:30:49,193 INFO L481 AbstractCegarLoop]: Abstraction has 3857 states. [2021-01-26 17:30:49,193 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) [2021-01-26 17:30:49,193 INFO L276 IsEmpty]: Start isEmpty. Operand 3857 states. [2021-01-26 17:30:49,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-26 17:30:49,204 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:30:49,204 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] [2021-01-26 17:30:49,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-26 17:30:49,205 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:30:49,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:30:49,205 INFO L82 PathProgramCache]: Analyzing trace with hash 565402146, now seen corresponding path program 1 times [2021-01-26 17:30:49,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:30:49,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237392243] [2021-01-26 17:30:49,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:30:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:30:49,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:30:49,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237392243] [2021-01-26 17:30:49,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:30:49,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 17:30:49,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636890781] [2021-01-26 17:30:49,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 17:30:49,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:30:49,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 17:30:49,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-26 17:30:49,391 INFO L87 Difference]: Start difference. First operand 3857 states. 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) [2021-01-26 17:30:49,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:30:49,744 INFO L93 Difference]: Finished difference Result 5101 states and 17053 transitions. [2021-01-26 17:30:49,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-26 17:30:49,745 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 [2021-01-26 17:30:49,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:30:49,768 INFO L225 Difference]: With dead ends: 5101 [2021-01-26 17:30:49,768 INFO L226 Difference]: Without dead ends: 2839 [2021-01-26 17:30:49,770 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-01-26 17:30:49,770 INFO L78 Accepts]: Start accepts. Automaton has 2839 states. Word has length 44 [2021-01-26 17:30:49,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:30:49,771 INFO L481 AbstractCegarLoop]: Abstraction has 2839 states. [2021-01-26 17:30:49,771 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) [2021-01-26 17:30:49,771 INFO L276 IsEmpty]: Start isEmpty. Operand 2839 states. [2021-01-26 17:30:49,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-26 17:30:49,779 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:30:49,779 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] [2021-01-26 17:30:49,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-26 17:30:49,780 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:30:49,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:30:49,782 INFO L82 PathProgramCache]: Analyzing trace with hash -676376959, now seen corresponding path program 1 times [2021-01-26 17:30:49,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:30:49,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040081816] [2021-01-26 17:30:49,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:30:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:30:50,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:30:50,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040081816] [2021-01-26 17:30:50,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:30:50,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:30:50,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087243363] [2021-01-26 17:30:50,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:30:50,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:30:50,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:30:50,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:30:50,015 INFO L87 Difference]: Start difference. First operand 2839 states. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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) [2021-01-26 17:30:50,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:30:50,184 INFO L93 Difference]: Finished difference Result 4551 states and 14670 transitions. [2021-01-26 17:30:50,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:30:50,185 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 46 [2021-01-26 17:30:50,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:30:50,231 INFO L225 Difference]: With dead ends: 4551 [2021-01-26 17:30:50,232 INFO L226 Difference]: Without dead ends: 3223 [2021-01-26 17:30:50,232 INFO L769 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 [2021-01-26 17:30:50,232 INFO L78 Accepts]: Start accepts. Automaton has 3223 states. Word has length 46 [2021-01-26 17:30:50,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:30:50,233 INFO L481 AbstractCegarLoop]: Abstraction has 3223 states. [2021-01-26 17:30:50,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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) [2021-01-26 17:30:50,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states. [2021-01-26 17:30:50,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-26 17:30:50,244 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:30:50,245 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] [2021-01-26 17:30:50,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-26 17:30:50,245 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:30:50,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:30:50,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1519714679, now seen corresponding path program 1 times [2021-01-26 17:30:50,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:30:50,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211184977] [2021-01-26 17:30:50,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:30:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:30:50,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:30:50,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211184977] [2021-01-26 17:30:50,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:30:50,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-26 17:30:50,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262953555] [2021-01-26 17:30:50,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-26 17:30:50,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:30:50,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-26 17:30:50,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-26 17:30:50,421 INFO L87 Difference]: Start difference. First operand 3223 states. