/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-16 15:46:17,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-16 15:46:17,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-16 15:46:17,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-16 15:46:17,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-16 15:46:17,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-16 15:46:17,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-16 15:46:17,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-16 15:46:17,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-16 15:46:17,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-16 15:46:17,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-16 15:46:17,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-16 15:46:17,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-16 15:46:17,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-16 15:46:17,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-16 15:46:17,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-16 15:46:17,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-16 15:46:17,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-16 15:46:17,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-16 15:46:17,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-16 15:46:17,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-16 15:46:17,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-16 15:46:17,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-16 15:46:17,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-16 15:46:17,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-16 15:46:17,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-16 15:46:17,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-16 15:46:17,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-16 15:46:17,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-16 15:46:17,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-16 15:46:17,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-16 15:46:17,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-16 15:46:17,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-16 15:46:17,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-16 15:46:17,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-16 15:46:17,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-16 15:46:17,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-16 15:46:17,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-16 15:46:17,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-16 15:46:17,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-16 15:46:17,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-16 15:46:17,441 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-Delay.epf [2021-06-16 15:46:17,461 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-16 15:46:17,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-16 15:46:17,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-16 15:46:17,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-16 15:46:17,463 INFO L138 SettingsManager]: * Use SBE=true [2021-06-16 15:46:17,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-16 15:46:17,464 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-16 15:46:17,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-16 15:46:17,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-16 15:46:17,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-16 15:46:17,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-16 15:46:17,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-16 15:46:17,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-16 15:46:17,465 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-16 15:46:17,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-16 15:46:17,465 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-16 15:46:17,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-16 15:46:17,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-16 15:46:17,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-16 15:46:17,466 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-16 15:46:17,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-16 15:46:17,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 15:46:17,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-16 15:46:17,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-16 15:46:17,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-16 15:46:17,467 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-16 15:46:17,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-16 15:46:17,467 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-16 15:46:17,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-16 15:46:17,467 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-16 15:46:17,467 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-16 15:46:17,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-16 15:46:17,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-16 15:46:17,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-16 15:46:17,795 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-16 15:46:17,796 INFO L275 PluginConnector]: CDTParser initialized [2021-06-16 15:46:17,798 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2021-06-16 15:46:17,855 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84d873435/7ced8aad36a84945839de99d352a5d23/FLAGabfe5e40d [2021-06-16 15:46:18,312 INFO L306 CDTParser]: Found 1 translation units. [2021-06-16 15:46:18,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i [2021-06-16 15:46:18,327 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84d873435/7ced8aad36a84945839de99d352a5d23/FLAGabfe5e40d [2021-06-16 15:46:18,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84d873435/7ced8aad36a84945839de99d352a5d23 [2021-06-16 15:46:18,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-16 15:46:18,346 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-16 15:46:18,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-16 15:46:18,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-16 15:46:18,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-16 15:46:18,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.06 03:46:18" (1/1) ... [2021-06-16 15:46:18,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ab42f1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:46:18, skipping insertion in model container [2021-06-16 15:46:18,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.06 03:46:18" (1/1) ... [2021-06-16 15:46:18,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-16 15:46:18,395 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-16 15:46:18,571 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i[950,963] [2021-06-16 15:46:18,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-16 15:46:18,756 INFO L203 MainTranslator]: Completed pre-run [2021-06-16 15:46:18,764 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_tso.oepc.i[950,963] [2021-06-16 15:46:18,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-16 15:46:18,858 INFO L208 MainTranslator]: Completed translation [2021-06-16 15:46:18,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:46:18 WrapperNode [2021-06-16 15:46:18,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-16 15:46:18,859 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-16 15:46:18,859 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-16 15:46:18,859 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-16 15:46:18,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:46:18" (1/1) ... [2021-06-16 15:46:18,872 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:46:18" (1/1) ... [2021-06-16 15:46:18,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-16 15:46:18,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-16 