/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/nested5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:29:35,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:29:35,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:29:35,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:29:35,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:29:35,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:29:35,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:29:35,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:29:35,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:29:35,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:29:35,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:29:35,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:29:35,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:29:35,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:29:35,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:29:35,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:29:35,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:29:35,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:29:35,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:29:35,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:29:35,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:29:35,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:29:35,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:29:35,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:29:35,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 16:29:35,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 16:29:35,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 16:29:35,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 16:29:35,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 16:29:35,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 16:29:35,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 16:29:35,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 16:29:35,927 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 16:29:35,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 16:29:35,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 16:29:35,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 16:29:35,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 16:29:35,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 16:29:35,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:29:35,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:29:35,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:29:35,935 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-21 16:29:35,987 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:29:35,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:29:35,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:29:35,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:29:35,993 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:29:35,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:29:35,993 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:29:35,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:29:35,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:29:35,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:29:35,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:29:35,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:29:35,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:29:35,996 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:29:35,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:29:35,996 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:29:35,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:29:35,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:29:35,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:29:35,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:29:35,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:29:35,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:29:35,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:29:35,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:29:35,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:29:35,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:29:35,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:29:35,999 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:29:35,999 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:29:36,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:29:36,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:29:36,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:29:36,449 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:29:36,449 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:29:36,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested5-1.c [2021-02-21 16:29:36,534 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6417b08d/5f44446fc8a64f0a99531d71fa9c2823/FLAG054ff46bc [2021-02-21 16:29:37,249 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:29:37,250 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested5-1.c [2021-02-21 16:29:37,257 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6417b08d/5f44446fc8a64f0a99531d71fa9c2823/FLAG054ff46bc [2021-02-21 16:29:37,610 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6417b08d/5f44446fc8a64f0a99531d71fa9c2823 [2021-02-21 16:29:37,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:29:37,627 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:29:37,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:29:37,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:29:37,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:29:37,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:29:37" (1/1) ... [2021-02-21 16:29:37,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cadaf08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:29:37, skipping insertion in model container [2021-02-21 16:29:37,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:29:37" (1/1) ... [2021-02-21 16:29:37,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:29:37,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:29:37,799 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested5-1.c[321,334] [2021-02-21 16:29:37,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:29:37,831 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:29:37,844 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested5-1.c[321,334] [2021-02-21 16:29:37,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:29:37,866 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:29:37,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:29:37 WrapperNode [2021-02-21 16:29:37,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:29:37,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:29:37,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:29:37,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:29:37,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:29:37" (1/1) ... [2021-02-21 16:29:37,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:29:37" (1/1) ... [2021-02-21 16:29:37,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:29:37" (1/1) ... [2021-02-21 16:29:37,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:29:37" (1/1) ... [2021-02-21 16:29:37,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:29:37" (1/1) ... [2021-02-21 16:29:37,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:29:37" (1/1) ... [2021-02-21 16:29:37,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:29:37" (1/1) ... [2021-02-21 16:29:37,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:29:37,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:29:37,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:29:37,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:29:37,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:29:37" (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 [2021-02-21 16:29:38,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:29:38,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:29:38,010 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:29:38,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 