/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/recursive-simple/id_b5_o10-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:30:15,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:30:15,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:30:15,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 13:30:15,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 13:30:15,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 13:30:15,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 13:30:15,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 13:30:15,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 13:30:15,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 13:30:15,785 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 13:30:15,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 13:30:15,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:30:15,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:30:15,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:30:15,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:30:15,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:30:15,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:30:15,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:30:15,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:30:15,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:30:15,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:30:15,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:30:15,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:30:15,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:30:15,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:30:15,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:30:15,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:30:15,866 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 [2021-02-23 13:30:15,924 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:30:15,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:30:15,926 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:30:15,926 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:30:15,926 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:30:15,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:30:15,927 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:30:15,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:30:15,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:30:15,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:30:15,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:30:15,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:30:15,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:30:15,931 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:30:15,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:30:15,931 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:30:15,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:30:15,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:30:15,932 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:30:15,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:30:15,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:30:15,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:30:15,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:30:15,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:30:15,933 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:30:15,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:30:15,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:30:15,934 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:30:15,934 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:30:16,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:30:16,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:30:16,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:30:16,395 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:30:16,398 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:30:16,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c [2021-02-23 13:30:16,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1169f62c0/7cadde674cb14e17b799a77bff1521b8/FLAGf9ffaea66 [2021-02-23 13:30:17,171 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:30:17,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c [2021-02-23 13:30:17,178 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1169f62c0/7cadde674cb14e17b799a77bff1521b8/FLAGf9ffaea66 [2021-02-23 13:30:17,557 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1169f62c0/7cadde674cb14e17b799a77bff1521b8 [2021-02-23 13:30:17,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:30:17,574 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:30:17,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:30:17,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:30:17,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:30:17,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:30:17" (1/1) ... [2021-02-23 13:30:17,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75c56ba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:30:17, skipping insertion in model container [2021-02-23 13:30:17,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:30:17" (1/1) ... [2021-02-23 13:30:17,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:30:17,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:30:17,760 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c[530,543] [2021-02-23 13:30:17,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:30:17,775 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:30:17,791 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c[530,543] [2021-02-23 13:30:17,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:30:17,808 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:30:17,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:30:17 WrapperNode [2021-02-23 13:30:17,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:30:17,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:30:17,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:30:17,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:30:17,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:30:17" (1/1) ... [2021-02-23 13:30:17,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:30:17" (1/1) ... [2021-02-23 13:30:17,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:30:17" (1/1) ... [2021-02-23 13:30:17,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:30:17" (1/1) ... [2021-02-23 13:30:17,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:30:17" (1/1) ... [2021-02-23 13:30:17,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:30:17" (1/1) ... [2021-02-23 13:30:17,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:30:17" (1/1) ... [2021-02-23 13:30:17,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:30:17,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:30:17,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:30:17,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:30:17,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:30:17" (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 [2021-02-23 13:30:17,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:30:17,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:30:17,959 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:30:17,959 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-02-23 13:30:17,959 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:30:17,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:30:17,959 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:30:17,960 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:30:17,960 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:30:17,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:30:17,960 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-02-23 13:30:17,960 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:30:17,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:30:17,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:30:17,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:30:17,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:30:17,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:30:17,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:30:18,267 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:30:18,270 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 13:30:18,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:30:18 BoogieIcfgContainer [2021-02-23 13:30:18,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:30:18,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:30:18,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:30:18,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:30:18,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:30:17" (1/3) ... [2021-02-23 13:30:18,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7419aed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:30:18, skipping insertion in model container [2021-02-23 13:30:18,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:30:17" (2/3) ... [2021-02-23 13:30:18,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7419aed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:30:18, skipping insertion in model container [2021-02-23 13:30:18,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:30:18" (3/3) ... [2021-02-23 13:30:18,296 INFO L111 eAbstractionObserver]: Analyzing ICFG id_b5_o10-2.c [2021-02-23 13:30:18,320 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:30:18,329 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:30:18,372 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:30:18,400 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:30:18,401 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:30:18,401 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:30:18,401 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:30:18,401 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:30:18,401 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:30:18,401 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:30:18,402 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:30:18,420 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2021-02-23 13:30:18,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-02-23 13:30:18,431 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:30:18,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:30:18,432 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:30:18,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:30:18,443 INFO L82 PathProgramCache]: Analyzing trace with hash -211895392, now seen corresponding path program 1 times [2021-02-23 13:30:18,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:30:18,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477184560] [2021-02-23 