15:46:18,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-16 15:46:18,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-16 15:46:18,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:46:18" (1/1) ... [2021-06-16 15:46:18,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:46:18" (1/1) ... [2021-06-16 15:46:18,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:46:18" (1/1) ... [2021-06-16 15:46:18,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:46:18" (1/1) ... [2021-06-16 15:46:18,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:46:18" (1/1) ... [2021-06-16 15:46:18,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:46:18" (1/1) ... [2021-06-16 15:46:18,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:46:18" (1/1) ... [2021-06-16 15:46:18,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-16 15:46:18,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-16 15:46:18,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-16 15:46:18,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-16 15:46:18,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:46:18" (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 [2021-06-16 15:46:18,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-16 15:46:18,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-16 15:46:18,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-16 15:46:18,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-16 15:46:18,988 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-16 15:46:18,988 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-16 15:46:18,989 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-16 15:46:18,989 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-16 15:46:18,989 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-16 15:46:18,989 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-16 15:46:18,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-16 15:46:18,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-16 15:46:18,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-16 15:46:18,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-16 15:46:18,990 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-16 15:46:19,339 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-16 15:46:19,340 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-16 15:46:19,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 03:46:19 BoogieIcfgContainer [2021-06-16 15:46:19,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-16 15:46:19,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-16 15:46:19,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-16 15:46:19,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-16 15:46:19,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.06 03:46:18" (1/3) ... [2021-06-16 15:46:19,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d0f326d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 03:46:19, skipping insertion in model container [2021-06-16 15:46:19,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:46:18" (2/3) ... [2021-06-16 15:46:19,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d0f326d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 03:46:19, skipping insertion in model container [2021-06-16 15:46:19,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 03:46:19" (3/3) ... [2021-06-16 15:46:19,349 INFO L111 eAbstractionObserver]: Analyzing ICFG safe008_tso.oepc.i [2021-06-16 15:46:19,353 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-16 15:46:19,353 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-16 15:46:19,353 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-16 15:46:19,353 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-16 15:46:19,378 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,379 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,379 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,379 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,379 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,379 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,379 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,379 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,380 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,380 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,380 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,380 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,380 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,380 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,380 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,381 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,381 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,382 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,383 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,384 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,387 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,387 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,388 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,388 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,389 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,389 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,389 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,389 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,389 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,389 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,389 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,389 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,390 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,390 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,390 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,390 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,392 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,392 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,392 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,392 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,396 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,396 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,396 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,396 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,397 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,397 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,398 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,398 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:46:19,401 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-16 15:46:19,416 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-16 15:46:19,435 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 15:46:19,436 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 15:46:19,436 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 15:46:19,436 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 15:46:19,436 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 15:46:19,436 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 15:46:19,436 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 15:46:19,436 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-16 15:46:20,170 INFO L276 IsEmpty]: Start isEmpty. Operand has 9332 states, 8010 states have (on average 2.3213483146067415) internal successors, (18594), 9331 states have internal predecessors, (18594), 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) [2021-06-16 15:46:20,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-06-16 15:46:20,190 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:46:20,190 INFO L472 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] [2021-06-16 15:46:20,191 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:46:20,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:46:20,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1432389661, now