16:29:38,010 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:29:38,010 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:29:38,011 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:29:38,011 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:29:38,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:29:38,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 16:29:38,011 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:29:38,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:29:38,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:29:38,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:29:38,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:29:38,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:29:38,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:29:38,362 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:29:38,363 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 16:29:38,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:29:38 BoogieIcfgContainer [2021-02-21 16:29:38,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:29:38,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:29:38,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:29:38,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:29:38,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:29:37" (1/3) ... [2021-02-21 16:29:38,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18dec08c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:29:38, skipping insertion in model container [2021-02-21 16:29:38,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:29:37" (2/3) ... [2021-02-21 16:29:38,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18dec08c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:29:38, skipping insertion in model container [2021-02-21 16:29:38,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:29:38" (3/3) ... [2021-02-21 16:29:38,402 INFO L111 eAbstractionObserver]: Analyzing ICFG nested5-1.c [2021-02-21 16:29:38,410 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:29:38,415 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:29:38,436 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:29:38,469 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:29:38,469 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:29:38,469 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:29:38,469 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:29:38,469 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:29:38,470 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:29:38,473 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:29:38,473 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:29:38,492 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2021-02-21 16:29:38,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-02-21 16:29:38,498 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:29:38,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:29:38,500 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:29:38,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:29:38,506 INFO L82 PathProgramCache]: Analyzing trace with hash -531959740, now seen corresponding path program 1 times [2021-02-21 16:29:38,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:29:38,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88529545] [2021-02-21 16:29:38,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:29:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:29:38,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:38,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:38,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:38,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:38,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:29:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:29:38,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:38,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:38,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:29:38,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88529545] [2021-02-21 16:29:38,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:29:38,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 16:29:38,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155254416] [2021-02-21 16:29:38,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 16:29:38,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:29:38,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 16:29:38,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:29:38,818 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2021-02-21 16:29:38,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:29:38,897 INFO L93 Difference]: Finished difference Result 50 states and 71 transitions. [2021-02-21 16:29:38,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 16:29:38,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2021-02-21 16:29:38,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:29:38,907 INFO L225 Difference]: With dead ends: 50 [2021-02-21 16:29:38,908 INFO L226 Difference]: Without dead ends: 23 [2021-02-21 16:29:38,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:29:38,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-02-21 16:29:38,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-02-21 16:29:38,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-02-21 16:29:38,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-02-21 16:29:38,957 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 15 [2021-02-21 16:29:38,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:29:38,958 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-02-21 16:29:38,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 16:29:38,958 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-02-21 16:29:38,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-02-21 16:29:38,959 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:29:38,959 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:29:38,960 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:29:38,960 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:29:38,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:29:38,961 INFO L82 PathProgramCache]: Analyzing trace with hash -537500866, now seen corresponding path program 1 times [2021-02-21 16:29:38,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:29:38,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973214746] [2021-02-21 16:29:38,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:29:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:29:39,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:29:39,052 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-02-21 16:29:39,054 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size 38 [2021-02-21 16:29:39,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:29:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:29:39,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:29:39,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973214746] [2021-02-21 16:29:39,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:29:39,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:29:39,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13222520] [2021-02-21 16:29:39,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:29:39,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:29:39,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:29:39,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:29:39,128 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 4 states. [2021-02-21 16:29:39,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:29:39,287 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2021-02-21 16:29:39,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:29:39,288 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2021-02-21 16:29:39,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:29:39,289 INFO L225 Difference]: With dead ends: 49 [2021-02-21 16:29:39,289 INFO L226 Difference]: Without dead ends: 32 [2021-02-21 16:29:39,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:29:39,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-02-21 