/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-keepdead.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 21:12:16,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 21:12:16,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 21:12:16,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 21:12:16,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 21:12:16,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 21:12:16,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 21:12:16,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 21:12:16,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 21:12:16,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 21:12:16,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 21:12:16,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 21:12:16,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 21:12:16,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 21:12:16,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 21:12:16,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 21:12:16,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 21:12:16,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 21:12:16,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 21:12:16,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 21:12:16,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 21:12:16,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 21:12:16,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 21:12:16,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 21:12:16,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-20 21:12:16,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 21:12:16,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 21:12:16,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 21:12:16,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 21:12:16,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 21:12:16,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 21:12:16,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 21:12:16,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 21:12:16,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 21:12:16,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 21:12:16,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 21:12:16,489 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-keepdead.epf [2021-01-20 21:12:16,517 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 21:12:16,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 21:12:16,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 21:12:16,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 21:12:16,519 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 21:12:16,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 21:12:16,520 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 21:12:16,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 21:12:16,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 21:12:16,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 21:12:16,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 21:12:16,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 21:12:16,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 21:12:16,521 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 21:12:16,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 21:12:16,522 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 21:12:16,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 21:12:16,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 21:12:16,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 21:12:16,522 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 21:12:16,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 21:12:16,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 21:12:16,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 21:12:16,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 21:12:16,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 21:12:16,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 21:12:16,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 21:12:16,524 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 21:12:16,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 21:12:16,524 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2021-01-20 21:12:16,525 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 21:12:16,525 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 21:12:16,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 21:12:16,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 21:12:16,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 21:12:16,921 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 21:12:16,922 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 21:12:16,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i [2021-01-20 21:12:17,008 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2105d5e1e/87bb89f5465c49828b228cd7287f9693/FLAG80a1ee34c [2021-01-20 21:12:17,706 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 21:12:17,707 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i [2021-01-20 21:12:17,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2105d5e1e/87bb89f5465c49828b228cd7287f9693/FLAG80a1ee34c [2021-01-20 21:12:18,004 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2105d5e1e/87bb89f5465c49828b228cd7287f9693 [2021-01-20 21:12:18,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 21:12:18,013 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 21:12:18,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 21:12:18,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 21:12:18,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 21:12:18,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:12:18" (1/1) ... [2021-01-20 21:12:18,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5841a0b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:12:18, skipping insertion in model container [2021-01-20 21:12:18,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:12:18" (1/1) ... [2021-01-20 21:12:18,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 21:12:18,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 21:12:18,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 21:12:18,511 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 21:12:18,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 21:12:18,801 INFO L208 MainTranslator]: Completed translation [2021-01-20 21:12:18,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:12:18 WrapperNode [2021-01-20 21:12:18,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 21:12:18,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 21:12:18,806 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 21:12:18,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 21:12:18,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:12:18" (1/1) ... [2021-01-20 21:12:18,858 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:12:18" (1/1) ... [2021-01-20 21:12:18,896 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 21:12:18,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 21:12:18,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 21:12:18,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 21:12:18,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:12:18" (1/1) ... [2021-01-20 21:12:18,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:12:18" (1/1) ... [2021-01-20 21:12:18,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:12:18" (1/1) ... [2021-01-20 