seen corresponding path program 1 times [2021-06-16 15:46:20,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:46:20,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223886257] [2021-06-16 15:46:20,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:46:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:46:20,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:20,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:46:20,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:20,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:46:20,545 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-16 15:46:20,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 15:46:20,572 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:46:20,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:46:20,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:20,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:46:20,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:20,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:46:20,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:20,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:46:20,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:46:20,619 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:46:20,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223886257] [2021-06-16 15:46:20,620 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223886257] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:46:20,620 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:46:20,620 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 15:46:20,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672399550] [2021-06-16 15:46:20,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 15:46:20,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:46:20,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 15:46:20,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-16 15:46:20,656 INFO L87 Difference]: Start difference. First operand has 9332 states, 8010 states have (on average 2.3213483146067415) internal successors, (18594), 9331 states have internal predecessors, (18594), 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 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) [2021-06-16 15:46:21,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:46:21,014 INFO L93 Difference]: Finished difference Result 16683 states and 33346 transitions. [2021-06-16 15:46:21,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 15:46:21,017 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 [2021-06-16 15:46:21,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:46:21,050 INFO L225 Difference]: With dead ends: 16683 [2021-06-16 15:46:21,050 INFO L226 Difference]: Without dead ends: 2662 [2021-06-16 15:46:21,056 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 186.5ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-16 15:46:21,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2662 states. [2021-06-16 15:46:21,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2662 to 2312. [2021-06-16 15:46:21,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2312 states, 2277 states have (on average 2.204655248133509) internal successors, (5020), 2311 states have internal predecessors, (5020), 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) [2021-06-16 15:46:21,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 5020 transitions. [2021-06-16 15:46:21,181 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 5020 transitions. Word has length 49 [2021-06-16 15:46:21,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:46:21,181 INFO L482 AbstractCegarLoop]: Abstraction has 2312 states and 5020 transitions. [2021-06-16 15:46:21,182 INFO L483 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) [2021-06-16 15:46:21,182 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 5020 transitions. [2021-06-16 15:46:21,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-16 15:46:21,186 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:46:21,186 INFO L472 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] [2021-06-16 15:46:21,186 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-16 15:46:21,186 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:46:21,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:46:21,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1333972324, now seen corresponding path program 1 times [2021-06-16 15:46:21,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:46:21,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365355157] [2021-06-16 15:46:21,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:46:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:46:21,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:21,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:46:21,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:21,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:46:21,279 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-16 15:46:21,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 15:46:21,293 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:46:21,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:46:21,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:21,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:46:21,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:21,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:46:21,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:21,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:46:21,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:46:21,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:46:21,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365355157] [2021-06-16 15:46:21,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365355157] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:46:21,333 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:46:21,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 15:46:21,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388736415] [2021-06-16 15:46:21,335 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 15:46:21,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:46:21,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 15:46:21,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-16 15:46:21,336 INFO L87 Difference]: Start difference. First operand 2312 states and 5020 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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) [2021-06-16 15:46:21,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:46:21,589 INFO L93 Difference]: Finished difference Result 3872 states and 8943 transitions. [2021-06-16 15:46:21,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-16 15:46:21,589 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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 [2021-06-16 15:46:21,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:46:21,599 INFO L225 Difference]: With dead ends: 3872 [2021-06-16 15:46:21,599 INFO L226 Difference]: Without dead ends: 2772 [2021-06-16 15:46:21,600 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 208.0ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-06-16 15:46:21,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2021-06-16 15:46:21,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 2312. [2021-06-16 15:46:21,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2312 states, 2277 states have (on average 2.2011418533157663) internal successors, (5012), 2311 states have internal predecessors, (5012), 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) [2021-06-16 15:46:21,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 