16:29:39,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 24. [2021-02-21 16:29:39,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-02-21 16:29:39,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-02-21 16:29:39,302 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 15 [2021-02-21 16:29:39,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:29:39,303 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-02-21 16:29:39,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:29:39,304 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-02-21 16:29:39,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-02-21 16:29:39,304 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:29:39,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:29:39,305 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:29:39,305 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:29:39,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:29:39,306 INFO L82 PathProgramCache]: Analyzing trace with hash -509289700, now seen corresponding path program 1 times [2021-02-21 16:29:39,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:29:39,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940594890] [2021-02-21 16:29:39,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:29:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:29:39,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:29:39,374 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-21 16:29:39,376 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-21 16:29:39,414 WARN L141 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size [2021-02-21 16:29:39,415 WARN L147 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size 1 [2021-02-21 16:29:39,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:29:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:29:39,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:29:39,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940594890] [2021-02-21 16:29:39,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057434515] [2021-02-21 16:29:39,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-21 16:29:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:29:39,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2021-02-21 16:29:39,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-21 16:29:39,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:29:39,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:29:39,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:29:39,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:29:39,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:29:39,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:29:39,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:29:39,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:29:39,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:29:39,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:29:39,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:29:39,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:29:39,726 WARN L141 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-02-21 16:29:39,727 WARN L147 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size 9 [2021-02-21 16:29:39,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:29:39,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:39,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:39,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:29:39,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-21 16:29:39,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-02-21 16:29:39,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880192336] [2021-02-21 16:29:39,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 16:29:39,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:29:39,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 16:29:39,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:29:39,774 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 6 states. [2021-02-21 16:29:39,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:29:39,956 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2021-02-21 16:29:39,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 16:29:39,956 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2021-02-21 16:29:39,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:29:39,958 INFO L225 Difference]: With dead ends: 52 [2021-02-21 16:29:39,958 INFO L226 Difference]: Without dead ends: 34 [2021-02-21 16:29:39,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-02-21 16:29:39,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-02-21 16:29:39,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 26. [2021-02-21 16:29:39,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-02-21 16:29:39,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-02-21 16:29:39,968 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 17 [2021-02-21 16:29:39,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:29:39,968 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-02-21 16:29:39,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 16:29:39,968 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-02-21 16:29:39,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-02-21 16:29:39,969 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:29:39,969 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:29:40,184 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-02-21 16:29:40,185 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:29:40,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:29:40,187 INFO L82 PathProgramCache]: Analyzing trace with hash 831837050, now seen corresponding path program 2 times [2021-02-21 16:29:40,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:29:40,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497891072] [2021-02-21 16:29:40,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:29:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:29:40,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:29:40,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:29:40,248 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-21 16:29:40,249 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-21 16:29:40,273 WARN L141 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size [2021-02-21 16:29:40,276 WARN L147 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size 1 [2021-02-21 16:29:40,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:29:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:29:40,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:29:40,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497891072] [2021-02-21 16:29:40,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719089890] [2021-02-21 16:29:40,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-21 16:29:40,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-21 16:29:40,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-21 16:29:40,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2021-02-21 16:29:40,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-21 16:29:40,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:29:40,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:29:40,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:29:40,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:29:40,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:29:40,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:29:40,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:29:40,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:29:40,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:29:40,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:29:40,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:29:40,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:29:40,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:29:40,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:29:40,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:29:40,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:29:40,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 