21:12:18,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:12:18" (1/1) ... [2021-01-20 21:12:18,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:12:18" (1/1) ... [2021-01-20 21:12:18,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:12:18" (1/1) ... [2021-01-20 21:12:18,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:12:18" (1/1) ... [2021-01-20 21:12:18,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 21:12:18,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 21:12:18,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 21:12:18,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 21:12:18,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:12:18" (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 21:12:19,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 21:12:19,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 21:12:19,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 21:12:19,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 21:12:19,043 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-20 21:12:19,043 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-20 21:12:19,043 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-20 21:12:19,043 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-20 21:12:19,043 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-20 21:12:19,044 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-20 21:12:19,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 21:12:19,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 21:12:19,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 21:12:19,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 21:12:19,046 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 21:12:19,572 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 21:12:19,572 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 21:12:19,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:12:19 BoogieIcfgContainer [2021-01-20 21:12:19,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 21:12:19,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 21:12:19,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 21:12:19,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 21:12:19,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 09:12:18" (1/3) ... [2021-01-20 21:12:19,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2618a46e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:12:19, skipping insertion in model container [2021-01-20 21:12:19,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:12:18" (2/3) ... [2021-01-20 21:12:19,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2618a46e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:12:19, skipping insertion in model container [2021-01-20 21:12:19,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:12:19" (3/3) ... [2021-01-20 21:12:19,584 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_tso.opt.i [2021-01-20 21:12:19,601 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 21:12:19,601 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 21:12:19,605 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 21:12:19,606 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 21:12:19,646 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,647 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,647 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,647 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,647 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,648 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,648 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,648 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,649 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,649 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,649 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,649 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,650 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,650 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,650 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,650 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,650 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,651 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,651 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,651 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,651 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,652 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,652 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,652 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,653 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,653 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,653 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,653 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,654 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,654 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,654 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,654 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,655 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,655 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,655 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,655 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,658 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,659 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,659 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,659 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,668 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,669 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,669 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,669 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,672 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,673 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,673 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,673 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 21:12:19,676 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 21:12:19,691 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-20 21:12:19,715 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 21:12:19,716 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 21:12:19,716 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 21:12:19,716 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 21:12:19,716 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 21:12:19,717 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 21:12:19,717 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 21:12:19,717 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 21:12:19,730 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 171 flow [2021-01-20 21:12:20,649 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 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 21:12:20,693 INFO L276 IsEmpty]: Start isEmpty. Operand has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 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 21:12:20,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-20 21:12:20,751 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:12:20,755 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] [2021-01-20 21:12:20,756 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:12:20,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:12:20,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1699432098, now seen corresponding path program 1 times [2021-01-20 21:12:20,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:12:20,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636890781] [2021-01-20 21:12:20,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:12:21,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:12:21,309 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 21:12:21,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636890781] [2021-01-20 21:12:21,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:12:21,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:12:21,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231738073] [2021-01-20 21:12:21,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:12:21,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:12:21,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:12:21,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:12:21,360 INFO L87 Difference]: Start difference. First operand has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 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) [2021-01-20 21:12:21,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:12:21,909 INFO L93 Difference]: Finished difference Result 13207 states and 46043 transitions. [2021-01-20 21:12:21,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:12:21,912 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 [2021-01-20 21:12:21,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:12:21,915 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 21:12:21,915 INFO L78 Accepts]: Start accepts. Automaton has 13207 states and 46043 transitions. Word has length 41 [2021-01-20 21:12:21,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:12:21,917 INFO L481 AbstractCegarLoop]: Abstraction has 13207 states and 46043 transitions. [2021-01-20 21:12:21,918 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) [2021-01-20 21:12:21,918 INFO L276 IsEmpty]: Start isEmpty. Operand 13207 states and 46043 transitions. [2021-01-20 21:12:21,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-20 21:12:21,938 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:12:21,939 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 21:12:21,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 21:12:21,939 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:12:21,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:12:21,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1525823679, now seen corresponding path program 1 times [2021-01-20 21:12:21,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:12:21,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569169258] [2021-01-20 21:12:21,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:12:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:12:22,170 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 21:12:22,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569169258] [2021-01-20 21:12:22,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:12:22,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:12:22,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741907904] [2021-01-20 21:12:22,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:12:22,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:12:22,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:12:22,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:12:22,175 INFO L87 Difference]: Start difference. First operand 13207 states and 46043 transitions. 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 21:12:22,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:12:22,637 INFO L93 Difference]: Finished difference Result 18807 states and 65123 transitions. [2021-01-20 21:12:22,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:12:22,638 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 21:12:22,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:12:22,639 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 21:12:22,639 INFO L78 Accepts]: Start accepts. Automaton has 18807 states and 65123 transitions. Word has length 43 [2021-01-20 21:12:22,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:12:22,640 INFO L481 AbstractCegarLoop]: Abstraction has 18807 states and 65123 transitions. [2021-01-20 21:12:22,640 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 21:12:22,641 INFO L276 IsEmpty]: Start isEmpty. Operand 18807 states and 65123 transitions. [2021-01-20 21:12:22,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-20 21:12:22,661 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:12:22,661 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] [2021-01-20 21:12:22,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 21:12:22,661 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:12:22,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:12:22,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1998767231, now seen corresponding path program 1 times [2021-01-20 21:12:22,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:12:22,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850919272] [2021-01-20 21:12:22,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:12:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:12:23,055 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 21:12:23,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850919272] [2021-01-20 21:12:23,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:12:23,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:12:23,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822752911] [2021-01-20 21:12:23,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:12:23,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:12:23,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:12:23,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:12:23,058 INFO L87 Difference]: Start difference. First operand 18807 states and 65123 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:12:23,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:12:23,720 INFO L93 Difference]: Finished difference Result 26699 states and 91291 transitions. [2021-01-20 21:12:23,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-20 21:12:23,721 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 [2021-01-20 21:12:23,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:12:23,723 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2021-01-20 21:12:23,723 INFO L78 Accepts]: Start accepts. Automaton has 26699 states and 91291 transitions. Word has length 44 [2021-01-20 21:12:23,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:12:23,723 INFO L481 AbstractCegarLoop]: Abstraction has 26699 states and 91291 transitions. [2021-01-20 21:12:23,724 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) [2021-01-20 21:12:23,724 INFO L276 IsEmpty]: Start isEmpty. Operand 26699 states and 91291 transitions. [2021-01-20 21:12:23,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-01-20 21:12:23,765 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:12:23,765 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] [2021-01-20 21:12:23,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 21:12:23,766 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:12:23,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:12:23,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1999585892, now seen corresponding path program 1 times [2021-01-20 21:12:23,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:12:23,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622911145] [2021-01-20 21:12:23,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:12:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:12:23,994 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 21:12:23,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622911145] [2021-01-20 21:12:23,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:12:23,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:12:23,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023050378] [2021-01-20 21:12:23,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:12:23,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:12:23,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:12:23,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:12:23,997 INFO L87 Difference]: Start difference. First operand 26699 states and 91291 transitions. 