5012 transitions. [2021-06-16 15:46:21,649 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 5012 transitions. Word has length 51 [2021-06-16 15:46:21,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:46:21,649 INFO L482 AbstractCegarLoop]: Abstraction has 2312 states and 5012 transitions. [2021-06-16 15:46:21,650 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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) [2021-06-16 15:46:21,650 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 5012 transitions. [2021-06-16 15:46:21,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-16 15:46:21,654 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:46:21,654 INFO L472 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] [2021-06-16 15:46:21,654 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-16 15:46:21,654 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:46:21,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:46:21,660 INFO L82 PathProgramCache]: Analyzing trace with hash -2054544283, now seen corresponding path program 1 times [2021-06-16 15:46:21,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:46:21,661 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992976157] [2021-06-16 15:46:21,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:46:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:46:21,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:21,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:46:21,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:21,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:46:21,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:21,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:46:21,727 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:46:21,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:46:21,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:21,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:46:21,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:21,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:46:21,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:21,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:46:21,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:46:21,758 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:46:21,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992976157] [2021-06-16 15:46:21,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992976157] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:46:21,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:46:21,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 15:46:21,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630411826] [2021-06-16 15:46:21,758 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 15:46:21,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:46:21,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 15:46:21,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-16 15:46:21,759 INFO L87 Difference]: Start difference. First operand 2312 states and 5012 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:46:21,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:46:21,890 INFO L93 Difference]: Finished difference Result 2832 states and 6224 transitions. [2021-06-16 15:46:21,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 15:46:21,891 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-16 15:46:21,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:46:21,896 INFO L225 Difference]: With dead ends: 2832 [2021-06-16 15:46:21,896 INFO L226 Difference]: Without dead ends: 1459 [2021-06-16 15:46:21,896 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 119.9ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-06-16 15:46:21,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2021-06-16 15:46:21,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1459. [2021-06-16 15:46:21,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1439 states have (on average 2.2279360667129953) internal successors, (3206), 1458 states have internal predecessors, (3206), 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) [2021-06-16 15:46:21,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 3206 transitions. [2021-06-16 15:46:21,924 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 3206 transitions. Word has length 53 [2021-06-16 15:46:21,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:46:21,926 INFO L482 AbstractCegarLoop]: Abstraction has 1459 states and 3206 transitions. [2021-06-16 15:46:21,926 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:46:21,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 3206 transitions. [2021-06-16 15:46:21,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-16 15:46:21,928 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:46:21,928 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:46:21,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-16 15:46:21,929 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:46:21,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:46:21,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1926858969, now seen corresponding path program 1 times [2021-06-16 15:46:21,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:46:21,932 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906560753] [2021-06-16 15:46:21,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:46:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:46:21,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:21,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:46:21,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:21,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:46:21,992 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-16 15:46:21,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-16 15:46:22,001 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:46:22,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:46:22,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:22,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:46:22,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:22,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:46:22,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:22,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:46:22,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:46:22,034 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:46:22,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906560753] [2021-06-16 15:46:22,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906560753] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:46:22,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:46:22,035 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 15:46:22,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096338826] [2021-06-16 15:46:22,036 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 15:46:22,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:46:22,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 15:46:22,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-16 15:46:22,036 INFO L87 Difference]: Start difference. First operand 1459 states and 3206 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2021-06-16 15:46:22,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:46:22,196 INFO L93 Difference]: Finished difference Result 1929 states and 4521 transitions. [2021-06-16 15:46:22,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 15:46:22,197 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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 54 [2021-06-16 15:46:22,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:46:22,202 INFO L225 Difference]: With dead ends: 1929 [2021-06-16 15:46:22,202 INFO L226 Difference]: Without dead ends: 