/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/array-examples/sanfoundry_24-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 17:57:41,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:57:41,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:57:41,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 17:57:41,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 17:57:41,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 17:57:41,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 17:57:41,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 17:57:41,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 17:57:41,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 17:57:41,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 17:57:41,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 17:57:41,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:57:41,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:57:41,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:57:41,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:57:41,968 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:57:41,969 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:57:41,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:57:41,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:57:41,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:57:41,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:57:41,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:57:41,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:57:41,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 17:57:42,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:57:42,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:57:42,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:57:42,014 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 [2021-02-19 17:57:42,042 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:57:42,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:57:42,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:57:42,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:57:42,044 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:57:42,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:57:42,045 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:57:42,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:57:42,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:57:42,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:57:42,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:57:42,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:57:42,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:57:42,046 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:57:42,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:57:42,047 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:57:42,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:57:42,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:57:42,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:57:42,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:57:42,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:57:42,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:57:42,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:57:42,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:57:42,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:57:42,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:57:42,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:57:42,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:57:42,049 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:57:42,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:57:42,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:57:42,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:57:42,512 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:57:42,513 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:57:42,514 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sanfoundry_24-1.i [2021-02-19 17:57:42,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ad75155b/b21113defbae42819f326e8f616e6066/FLAGa3ddb5dc6 [2021-02-19 17:57:43,321 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:57:43,321 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sanfoundry_24-1.i [2021-02-19 17:57:43,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ad75155b/b21113defbae42819f326e8f616e6066/FLAGa3ddb5dc6 [2021-02-19 17:57:43,705 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ad75155b/b21113defbae42819f326e8f616e6066 [2021-02-19 17:57:43,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:57:43,723 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:57:43,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:57:43,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:57:43,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:57:43,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:57:43" (1/1) ... [2021-02-19 17:57:43,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aaa6be3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:57:43, skipping insertion in model container [2021-02-19 17:57:43,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:57:43" (1/1) ... [2021-02-19 17:57:43,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:57:43,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:57:43,945 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sanfoundry_24-1.i[848,861] [2021-02-19 17:57:43,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:57:43,970 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:57:43,983 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sanfoundry_24-1.i[848,861] [2021-02-19 17:57:43,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:57:44,010 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:57:44,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:57:44 WrapperNode [2021-02-19 17:57:44,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:57:44,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:57:44,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:57:44,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:57:44,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:57:44" (1/1) ... [2021-02-19 17:57:44,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:57:44" (1/1) ... [2021-02-19 17:57:44,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:57:44" (1/1) ... [2021-02-19 17:57:44,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:57:44" (1/1) ... [2021-02-19 17:57:44,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:57:44" (1/1) ... [2021-02-19 17:57:44,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:57:44" (1/1) ... [2021-02-19 17:57:44,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:57:44" (1/1) ... [2021-02-19 17:57:44,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:57:44,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:57:44,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:57:44,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:57:44,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:57:44" (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 [2021-02-19 17:57:44,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:57:44,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:57:44,155 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:57:44,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-19 17:57:44,156 INFO L138 BoogieDeclarations]: Found implementation of procedure printEven [2021-02-19 17:57:44,156 INFO L138 BoogieDeclarations]: Found implementation of procedure printOdd [2021-02-19 17:57:44,156 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:57:44,157 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:57:44,157 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:57:44,157 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-19 17:57:44,157 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-19 17:57:44,157 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:57:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:57:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-19 17:57:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-19 17:57:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure printEven [2021-02-19 17:57:44,158 INFO L130 BoogieDeclarations]: Found specification of procedure printOdd [2021-02-19 