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) [2021-01-20 21:12:24,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:12:24,501 INFO L93 Difference]: Finished difference Result 44051 states and 148597 transitions. [2021-01-20 21:12:24,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 21:12:24,501 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 [2021-01-20 21:12:24,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:12:24,502 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 21:12:24,503 INFO L78 Accepts]: Start accepts. Automaton has 44051 states and 148597 transitions. Word has length 47 [2021-01-20 21:12:24,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:12:24,503 INFO L481 AbstractCegarLoop]: Abstraction has 44051 states and 148597 transitions. [2021-01-20 21:12:24,503 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) [2021-01-20 21:12:24,504 INFO L276 IsEmpty]: Start isEmpty. Operand 44051 states and 148597 transitions. [2021-01-20 21:12:24,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-20 21:12:24,554 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:12:24,554 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 21:12:24,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 21:12:24,555 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:12:24,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:12:24,555 INFO L82 PathProgramCache]: Analyzing trace with hash 2040811581, now seen corresponding path program 1 times [2021-01-20 21:12:24,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:12:24,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282161278] [2021-01-20 21:12:24,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:12:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:12:24,680 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 21:12:24,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282161278] [2021-01-20 21:12:24,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:12:24,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:12:24,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790879072] [2021-01-20 21:12:24,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:12:24,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:12:24,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:12:24,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:12:24,683 INFO L87 Difference]: Start difference. First operand 44051 states and 148597 transitions. 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 21:12:25,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:12:25,410 INFO L93 Difference]: Finished difference Result 33418 states and 109775 transitions. [2021-01-20 21:12:25,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 21:12:25,411 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 21:12:25,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:12:25,414 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 21:12:25,414 INFO L78 Accepts]: Start accepts. Automaton has 33418 states and 109775 transitions. Word has length 48 [2021-01-20 21:12:25,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:12:25,414 INFO L481 AbstractCegarLoop]: Abstraction has 33418 states and 109775 transitions. [2021-01-20 21:12:25,414 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 21:12:25,415 INFO L276 IsEmpty]: Start isEmpty. Operand 33418 states and 109775 transitions. [2021-01-20 21:12:25,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-20 21:12:25,488 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:12:25,488 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 21:12:25,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 21:12:25,488 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:12:25,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:12:25,489 INFO L82 PathProgramCache]: Analyzing trace with hash 482269470, now seen corresponding path program 1 times [2021-01-20 21:12:25,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:12:25,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528803227] [2021-01-20 21:12:25,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:12:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:12:25,635 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 21:12:25,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528803227] [2021-01-20 21:12:25,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:12:25,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 21:12:25,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065076339] [2021-01-20 21:12:25,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 21:12:25,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:12:25,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 21:12:25,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 21:12:25,641 INFO L87 Difference]: Start difference. First operand 33418 states and 109775 transitions. 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 21:12:26,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:12:26,074 INFO L93 Difference]: Finished difference Result 19159 states and 61248 transitions. [2021-01-20 21:12:26,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-20 21:12:26,075 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 21:12:26,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:12:26,075 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-01-20 21:12:26,076 INFO L78 Accepts]: Start accepts. Automaton has 19159 states and 61248 transitions. Word has length 49 [2021-01-20 21:12:26,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:12:26,076 INFO L481 AbstractCegarLoop]: Abstraction has 19159 states and 61248 transitions. [2021-01-20 21:12:26,077 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 21:12:26,077 INFO L276 IsEmpty]: Start isEmpty. Operand 19159 states and 61248 transitions. [2021-01-20 21:12:26,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-20 21:12:26,110 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:12:26,110 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 21:12:26,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 21:12:26,110 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:12:26,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:12:26,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1054282365, now seen corresponding path program 1 times [2021-01-20 21:12:26,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:12:26,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397939484] [2021-01-20 21:12:26,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:12:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:12:26,235 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 