1529 [2021-06-16 15:46:22,203 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 153.7ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-16 15:46:22,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2021-06-16 15:46:22,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1219. [2021-06-16 15:46:22,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 1199 states have (on average 2.218515429524604) internal successors, (2660), 1218 states have internal predecessors, (2660), 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) [2021-06-16 15:46:22,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 2660 transitions. [2021-06-16 15:46:22,232 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 2660 transitions. Word has length 54 [2021-06-16 15:46:22,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:46:22,233 INFO L482 AbstractCegarLoop]: Abstraction has 1219 states and 2660 transitions. [2021-06-16 15:46:22,233 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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) [2021-06-16 15:46:22,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 2660 transitions. [2021-06-16 15:46:22,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-06-16 15:46:22,237 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:46:22,237 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:46:22,237 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-16 15:46:22,237 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:46:22,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:46:22,237 INFO L82 PathProgramCache]: Analyzing trace with hash -387290776, now seen corresponding path program 1 times [2021-06-16 15:46:22,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:46:22,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350431073] [2021-06-16 15:46:22,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:46:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:46:22,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:22,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:46:22,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:22,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:46:22,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:22,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:46:22,295 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:46:22,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:46:22,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:22,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:46:22,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:22,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:46:22,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:22,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:46:22,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:46:22,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:46:22,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350431073] [2021-06-16 15:46:22,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350431073] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:46:22,330 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:46:22,330 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 15:46:22,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371980248] [2021-06-16 15:46:22,331 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 15:46:22,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:46:22,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 15:46:22,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-16 15:46:22,332 INFO L87 Difference]: Start difference. First operand 1219 states and 2660 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2021-06-16 15:46:22,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:46:22,418 INFO L93 Difference]: Finished difference Result 1435 states and 3213 transitions. [2021-06-16 15:46:22,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 15:46:22,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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 56 [2021-06-16 15:46:22,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:46:22,422 INFO L225 Difference]: With dead ends: 1435 [2021-06-16 15:46:22,422 INFO L226 Difference]: Without dead ends: 647 [2021-06-16 15:46:22,422 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 92.3ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-06-16 15:46:22,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2021-06-16 15:46:22,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 647. [2021-06-16 15:46:22,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 631 states have (on average 2.2630744849445326) internal successors, (1428), 646 states have internal predecessors, (1428), 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) [2021-06-16 15:46:22,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1428 transitions. [2021-06-16 15:46:22,452 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1428 transitions. Word has length 56 [2021-06-16 15:46:22,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:46:22,452 INFO L482 AbstractCegarLoop]: Abstraction has 647 states and 1428 transitions. [2021-06-16 15:46:22,452 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2021-06-16 15:46:22,453 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1428 transitions. [2021-06-16 15:46:22,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-16 15:46:22,454 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:46:22,454 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:46:22,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-16 15:46:22,454 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:46:22,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:46:22,454 INFO L82 PathProgramCache]: Analyzing trace with hash -964476356, now seen corresponding path program 1 times [2021-06-16 15:46:22,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:46:22,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445575700] [2021-06-16 15:46:22,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:46:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:46:22,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:22,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:46:22,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:22,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:46:22,516 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-16 15:46:22,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-16 15:46:22,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:22,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 15:46:22,535 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-16 15:46:22,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:46:22,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:22,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:46:22,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:46:22,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:46:22,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445575700] [2021-06-16 15:46:22,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445575700] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:46:22,543 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:46:22,543 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-16 15:46:22,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924270763] [2021-06-16 15:46:22,543 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-16 15:46:22,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:46:22,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-16 15:46:22,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-16 15:46:22,544 INFO L87 Difference]: Start difference. First operand 647 states and 1428 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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) [2021-06-16 15:46:22,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:46:22,620 INFO L93 Difference]: Finished difference Result 740 states and 1581 transitions. [2021-06-16 15:46:22,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-16 15:46:22,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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 57 [2021-06-16 15:46:22,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:46:22,622 INFO L225 Difference]: With dead ends: 740 [2021-06-16 15:46:22,622 INFO L226 Difference]: Without dead ends: 612 [2021-06-16 15:46:22,623 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 65.