16:29:40,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:29:40,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:29:40,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:29:40,524 WARN L141 QuantifierPusher]: treesize reduction 1, result has 92.3 percent of original size [2021-02-21 16:29:40,526 WARN L147 QuantifierPusher]: treesize reduction 1, result has 92.3 percent of original size 12 [2021-02-21 16:29:40,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:29:40,551 WARN L141 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size [2021-02-21 16:29:40,552 WARN L147 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-02-21 16:29:40,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 16:29:40,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 16:29:40,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:40,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:40,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:29:40,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-21 16:29:40,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-02-21 16:29:40,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708831198] [2021-02-21 16:29:40,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 16:29:40,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:29:40,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 16:29:40,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-21 16:29:40,585 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 7 states. [2021-02-21 16:29:40,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:29:40,819 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2021-02-21 16:29:40,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 16:29:40,820 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2021-02-21 16:29:40,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:29:40,821 INFO L225 Difference]: With dead ends: 56 [2021-02-21 16:29:40,821 INFO L226 Difference]: Without dead ends: 36 [2021-02-21 16:29:40,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-02-21 16:29:40,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-02-21 16:29:40,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2021-02-21 16:29:40,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-02-21 16:29:40,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-02-21 16:29:40,830 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 19 [2021-02-21 16:29:40,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:29:40,831 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-02-21 16:29:40,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 16:29:40,831 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-02-21 16:29:40,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-02-21 16:29:40,832 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:29:40,832 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:29:41,046 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-21 16:29:41,047 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:29:41,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:29:41,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1164455000, now seen corresponding path program 3 times [2021-02-21 16:29:41,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:29:41,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857092418] [2021-02-21 16:29:41,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:29:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:29:41,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:29:41,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:29:41,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:29:41,123 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-21 16:29:41,125 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-21 16:29:41,149 WARN L141 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size [2021-02-21 16:29:41,150 WARN L147 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size 1 [2021-02-21 16:29:41,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:29:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:29:41,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,213 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:29:41,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857092418] [2021-02-21 16:29:41,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881085681] [2021-02-21 16:29:41,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-21 16:29:41,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-02-21 16:29:41,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-21 16:29:41,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjunts are in the unsatisfiable core [2021-02-21 16:29:41,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-21 16:29:41,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:29:41,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:29:41,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:29:41,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:29:41,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 16:29:41,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:29:41,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:29:41,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:29:41,383 WARN L141 QuantifierPusher]: treesize reduction 1, result has 92.9 percent of original size [2021-02-21 16:29:41,384 WARN L147 QuantifierPusher]: treesize reduction 1, result has 92.9 percent of original size 13 [2021-02-21 16:29:41,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 16:29:41,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 16:29:41,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 16:29:41,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:29:41,439 WARN L141 QuantifierPusher]: treesize reduction 22, result has 67.2 percent of original size [2021-02-21 16:29:41,440 WARN L147 QuantifierPusher]: treesize reduction 22, result has 67.2 percent of original size 45 [2021-02-21 16:29:41,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 16:29:41,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:29:41,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-21 16:29:41,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-02-21 16:29:41,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-02-21 16:29:41,458 WARN L141 QuantifierPusher]: treesize reduction -2, result has 102.5 percent of original size [2021-02-21 16:29:41,459 WARN L147 QuantifierPusher]: treesize reduction -2, result has 102.5 percent of original size 82 [2021-02-21 16:29:41,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-02-21 16:29:41,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-02-21 16:29:41,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-02-21 16:29:41,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-02-21 16:29:41,851 WARN L141 QuantifierPusher]: treesize reduction 6, result has 88.2 percent of original size [2021-02-21 16:29:41,852 WARN L147 QuantifierPusher]: treesize reduction 6, result has 88.2 percent of original size 45 [2021-02-21 16:29:41,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-02-21 16:29:41,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:29:41,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:29:41,858 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-21 16:29:41,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-02-21 16:29:41,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-02-21 16:29:41,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588601571] [2021-02-21 16:29:41,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 16:29:41,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:29:41,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 16:29:41,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-02-21 16:29:41,861 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2021-02-21 16:29:42,847 WARN L202 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-02-21 16:29:42,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:29:42,998 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2021-02-21 16:29:42,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-21 