17:57:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:57:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:57:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:57:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:57:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:57:44,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:57:44,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:57:44,580 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:57:44,580 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-19 17:57:44,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:57:44 BoogieIcfgContainer [2021-02-19 17:57:44,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:57:44,591 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:57:44,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:57:44,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:57:44,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:57:43" (1/3) ... [2021-02-19 17:57:44,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682e6b91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:57:44, skipping insertion in model container [2021-02-19 17:57:44,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:57:44" (2/3) ... [2021-02-19 17:57:44,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682e6b91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:57:44, skipping insertion in model container [2021-02-19 17:57:44,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:57:44" (3/3) ... [2021-02-19 17:57:44,608 INFO L111 eAbstractionObserver]: Analyzing ICFG sanfoundry_24-1.i [2021-02-19 17:57:44,624 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:57:44,636 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:57:44,688 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:57:44,735 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:57:44,735 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:57:44,736 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:57:44,736 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:57:44,736 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:57:44,736 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:57:44,736 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:57:44,736 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:57:44,766 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2021-02-19 17:57:44,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-02-19 17:57:44,773 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:57:44,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:57:44,774 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:57:44,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:57:44,784 INFO L82 PathProgramCache]: Analyzing trace with hash 349610285, now seen corresponding path program 1 times [2021-02-19 17:57:44,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:57:44,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803908887] [2021-02-19 17:57:44,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:57:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:57:45,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:45,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:57:45,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:45,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:57:45,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:57:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:57:45,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:45,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:57:45,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:57:45,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803908887] [2021-02-19 17:57:45,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:57:45,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-19 17:57:45,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427137186] [2021-02-19 17:57:45,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-19 17:57:45,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:57:45,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-19 17:57:45,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 17:57:45,124 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2021-02-19 17:57:45,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:57:45,261 INFO L93 Difference]: Finished difference Result 70 states and 90 transitions. [2021-02-19 17:57:45,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 17:57:45,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2021-02-19 17:57:45,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:57:45,272 INFO L225 Difference]: With dead ends: 70 [2021-02-19 17:57:45,272 INFO L226 Difference]: Without dead ends: 34 [2021-02-19 17:57:45,275 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 [2021-02-19 17:57:45,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-02-19 17:57:45,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-02-19 17:57:45,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-02-19 17:57:45,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2021-02-19 17:57:45,322 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 16 [2021-02-19 17:57:45,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:57:45,323 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2021-02-19 17:57:45,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-19 17:57:45,323 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2021-02-19 17:57:45,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-02-19 17:57:45,325 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:57:45,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:57:45,325 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:57:45,325 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:57:45,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:57:45,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1528691315, now seen corresponding path program 1 times [2021-02-19 17:57:45,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:57:45,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195284758] [2021-02-19 17:57:45,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:57:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:57:45,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:45,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:57:45,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:45,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:57:45,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:45,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:57:45,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:45,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:57:45,433 WARN L141 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-02-19 17:57:45,434 WARN L147 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size 1 [2021-02-19 17:57:45,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:45,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:57:45,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:57:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:57:45,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:45,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:57:45,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:57:45,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195284758] [2021-02-19 17:57:45,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:57:45,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-19 17:57:45,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134057317] [2021-02-19 17:57:45,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-19 17:57:45,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:57:45,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-19 17:57:45,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-19 17:57:45,475 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 6 states. [2021-02-19 17:57:45,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:57:45,636 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2021-02-19 17:57:45,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-19 17:57:45,636 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2021-02-19 17:57:45,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:57:45,638 INFO L225 Difference]: With dead ends: 75 [2021-02-19 17:57:45,638 INFO L226 Difference]: Without dead ends: 46 [2021-02-19 17:57:45,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-19 17:57:45,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-02-19 17:57:45,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 36. [2021-02-19 17:57:45,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-02-19 17:57:45,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2021-02-19 17:57:45,653 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 16 [2021-02-19 17:57:45,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:57:45,653 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2021-02-19 17:57:45,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-19 17:57:45,653 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2021-02-19 17:57:45,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-02-19 17:57:45,654 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:57:45,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:57:45,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 17:57:45,655 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:57:45,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:57:45,656 INFO L82 PathProgramCache]: Analyzing trace with hash 280728469, now seen corresponding path program 1 times [2021-02-19 17:57:45,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:57:45,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102041965] [2021-02-19 17:57:45,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:57:45,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:57:45,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:45,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:57:45,773 WARN L141 QuantifierPusher]: treesize reduction 28, result has 55.6 percent of original size [2021-02-19 17:57:45,776 WARN L147 QuantifierPusher]: treesize reduction 28, result has 55.6 percent of original size 35 [2021-02-19 17:57:45,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:45,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:57:45,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:45,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:57:45,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:45,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-19 17:57:45,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:45,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 17:57:45,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:45,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 17:57:45,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:45,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:57:45,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:57:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:57:45,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:45,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:57:45,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 17:57:45,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102041965] [2021-02-19 17:57:45,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:57:45,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-19 17:57:45,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458866334] [2021-02-19 17:57:45,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-19 17:57:45,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:57:45,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-19 17:57:45,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-02-19 17:57:45,939 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 9 states. [2021-02-19 17:57:46,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:57:46,298 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2021-02-19 17:57:46,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-19 17:57:46,299 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2021-02-19 17:57:46,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:57:46,300 INFO L225 Difference]: With dead ends: 42 [2021-02-19 17:57:46,301 INFO L226 Difference]: Without dead ends: 40 [2021-02-19 17:57:46,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-02-19 17:57:46,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-02-19 17:57:46,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-02-19 17:57:46,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-02-19 17:57:46,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2021-02-19 17:57:46,312 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 18 [2021-02-19 17:57:46,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:57:46,312 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2021-02-19 17:57:46,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-19 17:57:46,313 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2021-02-19 17:57:46,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-19 17:57:46,314 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:57:46,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:57:46,314 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-19 17:57:46,314 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:57:46,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:57:46,315 INFO L82 PathProgramCache]: Analyzing trace with hash 119894203, now seen corresponding path program 1 times [2021-02-19 17:57:46,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:57:46,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206233653] [2021-02-19 17:57:46,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:57:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:57:46,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:46,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:57:46,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:46,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-19 17:57:46,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:46,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-19 17:57:46,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:46,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-19 17:57:46,475 WARN L141 QuantifierPusher]: treesize reduction 62, result has 11.4 percent of original size [2021-02-19 17:57:46,475 WARN L147 QuantifierPusher]: treesize reduction 62, result has 11.4 percent of original size 8 [2021-02-19 17:57:46,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:46,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 17:57:46,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:46,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 17:57:46,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:46,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:57:46,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:57:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:57:46,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:46,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:57:46,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 17:57:46,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206233653] [2021-02-19 17:57:46,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:57:46,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-19 17:57:46,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870011099] [2021-02-19 17:57:46,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-19 17:57:46,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:57:46,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-19 17:57:46,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-02-19 17:57:46,549 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 9 states. [2021-02-19 17:57:46,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:57:46,867 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-02-19 17:57:46,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-19 17:57:46,867 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2021-02-19 17:57:46,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:57:46,868 INFO L225 Difference]: With dead ends: 40 [2021-02-19 17:57:46,869 INFO L226 Difference]: Without dead ends: 0 [2021-02-19 17:57:46,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-02-19 17:57:46,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-19 17:57:46,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-19 17:57:46,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-19 17:57:46,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-19 17:57:46,871 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2021-02-19 