13:30:18,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:30:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:30:18,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:18,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:18,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:18,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:18,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:18,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:18,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:18,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:18,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:30:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:30:18,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:18,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:18,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:30:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:30:18,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:18,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:18,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:18,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:18,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:30:18,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477184560] [2021-02-23 13:30:18,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:30:18,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 13:30:18,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721017200] [2021-02-23 13:30:18,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 13:30:18,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:30:18,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 13:30:18,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:30:18,818 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 6 states. [2021-02-23 13:30:19,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:30:19,099 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-02-23 13:30:19,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 13:30:19,101 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-02-23 13:30:19,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:30:19,120 INFO L225 Difference]: With dead ends: 34 [2021-02-23 13:30:19,121 INFO L226 Difference]: Without dead ends: 20 [2021-02-23 13:30:19,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-23 13:30:19,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-02-23 13:30:19,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-02-23 13:30:19,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-02-23 13:30:19,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-02-23 13:30:19,177 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 14 [2021-02-23 13:30:19,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:30:19,177 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-02-23 13:30:19,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 13:30:19,178 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-02-23 13:30:19,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-02-23 13:30:19,180 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:30:19,180 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:30:19,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:30:19,181 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:30:19,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:30:19,182 INFO L82 PathProgramCache]: Analyzing trace with hash -351670379, now seen corresponding path program 1 times [2021-02-23 13:30:19,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:30:19,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401002070] [2021-02-23 13:30:19,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:30:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:30:19,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:30:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:30:19,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:30:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:30:19,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:19,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:19,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 13:30:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:30:19,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-23 13:30:19,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401002070] [2021-02-23 13:30:19,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:30:19,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 13:30:19,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119219924] [2021-02-23 13:30:19,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 13:30:19,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:30:19,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 13:30:19,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:30:19,420 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 6 states. [2021-02-23 13:30:19,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:30:19,608 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2021-02-23 13:30:19,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 13:30:19,608 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2021-02-23 13:30:19,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:30:19,610 INFO L225 Difference]: With dead ends: 32 [2021-02-23 13:30:19,610 INFO L226 Difference]: Without dead ends: 24 [2021-02-23 13:30:19,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-23 13:30:19,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-02-23 13:30:19,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-02-23 13:30:19,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-02-23 13:30:19,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-02-23 13:30:19,620 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 21 [2021-02-23 13:30:19,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:30:19,621 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-02-23 13:30:19,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 13:30:19,621 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-02-23 13:30:19,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-02-23 13:30:19,622 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:30:19,622 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:30:19,622 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:30:19,623 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:30:19,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:30:19,624 INFO L82 PathProgramCache]: Analyzing trace with hash -323041228, now seen corresponding path program 1 times [2021-02-23 13:30:19,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:30:19,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721858746] [2021-02-23 13:30:19,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:30:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:30:19,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:19,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:19,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:30:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:30:19,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:30:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:30:19,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:19,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:19,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:19,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 13:30:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:30:19,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:19,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-23 13:30:19,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721858746] [2021-02-23 13:30:19,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957573659] [2021-02-23 13:30:19,826 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 [2021-02-23 13:30:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:30:19,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2021-02-23 13:30:19,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-23 13:30:19,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:19,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:19,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:19,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:19,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:19,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:19,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:19,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:19,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:19,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:19,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:30:20,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:30:20,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 13:30:20,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:30:20,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:30:20,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 13:30:20,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 13:30:20,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:20,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:30:20,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 13:30:20,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:30:20,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:30:20,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 13:30:20,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:30:20,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 13:30:20,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:20,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:30:20,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:30:20,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:30:20,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 13:30:20,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 13:30:20,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:20,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:20,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:20,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:20,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:20,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:30:20,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:30:20,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 13:30:20,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:30:20,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:30:20,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 13:30:20,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 13:30:20,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:20,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:30:20,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:30:20,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 13:30:20,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 13:30:20,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:30:20,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 