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-16 15:46:22,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-06-16 15:46:22,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2021-06-16 15:46:22,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 597 states have (on average 2.2311557788944723) internal successors, (1332), 611 states have internal predecessors, (1332), 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) [2021-06-16 15:46:22,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 1332 transitions. [2021-06-16 15:46:22,632 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 1332 transitions. Word has length 57 [2021-06-16 15:46:22,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:46:22,632 INFO L482 AbstractCegarLoop]: Abstraction has 612 states and 1332 transitions. [2021-06-16 15:46:22,632 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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) [2021-06-16 15:46:22,632 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 1332 transitions. [2021-06-16 15:46:22,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-16 15:46:22,633 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:46:22,633 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:46:22,633 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-16 15:46:22,633 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:46:22,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:46:22,633 INFO L82 PathProgramCache]: Analyzing trace with hash 17738593, now seen corresponding path program 1 times [2021-06-16 15:46:22,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:46:22,633 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818921306] [2021-06-16 15:46:22,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:46:22,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:46:22,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:22,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:46:22,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:22,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:46:22,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:22,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:46:22,696 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-16 15:46:22,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-16 15:46:22,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:22,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 15:46:22,719 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-16 15:46:22,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:46:22,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:22,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:46:22,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:46:22,726 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:46:22,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818921306] [2021-06-16 15:46:22,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818921306] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:46:22,727 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:46:22,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 15:46:22,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270451833] [2021-06-16 15:46:22,727 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 15:46:22,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:46:22,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 15:46:22,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-16 15:46:22,728 INFO L87 Difference]: Start difference. First operand 612 states and 1332 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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) [2021-06-16 15:46:22,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:46:22,809 INFO L93 Difference]: Finished difference Result 534 states and 1053 transitions. [2021-06-16 15:46:22,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 15:46:22,809 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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 58 [2021-06-16 15:46:22,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:46:22,810 INFO L225 Difference]: With dead ends: 534 [2021-06-16 15:46:22,810 INFO L226 Difference]: Without dead ends: 398 [2021-06-16 15:46:22,811 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 77.5ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-16 15:46:22,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-06-16 15:46:22,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2021-06-16 15:46:22,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 389 states have (on average 2.056555269922879) internal successors, (800), 397 states have internal predecessors, (800), 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) [2021-06-16 15:46:22,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 800 transitions. [2021-06-16 15:46:22,817 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 800 transitions. Word has length 58 [2021-06-16 15:46:22,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:46:22,817 INFO L482 AbstractCegarLoop]: Abstraction has 398 states and 800 transitions. [2021-06-16 15:46:22,817 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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) [2021-06-16 15:46:22,818 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 800 transitions. [2021-06-16 15:46:22,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-16 15:46:22,818 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:46:22,818 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:46:22,818 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-16 15:46:22,818 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:46:22,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:46:22,819 INFO L82 PathProgramCache]: Analyzing trace with hash -2092959876, now seen corresponding path program 1 times [2021-06-16 15:46:22,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:46:22,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225382760] [2021-06-16 15:46:22,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:46:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:46:22,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:22,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:46:22,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:22,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:46:22,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:22,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:46:22,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:22,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:46:22,871 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-16 15:46:22,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-16 15:46:22,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:22,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 15:46:22,890 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-16 15:46:22,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:46:22,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:46:22,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:46:22,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:46:22,899 