21:12:26,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397939484] [2021-01-20 21:12:26,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:12:26,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-20 21:12:26,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843628475] [2021-01-20 21:12:26,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 21:12:26,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:12:26,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 21:12:26,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-20 21:12:26,238 INFO L87 Difference]: Start difference. First operand 19159 states and 61248 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:12:26,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:12:26,744 INFO L93 Difference]: Finished difference Result 12427 states and 39393 transitions. [2021-01-20 21:12:26,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-20 21:12:26,745 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 21:12:26,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:12:26,746 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2021-01-20 21:12:26,746 INFO L78 Accepts]: Start accepts. Automaton has 12427 states and 39393 transitions. Word has length 51 [2021-01-20 21:12:26,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:12:26,747 INFO L481 AbstractCegarLoop]: Abstraction has 12427 states and 39393 transitions. [2021-01-20 21:12:26,747 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 21:12:26,747 INFO L276 IsEmpty]: Start isEmpty. Operand 12427 states and 39393 transitions. [2021-01-20 21:12:26,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-20 21:12:26,764 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 21:12:26,764 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] [2021-01-20 21:12:26,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-20 21:12:26,765 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 21:12:26,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 21:12:26,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1449884732, now seen corresponding path program 1 times [2021-01-20 21:12:26,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 21:12:26,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680002212] [2021-01-20 21:12:26,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 21:12:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 21:12:26,874 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 21:12:26,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680002212] [2021-01-20 21:12:26,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 21:12:26,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 21:12:26,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769460209] [2021-01-20 21:12:26,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 21:12:26,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 21:12:26,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 21:12:26,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 21:12:26,879 INFO L87 Difference]: Start difference. First operand 12427 states and 39393 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:12:27,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 21:12:27,176 INFO L93 Difference]: Finished difference Result 18639 states and 58533 transitions. [2021-01-20 21:12:27,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-20 21:12:27,177 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-01-20 21:12:27,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 21:12:27,178 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-20 21:12:27,178 INFO L78 Accepts]: Start accepts. Automaton has 18639 states and 58533 transitions. Word has length 53 [2021-01-20 21:12:27,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 21:12:27,179 INFO L481 AbstractCegarLoop]: Abstraction has 18639 states and 58533 transitions. [2021-01-20 21:12:27,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 21:12:27,179 INFO L276 IsEmpty]: Start isEmpty. Operand 18639 states and 58533 transitions. [2021-01-20 21:12:27,223 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 21:12:27,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-20 21:12:27,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 09:12:27 BasicIcfg [2021-01-20 21:12:27,229 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 21:12:27,232 INFO L168 Benchmark]: Toolchain (without parser) took 9218.92 ms. Allocated memory was 302.0 MB in the beginning and 3.3 GB in the end (delta: 3.0 GB). Free memory was 276.6 MB in the beginning and 2.9 GB in the end (delta: -2.7 GB). Peak memory consumption was 329.9 MB. Max. memory is 16.0 GB. [2021-01-20 21:12:27,233 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 302.0 MB. Free memory is still 272.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 21:12:27,234 INFO L168 Benchmark]: CACSL2BoogieTranslator took 786.58 ms. Allocated memory is still 302.0 MB. Free memory was 276.3 MB in the beginning and 276.7 MB in the end (delta: -388.8 kB). Peak memory consumption was 28.0 MB. Max. memory is 16.0 GB. [2021-01-20 21:12:27,234 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.80 ms. Allocated memory is still 302.0 MB. Free memory was 276.7 MB in the beginning and 274.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 21:12:27,235 INFO L168 Benchmark]: Boogie Preprocessor took 56.25 ms. Allocated memory is still 302.0 MB. Free memory was 274.6 MB in the beginning and 273.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-01-20 21:12:27,236 INFO L168 Benchmark]: RCFGBuilder took 613.84 ms. Allocated memory is still 302.0 MB. Free memory was 273.6 MB in the beginning and 250.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-01-20 21:12:27,237 INFO L168 Benchmark]: TraceAbstraction took 7652.90 ms. Allocated memory was 302.0 MB in the beginning and 3.3 GB in the end (delta: 3.0 GB). Free memory was 249.4 MB in the beginning and 2.9 GB in the end (delta: -2.7 GB). Peak memory consumption was 304.0 MB. Max. memory is 16.0 GB. [2021-01-20 21:12:27,241 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 302.0 MB. Free memory is still 272.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 786.58 ms. Allocated memory is still 302.0 MB. Free memory was 276.3 MB in the beginning and 276.7 MB in the end (delta: -388.8 kB). Peak memory consumption was 28.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 94.80 ms. Allocated memory is still 302.0 MB. Free memory was 276.7 MB in the beginning and 274.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 56.25 ms. Allocated memory is still 302.0 MB. Free memory was 274.6 MB in the beginning and 273.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 613.84 ms. Allocated memory is still 302.0 MB. Free memory was 273.6 MB in the beginning and 250.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 7652.90 ms. Allocated memory was 302.0 MB in the beginning and 3.3 GB in the end (delta: 3.0 GB). Free memory was 249.4 MB in the beginning and 2.9 GB in the end (delta: -2.7 GB). Peak memory consumption was 304.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 904 SDtfs, 1661 SDslu, 3058 SDs, 0 SdLazy, 325 SolverSat, 81 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44051occurred in iteration=4, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 376 NumberOfCodeBlocks, 376 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 368 ConstructedInterpolants, 0 QuantifiedInterpolants, 43970 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...