16:29:42,999 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2021-02-21 16:29:42,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:29:43,000 INFO L225 Difference]: With dead ends: 35 [2021-02-21 16:29:43,000 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 16:29:43,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-02-21 16:29:43,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 16:29:43,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 16:29:43,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 16:29:43,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 16:29:43,001 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-02-21 16:29:43,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:29:43,002 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 16:29:43,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 16:29:43,002 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 16:29:43,002 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 16:29:43,203 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-21 16:29:43,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 16:29:43,797 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-21 16:29:43,797 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-21 16:29:43,797 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-21 16:29:43,797 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-21 16:29:43,797 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-21 16:29:43,797 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-21 16:29:43,798 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-21 16:29:43,798 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 16:29:43,798 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 16:29:43,798 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-21 16:29:43,798 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 12 27) no Hoare annotation was computed. [2021-02-21 16:29:43,798 INFO L189 CegarLoopUtils]: For program point L23-2(line 23) no Hoare annotation was computed. [2021-02-21 16:29:43,798 INFO L185 CegarLoopUtils]: At program point L23-3(line 23) the Hoare annotation is: (or (= main_~v~0 0) (< (mod (+ main_~v~0 4294967295) 4294967296) 10)) [2021-02-21 16:29:43,798 INFO L185 CegarLoopUtils]: At program point L23-4(line 23) the Hoare annotation is: (and (< (mod (+ main_~v~0 4294967295) 4294967296) 10) (<= 10 (mod main_~v~0 4294967296))) [2021-02-21 16:29:43,798 INFO L189 CegarLoopUtils]: For program point L19-2(lines 19 25) no Hoare annotation was computed. [2021-02-21 16:29:43,798 INFO L185 CegarLoopUtils]: At program point L19-3(lines 19 25) the Hoare annotation is: (or (< (mod (+ main_~v~0 4294967295) 4294967296) 10) (< (mod main_~v~0 4294967296) 10)) [2021-02-21 16:29:43,798 INFO L189 CegarLoopUtils]: For program point L19-4(lines 19 25) no Hoare annotation was computed. [2021-02-21 16:29:43,799 INFO L189 CegarLoopUtils]: For program point L24(lines 22 25) no Hoare annotation was computed. [2021-02-21 16:29:43,799 INFO L189 CegarLoopUtils]: For program point L20-2(lines 20 25) no Hoare annotation was computed. [2021-02-21 16:29:43,799 INFO L185 CegarLoopUtils]: At program point L20-3(lines 20 25) the Hoare annotation is: (or (< (mod (+ main_~v~0 4294967295) 4294967296) 10) (< (mod main_~v~0 4294967296) 10)) [2021-02-21 16:29:43,799 INFO L189 CegarLoopUtils]: For program point L21-2(lines 21 25) no Hoare annotation was computed. [2021-02-21 16:29:43,799 INFO L185 CegarLoopUtils]: At program point L21-3(lines 21 25) the Hoare annotation is: (or (< (mod (+ main_~v~0 4294967295) 4294967296) 10) (< (mod main_~v~0 4294967296) 10)) [2021-02-21 16:29:43,799 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 12 27) no Hoare annotation was computed. [2021-02-21 16:29:43,799 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 12 27) the Hoare annotation is: true [2021-02-21 16:29:43,800 INFO L185 CegarLoopUtils]: At program point L22-2(lines 22 25) the Hoare annotation is: (or (< (mod (+ main_~v~0 4294967295) 4294967296) 10) (< (mod main_~v~0 4294967296) 10)) [2021-02-21 16:29:43,800 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-02-21 16:29:43,800 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2021-02-21 16:29:43,800 INFO L189 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed. [2021-02-21 16:29:43,800 INFO L189 CegarLoopUtils]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-02-21 16:29:43,800 INFO L189 CegarLoopUtils]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2021-02-21 16:29:43,800 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-02-21 16:29:43,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:29:43 BoogieIcfgContainer [2021-02-21 16:29:43,818 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:29:43,819 INFO L168 Benchmark]: Toolchain (without parser) took 6203.66 ms. Allocated memory was 155.2 MB in the beginning and 210.8 MB in the end (delta: 55.6 MB). Free memory was 130.9 MB in the beginning and 184.2 MB in the end (delta: -53.4 MB). Peak memory consumption was 114.8 MB. Max. memory is 8.0 GB. [2021-02-21 16:29:43,819 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory is still 127.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:29:43,819 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.90 ms. Allocated memory is still 155.2 MB. Free memory was 129.7 MB in the beginning and 120.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:29:43,819 INFO L168 Benchmark]: Boogie Preprocessor took 37.51 ms. Allocated memory is still 155.2 MB. Free memory was 120.2 MB in the beginning and 118.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:29:43,820 INFO L168 Benchmark]: RCFGBuilder took 458.44 ms. Allocated memory is still 155.2 MB. Free memory was 118.7 MB in the beginning and 103.6 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-21 16:29:43,820 INFO L168 Benchmark]: TraceAbstraction took 5424.23 ms. Allocated memory was 155.2 MB in the beginning and 210.8 MB in the end (delta: 55.6 MB). Free memory was 138.2 MB in the beginning and 184.2 MB in the end (delta: -46.0 MB). Peak memory consumption was 120.8 MB. Max. memory is 8.0 GB. [2021-02-21 16:29:43,821 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory is still 127.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 238.90 ms. Allocated memory is still 155.2 MB. Free memory was 129.7 MB in the beginning and 120.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.51 ms. Allocated memory is still 155.2 MB. Free memory was 120.2 MB in the beginning and 118.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 458.44 ms. Allocated memory is still 155.2 MB. Free memory was 118.7 MB in the beginning and 103.6 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5424.23 ms. Allocated memory was 155.2 MB in the beginning and 210.8 MB in the end (delta: 55.6 MB). Free memory was 138.2 MB in the beginning and 184.2 MB in the end (delta: -46.0 MB). Peak memory consumption was 120.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (v + 4294967295) % 4294967296 < 10 || v % 4294967296 < 10 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (v + 4294967295) % 4294967296 < 10 || v % 4294967296 < 10 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: v == 0 || (v + 4294967295) % 4294967296 < 10 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (v + 4294967295) % 4294967296 < 10 || v % 4294967296 < 10 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (v + 4294967295) % 4294967296 < 10 || v % 4294967296 < 10 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 128 SDtfs, 189 SDslu, 132 SDs, 0 SdLazy, 224 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 15 PreInvPairs, 28 NumberOfFragments, 111 HoareAnnotationTreeSize, 15 FomulaSimplifications, 3547 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 11 FomulaSimplificationsInter, 523 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 144 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 9104 SizeOfPredicates, 4 NumberOfNonLiveVariables, 330 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 9/28 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...