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:46:22,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225382760] [2021-06-16 15:46:22,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225382760] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:46:22,899 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:46:22,899 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 15:46:22,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615272320] [2021-06-16 15:46:22,900 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 15:46:22,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:46:22,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 15:46:22,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-16 15:46:22,900 INFO L87 Difference]: Start difference. First operand 398 states and 800 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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) [2021-06-16 15:46:22,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:46:22,953 INFO L93 Difference]: Finished difference Result 191 states and 264 transitions. [2021-06-16 15:46:22,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 15:46:22,953 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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 59 [2021-06-16 15:46:22,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:46:22,953 INFO L225 Difference]: With dead ends: 191 [2021-06-16 15:46:22,953 INFO L226 Difference]: Without dead ends: 0 [2021-06-16 15:46:22,954 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 67.6ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-06-16 15:46:22,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-16 15:46:22,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-16 15:46:22,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:46:22,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-16 15:46:22,954 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2021-06-16 15:46:22,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:46:22,954 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-16 15:46:22,954 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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) [2021-06-16 15:46:22,954 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-16 15:46:22,954 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-16 15:46:22,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-16 15:46:22,956 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-16 15:46:22,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.06 03:46:22 BasicIcfg [2021-06-16 15:46:22,958 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-16 15:46:22,960 INFO L168 Benchmark]: Toolchain (without parser) took 4612.13 ms. Allocated memory was 190.8 MB in the beginning and 345.0 MB in the end (delta: 154.1 MB). Free memory was 154.4 MB in the beginning and 167.4 MB in the end (delta: -12.9 MB). Peak memory consumption was 142.4 MB. Max. memory is 8.0 GB. [2021-06-16 15:46:22,962 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 190.8 MB. Free memory was 172.5 MB in the beginning and 172.3 MB in the end (delta: 220.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-16 15:46:22,962 INFO L168 Benchmark]: CACSL2BoogieTranslator took 510.63 ms. Allocated memory is still 190.8 MB. Free memory was 154.2 MB in the beginning and 151.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. [2021-06-16 15:46:22,962 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.98 ms. Allocated memory is still 190.8 MB. Free memory was 151.1 MB in the beginning and 149.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-16 15:46:22,964 INFO L168 Benchmark]: Boogie Preprocessor took 16.33 ms. Allocated memory is still 190.8 MB. Free memory was 149.0 MB in the beginning and 148.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-16 15:46:22,964 INFO L168 Benchmark]: RCFGBuilder took 433.50 ms. Allocated memory is still 190.8 MB. Free memory was 147.4 MB in the beginning and 124.4 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-06-16 15:46:22,964 INFO L168 Benchmark]: TraceAbstraction took 3612.79 ms. Allocated memory was 190.8 MB in the beginning and 345.0 MB in the end (delta: 154.1 MB). Free memory was 123.8 MB in the beginning and 167.4 MB in the end (delta: -43.5 MB). Peak memory consumption was 111.7 MB. Max. memory is 8.0 GB. [2021-06-16 15:46:22,970 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 190.8 MB. Free memory was 172.5 MB in the beginning and 172.3 MB in the end (delta: 220.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 510.63 ms. Allocated memory is still 190.8 MB. Free memory was 154.2 MB in the beginning and 151.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 28.98 ms. Allocated memory is still 190.8 MB. Free memory was 151.1 MB in the beginning and 149.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 16.33 ms. Allocated memory is still 190.8 MB. Free memory was 149.0 MB in the beginning and 148.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 433.50 ms. Allocated memory is still 190.8 MB. Free memory was 147.4 MB in the beginning and 124.4 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3612.79 ms. Allocated memory was 190.8 MB in the beginning and 345.0 MB in the end (delta: 154.1 MB). Free memory was 123.8 MB in the beginning and 167.4 MB in the end (delta: -43.5 MB). Peak memory consumption was 111.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 33617, positive: 32412, positive conditional: 32412, positive unconditional: 0, negative: 1205, negative conditional: 1205, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 33110, positive: 32412, positive conditional: 0, positive unconditional: 32412, negative: 698, negative conditional: 0, negative unconditional: 698, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 907, positive: 893, positive conditional: 0, positive unconditional: 893, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 907, positive: 889, positive conditional: 0, positive unconditional: 889, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 18, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 49, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 33110, positive: 31519, positive conditional: 0, positive unconditional: 31519, negative: 684, negative conditional: 0, negative unconditional: 684, unknown: 907, unknown conditional: 0, unknown unconditional: 907] , Statistics on independence cache: Total cache size (in pairs): 907, Positive cache size: 893, Positive conditional cache size: 0, Positive unconditional cache size: 893, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Independence queries for same thread: 507 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3521.1ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 59.1ms, AutomataDifference: 1310.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 710.3ms, PartialOrderReductionTime: 699.0ms, HoareTripleCheckerStatistics: 758 SDtfs, 1240 SDslu, 2682 SDs, 0 SdLazy, 300 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 194.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 970.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9332occurred in iteration=0, InterpolantAutomatonStates: 90, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 265.8ms AutomataMinimizationTime, 8 MinimizatonAttempts, 1120 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 27.8ms SsaConstructionTime, 200.6ms SatisfiabilityAnalysisTime, 798.1ms InterpolantComputationTime, 437 NumberOfCodeBlocks, 437 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 429 ConstructedInterpolants, 0 QuantifiedInterpolants, 1739 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...