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 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) [2021-01-26 17:30:50,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:30:50,623 INFO L93 Difference]: Finished difference Result 3863 states and 12152 transitions. [2021-01-26 17:30:50,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-26 17:30:50,624 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 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 [2021-01-26 17:30:50,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:30:50,635 INFO L225 Difference]: With dead ends: 3863 [2021-01-26 17:30:50,635 INFO L226 Difference]: Without dead ends: 2967 [2021-01-26 17:30:50,636 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-26 17:30:50,636 INFO L78 Accepts]: Start accepts. Automaton has 2967 states. Word has length 47 [2021-01-26 17:30:50,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:30:50,639 INFO L481 AbstractCegarLoop]: Abstraction has 2967 states. [2021-01-26 17:30:50,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 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) [2021-01-26 17:30:50,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2967 states. [2021-01-26 17:30:50,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-26 17:30:50,651 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:30:50,658 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] [2021-01-26 17:30:50,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-26 17:30:50,658 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:30:50,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:30:50,659 INFO L82 PathProgramCache]: Analyzing trace with hash 2042804477, now seen corresponding path program 1 times [2021-01-26 17:30:50,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:30:50,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090801095] [2021-01-26 17:30:50,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:30:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:30:50,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:30:50,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090801095] [2021-01-26 17:30:50,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:30:50,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 17:30:50,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381834643] [2021-01-26 17:30:50,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 17:30:50,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:30:50,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 17:30:50,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-26 17:30:50,807 INFO L87 Difference]: Start difference. First operand 2967 states. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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) [2021-01-26 17:30:50,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:30:50,996 INFO L93 Difference]: Finished difference Result 2835 states and 8647 transitions. [2021-01-26 17:30:50,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-26 17:30:50,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 [2021-01-26 17:30:50,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:30:51,007 INFO L225 Difference]: With dead ends: 2835 [2021-01-26 17:30:51,007 INFO L226 Difference]: Without dead ends: 2067 [2021-01-26 17:30:51,008 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 [2021-01-26 17:30:51,008 INFO L78 Accepts]: Start accepts. Automaton has 2067 states. Word has length 48 [2021-01-26 17:30:51,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:30:51,008 INFO L481 AbstractCegarLoop]: Abstraction has 2067 states. [2021-01-26 17:30:51,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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) [2021-01-26 17:30:51,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states. [2021-01-26 17:30:51,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-01-26 17:30:51,016 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:30:51,016 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] [2021-01-26 17:30:51,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-26 17:30:51,016 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:30:51,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:30:51,017 INFO L82 PathProgramCache]: Analyzing trace with hash -207995556, now seen corresponding path program 1 times [2021-01-26 17:30:51,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:30:51,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198003193] [2021-01-26 17:30:51,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:30:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:30:51,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:30:51,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198003193] [2021-01-26 17:30:51,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:30:51,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-26 17:30:51,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577790013] [2021-01-26 17:30:51,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-26 17:30:51,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:30:51,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-26 17:30:51,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-26 17:30:51,153 INFO L87 Difference]: Start difference. First operand 2067 states. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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) [2021-01-26 17:30:51,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:30:51,402 INFO L93 Difference]: Finished difference Result 1446 states and 4199 transitions. [2021-01-26 17:30:51,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-26 17:30:51,434 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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 [2021-01-26 17:30:51,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:30:51,437 INFO L225 Difference]: With dead ends: 1446 [2021-01-26 17:30:51,437 INFO L226 Difference]: Without dead ends: 714 [2021-01-26 17:30:51,438 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-01-26 17:30:51,438 INFO L78 Accepts]: Start accepts. Automaton has 714 states. Word has length 50 [2021-01-26 17:30:51,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:30:51,438 INFO L481 AbstractCegarLoop]: Abstraction has 714 states. [2021-01-26 17:30:51,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 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) [2021-01-26 17:30:51,439 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states. [2021-01-26 17:30:51,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-26 17:30:51,441 INFO L496 BasicCegarLoop]: Found error trace [2021-01-26 17:30:51,441 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] [2021-01-26 17:30:51,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-26 17:30:51,441 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-26 17:30:51,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-26 17:30:51,442 INFO L82 PathProgramCache]: Analyzing trace with hash 848095813, now seen corresponding path program 1 times [2021-01-26 17:30:51,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-26 17:30:51,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058680337] [2021-01-26 17:30:51,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-26 17:30:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-26 17:30:51,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-26 17:30:51,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058680337] [2021-01-26 17:30:51,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-26 17:30:51,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-26 17:30:51,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463676480] [2021-01-26 17:30:51,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-26 17:30:51,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-26 17:30:51,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-26 17:30:51,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-26 17:30:51,557 INFO L87 Difference]: Start difference. First operand 714 states. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2021-01-26 17:30:51,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-26 17:30:51,652 INFO L93 Difference]: Finished difference Result 606 states and 1684 transitions. [2021-01-26 17:30:51,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-26 17:30:51,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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 52 [2021-01-26 17:30:51,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-26 17:30:51,654 INFO L225 Difference]: With dead ends: 606 [2021-01-26 17:30:51,654 INFO L226 Difference]: Without dead ends: 0 [2021-01-26 17:30:51,654 INFO L769 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 [2021-01-26 17:30:51,654 INFO L78 Accepts]: Start accepts. Automaton has 0 states. Word has length 52 [2021-01-26 17:30:51,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-26 17:30:51,655 INFO L481 AbstractCegarLoop]: Abstraction has 0 states. [2021-01-26 17:30:51,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2021-01-26 17:30:51,655 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states. [2021-01-26 17:30:51,655 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-26 17:30:51,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-26 17:30:51,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.01 05:30:51 BasicIcfg [2021-01-26 17:30:51,661 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-26 17:30:51,663 INFO L168 Benchmark]: Toolchain (without parser) took 6089.77 ms. Allocated memory was 302.0 MB in the beginning and 643.8 MB in the end (delta: 341.8 MB). Free memory was 276.2 MB in the beginning and 520.2 MB in the end (delta: -244.0 MB). Peak memory consumption was 98.2 MB. Max. memory is 16.0 GB. [2021-01-26 17:30:51,664 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 302.0 MB. Free memory was 272.1 MB in the beginning and 272.0 MB in the end (delta: 64.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-26 17:30:51,665 INFO L168 Benchmark]: CACSL2BoogieTranslator took 656.73 ms. Allocated memory is still 302.0 MB. Free memory was 275.2 MB in the beginning and 244.4 MB in the end (delta: 30.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2021-01-26 17:30:51,665 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.28 ms. Allocated memory is still 302.0 MB. Free memory was 244.4 MB in the beginning and 284.4 MB in the end (delta: -40.0 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. [2021-01-26 17:30:51,666 INFO L168 Benchmark]: Boogie Preprocessor took 63.59 ms. Allocated memory is still 302.0 MB. Free memory was 284.4 MB in the beginning and 283.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-26 17:30:51,667 INFO L168 Benchmark]: RCFGBuilder took 545.25 ms. Allocated memory is still 302.0 MB. Free memory was 283.4 MB in the beginning and 260.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-01-26 17:30:51,668 INFO L168 Benchmark]: TraceAbstraction took 4725.85 ms. Allocated memory was 302.0 MB in the beginning and 643.8 MB in the end (delta: 341.8 MB). Free memory was 260.3 MB in the beginning and 520.2 MB in the end (delta: -259.9 MB). Peak memory consumption was 83.0 MB. Max. memory is 16.0 GB. [2021-01-26 17:30:51,672 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 302.0 MB. Free memory was 272.1 MB in the beginning and 272.0 MB in the end (delta: 64.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 656.73 ms. Allocated memory is still 302.0 MB. Free memory was 275.2 MB in the beginning and 244.4 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 71.28 ms. Allocated memory is still 302.0 MB. Free memory was 244.4 MB in the beginning and 284.4 MB in the end (delta: -40.0 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 63.59 ms. Allocated memory is still 302.0 MB. Free memory was 284.4 MB in the beginning and 283.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 545.25 ms. Allocated memory is still 302.0 MB. Free memory was 283.4 MB in the beginning and 260.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4725.85 ms. Allocated memory was 302.0 MB in the beginning and 643.8 MB in the end (delta: 341.8 MB). Free memory was 260.3 MB in the beginning and 520.2 MB in the end (delta: -259.9 MB). Peak memory consumption was 83.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.6s, HoareTripleCheckerStatistics: 736 SDtfs, 1072 SDslu, 2364 SDs, 0 SdLazy, 303 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8447occurred 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, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 371 NumberOfCodeBlocks, 371 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 363 ConstructedInterpolants, 0 QuantifiedInterpolants, 43187 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...