13:30:20,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 13:30:20,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:20,146 WARN L141 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-02-23 13:30:20,152 WARN L147 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size 1 [2021-02-23 13:30:20,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:20,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:20,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:20,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-23 13:30:20,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-23 13:30:20,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2021-02-23 13:30:20,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745256586] [2021-02-23 13:30:20,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 13:30:20,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:30:20,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 13:30:20,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-02-23 13:30:20,165 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 10 states. [2021-02-23 13:30:20,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:30:20,547 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2021-02-23 13:30:20,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 13:30:20,548 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2021-02-23 13:30:20,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:30:20,551 INFO L225 Difference]: With dead ends: 28 [2021-02-23 13:30:20,551 INFO L226 Difference]: Without dead ends: 24 [2021-02-23 13:30:20,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-02-23 13:30:20,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-02-23 13:30:20,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-02-23 13:30:20,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-02-23 13:30:20,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-02-23 13:30:20,571 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 21 [2021-02-23 13:30:20,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:30:20,572 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-02-23 13:30:20,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 13:30:20,572 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-02-23 13:30:20,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-23 13:30:20,574 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:30:20,575 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:30:20,790 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-02-23 13:30:20,791 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:30:20,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:30:20,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1614351959, now seen corresponding path program 1 times [2021-02-23 13:30:20,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:30:20,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217908023] [2021-02-23 13:30:20,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:30:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:30:20,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:20,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:20,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:20,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:20,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:30:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:30:20,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:20,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:30:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:30:20,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:20,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:30:20,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 13:30:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:30:20,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:20,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 13:30:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:30:20,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:30:20,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:30:20,935 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-23 13:30:20,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217908023] [2021-02-23 13:30:20,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:30:20,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 13:30:20,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313845581] [2021-02-23 13:30:20,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 13:30:20,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:30:20,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 13:30:20,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:30:20,938 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 6 states. [2021-02-23 13:30:21,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:30:21,066 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-02-23 13:30:21,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 13:30:21,067 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2021-02-23 13:30:21,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:30:21,068 INFO L225 Difference]: With dead ends: 24 [2021-02-23 13:30:21,069 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 13:30:21,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-23 13:30:21,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 13:30:21,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 13:30:21,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 13:30:21,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 13:30:21,077 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-02-23 13:30:21,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:30:21,077 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 13:30:21,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 13:30:21,077 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 13:30:21,077 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 13:30:21,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 13:30:21,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 13:30:21,185 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-02-23 13:30:21,185 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-02-23 13:30:21,185 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-02-23 13:30:21,186 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-23 13:30:21,187 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|)) [2021-02-23 13:30:21,187 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-23 13:30:21,187 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-23 13:30:21,187 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 13:30:21,188 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 13:30:21,188 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-23 13:30:21,190 INFO L189 CegarLoopUtils]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-02-23 13:30:21,190 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 13 19) the Hoare annotation is: true [2021-02-23 13:30:21,190 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 13 19) no Hoare annotation was computed. [2021-02-23 13:30:21,190 INFO L189 CegarLoopUtils]: For program point L17(line 17) no Hoare annotation was computed. [2021-02-23 13:30:21,191 INFO L189 CegarLoopUtils]: For program point L16(lines 16 18) no Hoare annotation was computed. [2021-02-23 13:30:21,191 INFO L192 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: true [2021-02-23 13:30:21,191 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-02-23 13:30:21,191 INFO L189 CegarLoopUtils]: For program point L16-2(lines 13 19) no Hoare annotation was computed. [2021-02-23 13:30:21,192 INFO L189 CegarLoopUtils]: For program point idFINAL(lines 6 11) no Hoare annotation was computed. [2021-02-23 13:30:21,192 INFO L189 CegarLoopUtils]: For program point idEXIT(lines 6 11) no Hoare annotation was computed. [2021-02-23 13:30:21,192 INFO L189 CegarLoopUtils]: For program point L9(line 9) no Hoare annotation was computed. [2021-02-23 13:30:21,192 INFO L192 CegarLoopUtils]: At program point L8(line 8) the Hoare annotation is: true [2021-02-23 13:30:21,192 INFO L192 CegarLoopUtils]: At program point idENTRY(lines 6 11) the Hoare annotation is: true [2021-02-23 13:30:21,192 INFO L189 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed. [2021-02-23 13:30:21,192 INFO L189 CegarLoopUtils]: For program point L8-1(line 8) no Hoare annotation was computed. [2021-02-23 13:30:21,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:30:21 BoogieIcfgContainer [2021-02-23 13:30:21,203 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:30:21,214 INFO L168 Benchmark]: Toolchain (without parser) took 3642.51 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.2 MB in the beginning and 95.5 MB in the end (delta: 30.7 MB). Peak memory consumption was 61.9 MB. Max. memory is 8.0 GB. [2021-02-23 13:30:21,215 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 151.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:30:21,216 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.31 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 116.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:30:21,221 INFO L168 Benchmark]: Boogie Preprocessor took 34.30 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:30:21,222 INFO L168 Benchmark]: RCFGBuilder took 427.41 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 101.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-23 13:30:21,223 INFO L168 Benchmark]: TraceAbstraction took 2925.55 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 101.3 MB in the beginning and 95.5 MB in the end (delta: 5.8 MB). Peak memory consumption was 36.7 MB. Max. memory is 8.0 GB. [2021-02-23 13:30:21,229 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 151.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 233.31 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 116.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.30 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 427.41 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 101.6 MB in the end (delta: 12.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2925.55 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 101.3 MB in the beginning and 95.5 MB in the end (delta: 5.8 MB). Peak memory consumption was 36.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 64 SDtfs, 58 SDslu, 105 SDs, 0 SdLazy, 238 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=3, 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 37 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 120 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 5618 SizeOfPredicates, 1 NumberOfNonLiveVariables, 114 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 23/27 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...