17:57:46,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:57:46,871 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-19 17:57:46,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-19 17:57:46,872 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-19 17:57:46,872 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-19 17:57:46,873 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-19 17:57:46,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-19 17:57:47,060 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-19 17:57:47,060 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-19 17:57:47,060 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-19 17:57:47,060 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-19 17:57:47,061 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-02-19 17:57:47,061 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-19 17:57:47,061 INFO L192 CegarLoopUtils]: At program point printOddENTRY(lines 18 20) the Hoare annotation is: true [2021-02-19 17:57:47,061 INFO L189 CegarLoopUtils]: For program point printOddFINAL(lines 18 20) no Hoare annotation was computed. [2021-02-19 17:57:47,062 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (or (not (let ((.cse0 (+ |printOdd_#in~i| 1))) (<= .cse0 (* 2 (div .cse0 2))))) (not (= printOdd_~i (* (div printOdd_~i 2) 2)))) [2021-02-19 17:57:47,062 INFO L189 CegarLoopUtils]: For program point printOddEXIT(lines 18 20) no Hoare annotation was computed. [2021-02-19 17:57:47,062 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-19 17:57:47,062 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-19 17:57:47,062 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-19 17:57:47,062 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-19 17:57:47,063 INFO L189 CegarLoopUtils]: For program point L27-2(lines 27 30) no Hoare annotation was computed. [2021-02-19 17:57:47,063 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 21 47) no Hoare annotation was computed. [2021-02-19 17:57:47,063 INFO L192 CegarLoopUtils]: At program point L27-3(lines 27 30) the Hoare annotation is: true [2021-02-19 17:57:47,063 INFO L189 CegarLoopUtils]: For program point L27-4(lines 27 30) no Hoare annotation was computed. [2021-02-19 17:57:47,063 INFO L185 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (<= |main_#t~mem8| (* 2 (div |main_#t~mem8| 2))) [2021-02-19 17:57:47,063 INFO L189 CegarLoopUtils]: For program point L36-1(line 36) no Hoare annotation was computed. [2021-02-19 17:57:47,063 INFO L189 CegarLoopUtils]: For program point L32-2(lines 32 38) no Hoare annotation was computed. [2021-02-19 17:57:47,064 INFO L192 CegarLoopUtils]: At program point L32-3(lines 32 38) the Hoare annotation is: true [2021-02-19 17:57:47,064 INFO L189 CegarLoopUtils]: For program point L32-4(lines 32 38) no Hoare annotation was computed. [2021-02-19 17:57:47,064 INFO L189 CegarLoopUtils]: For program point L41(lines 41 44) no Hoare annotation was computed. [2021-02-19 17:57:47,064 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 21 47) no Hoare annotation was computed. [2021-02-19 17:57:47,064 INFO L189 CegarLoopUtils]: For program point L34(lines 34 37) no Hoare annotation was computed. [2021-02-19 17:57:47,064 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 21 47) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-02-19 17:57:47,065 INFO L185 CegarLoopUtils]: At program point L43(line 43) the Hoare annotation is: (let ((.cse0 (+ |main_#t~mem11| 1))) (<= .cse0 (* 2 (div .cse0 2)))) [2021-02-19 17:57:47,065 INFO L189 CegarLoopUtils]: For program point L43-1(line 43) no Hoare annotation was computed. [2021-02-19 17:57:47,065 INFO L189 CegarLoopUtils]: For program point L39-2(lines 39 45) no Hoare annotation was computed. [2021-02-19 17:57:47,065 INFO L192 CegarLoopUtils]: At program point L39-3(lines 39 45) the Hoare annotation is: true [2021-02-19 17:57:47,065 INFO L189 CegarLoopUtils]: For program point L39-4(lines 39 45) no Hoare annotation was computed. [2021-02-19 17:57:47,065 INFO L185 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: (or (<= printEven_~i (* 2 (div printEven_~i 2))) (not (<= |printEven_#in~i| (* 2 (div |printEven_#in~i| 2))))) [2021-02-19 17:57:47,065 INFO L189 CegarLoopUtils]: For program point printEvenEXIT(lines 15 17) no Hoare annotation was computed. [2021-02-19 17:57:47,066 INFO L192 CegarLoopUtils]: At program point printEvenENTRY(lines 15 17) the Hoare annotation is: true [2021-02-19 17:57:47,066 INFO L189 CegarLoopUtils]: For program point printEvenFINAL(lines 15 17) no Hoare annotation was computed. [2021-02-19 17:57:47,066 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(line 14) the Hoare annotation is: true [2021-02-19 17:57:47,066 INFO L189 CegarLoopUtils]: For program point L14(line 14) no Hoare annotation was computed. [2021-02-19 17:57:47,066 INFO L189 CegarLoopUtils]: For program point L14-1(line 14) no Hoare annotation was computed. [2021-02-19 17:57:47,066 INFO L189 CegarLoopUtils]: For program point L14-3(line 14) no Hoare annotation was computed. [2021-02-19 17:57:47,066 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(line 14) no Hoare annotation was computed. [2021-02-19 17:57:47,067 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-02-19 17:57:47,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:57:47 BoogieIcfgContainer [2021-02-19 17:57:47,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:57:47,079 INFO L168 Benchmark]: Toolchain (without parser) took 3367.94 ms. Allocated memory was 163.6 MB in the beginning and 222.3 MB in the end (delta: 58.7 MB). Free memory was 138.6 MB in the beginning and 83.0 MB in the end (delta: 55.7 MB). Peak memory consumption was 115.7 MB. Max. memory is 8.0 GB. [2021-02-19 17:57:47,080 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 163.6 MB. Free memory is still 137.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:57:47,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.68 ms. Allocated memory is still 163.6 MB. Free memory was 137.5 MB in the beginning and 128.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-19 17:57:47,081 INFO L168 Benchmark]: Boogie Preprocessor took 38.94 ms. Allocated memory is still 163.6 MB. Free memory was 128.0 MB in the beginning and 126.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-19 17:57:47,082 INFO L168 Benchmark]: RCFGBuilder took 534.05 ms. Allocated memory is still 163.6 MB. Free memory was 126.4 MB in the beginning and 143.3 MB in the end (delta: -16.9 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. [2021-02-19 17:57:47,083 INFO L168 Benchmark]: TraceAbstraction took 2486.80 ms. Allocated memory was 163.6 MB in the beginning and 222.3 MB in the end (delta: 58.7 MB). Free memory was 142.8 MB in the beginning and 83.0 MB in the end (delta: 59.8 MB). Peak memory consumption was 119.6 MB. Max. memory is 8.0 GB. [2021-02-19 17:57:47,086 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 163.6 MB. Free memory is still 137.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 284.68 ms. Allocated memory is still 163.6 MB. Free memory was 137.5 MB in the beginning and 128.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.94 ms. Allocated memory is still 163.6 MB. Free memory was 128.0 MB in the beginning and 126.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 534.05 ms. Allocated memory is still 163.6 MB. Free memory was 126.4 MB in the beginning and 143.3 MB in the end (delta: -16.9 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2486.80 ms. Allocated memory was 163.6 MB in the beginning and 222.3 MB in the end (delta: 58.7 MB). Free memory was 142.8 MB in the beginning and 83.0 MB in the end (delta: 59.8 MB). Peak memory consumption was 119.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: 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: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 126 SDtfs, 69 SDslu, 288 SDs, 0 SdLazy, 364 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 10 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 27 PreInvPairs, 35 NumberOfFragments, 95 HoareAnnotationTreeSize, 27 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 206 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 4706 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 3/3 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...