/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-36cd7be [2021-02-23 13:51:14,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:51:14,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:51:14,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 13:51:14,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:51:14,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:51:14,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:51:14,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:51:14,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:51:14,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:51:14,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:51:14,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:51:14,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:51:14,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:51:14,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:51:14,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:51:14,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:51:14,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:51:14,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:51:14,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:51:14,230 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 13:51:14,279 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:51:14,279 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:51:14,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:51:14,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:51:14,284 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:51:14,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:51:14,284 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:51:14,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:51:14,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:51:14,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:51:14,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:51:14,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:51:14,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:51:14,287 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:51:14,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:51:14,287 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:51:14,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:51:14,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:51:14,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:51:14,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:51:14,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:51:14,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:51:14,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:51:14,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:51:14,289 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:51:14,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:51:14,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:51:14,290 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:51:14,290 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:51:14,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:51:14,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:51:14,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:51:14,733 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:51:14,734 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:51:14,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sanfoundry_24-1.i [2021-02-23 13:51:14,832 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1413746f8/b8d8cfd8474a41a1ad2dcd5909d7dc9e/FLAGe21da463a [2021-02-23 13:51:15,522 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:51:15,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sanfoundry_24-1.i [2021-02-23 13:51:15,531 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1413746f8/b8d8cfd8474a41a1ad2dcd5909d7dc9e/FLAGe21da463a [2021-02-23 13:51:15,861 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1413746f8/b8d8cfd8474a41a1ad2dcd5909d7dc9e [2021-02-23 13:51:15,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:51:15,880 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:51:15,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:51:15,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:51:15,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:51:15,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:51:15" (1/1) ... [2021-02-23 13:51:15,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17b5412c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:15, skipping insertion in model container [2021-02-23 13:51:15,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:51:15" (1/1) ... [2021-02-23 13:51:15,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:51:15,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:51:16,109 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] [2021-02-23 13:51:16,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:51:16,136 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:51:16,151 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] [2021-02-23 13:51:16,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:51:16,179 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:51:16,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:16 WrapperNode [2021-02-23 13:51:16,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:51:16,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:51:16,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:51:16,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:51:16,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:16" (1/1) ... [2021-02-23 13:51:16,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:16" (1/1) ... [2021-02-23 13:51:16,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:16" (1/1) ... [2021-02-23 13:51:16,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:16" (1/1) ... [2021-02-23 13:51:16,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:16" (1/1) ... [2021-02-23 13:51:16,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:16" (1/1) ... [2021-02-23 13:51:16,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:16" (1/1) ... [2021-02-23 13:51:16,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:51:16,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:51:16,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:51:16,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:51:16,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:16" (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 13:51:16,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:51:16,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:51:16,386 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:51:16,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 13:51:16,386 INFO L138 BoogieDeclarations]: Found implementation of procedure printEven [2021-02-23 13:51:16,386 INFO L138 BoogieDeclarations]: Found implementation of procedure printOdd [2021-02-23 13:51:16,387 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:51:16,387 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:51:16,387 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:51:16,387 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 13:51:16,387 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 13:51:16,388 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:51:16,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:51:16,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:51:16,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 13:51:16,388 INFO L130 BoogieDeclarations]: Found specification of procedure printEven [2021-02-23 13:51:16,389 INFO L130 BoogieDeclarations]: Found specification of procedure printOdd [2021-02-23 13:51:16,389 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:51:16,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:51:16,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:51:16,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:51:16,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:51:16,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:51:16,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:51:16,811 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:51:16,811 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-23 13:51:16,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:51:16 BoogieIcfgContainer [2021-02-23 13:51:16,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:51:16,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:51:16,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:51:16,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:51:16,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:51:15" (1/3) ... [2021-02-23 13:51:16,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@acfecf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:51:16, skipping insertion in model container [2021-02-23 13:51:16,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:16" (2/3) ... [2021-02-23 13:51:16,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@acfecf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:51:16, skipping insertion in model container [2021-02-23 13:51:16,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:51:16" (3/3) ... [2021-02-23 13:51:16,848 INFO L111 eAbstractionObserver]: Analyzing ICFG sanfoundry_24-1.i [2021-02-23 13:51:16,857 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:51:16,862 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:51:16,883 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:51:16,923 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:51:16,924 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:51:16,924 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:51:16,924 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:51:16,924 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:51:16,925 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:51:16,925 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:51:16,925 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:51:16,951 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2021-02-23 13:51:16,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-02-23 13:51:16,960 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:16,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:51:16,962 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:16,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:16,973 INFO L82 PathProgramCache]: Analyzing trace with hash 349610285, now seen corresponding path program 1 times [2021-02-23 13:51:16,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:16,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082158270] [2021-02-23 13:51:16,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:17,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:17,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:17,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:17,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:17,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:51:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:17,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:17,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:17,279 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 13:51:17,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082158270] [2021-02-23 13:51:17,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:51:17,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 13:51:17,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55074154] [2021-02-23 13:51:17,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 13:51:17,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:51:17,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 13:51:17,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:51:17,305 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2021-02-23 13:51:17,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:51:17,494 INFO L93 Difference]: Finished difference Result 70 states and 90 transitions. [2021-02-23 13:51:17,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:51:17,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2021-02-23 13:51:17,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:51:17,506 INFO L225 Difference]: With dead ends: 70 [2021-02-23 13:51:17,507 INFO L226 Difference]: Without dead ends: 34 [2021-02-23 13:51:17,511 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 [2021-02-23 13:51:17,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-02-23 13:51:17,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-02-23 13:51:17,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-02-23 13:51:17,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2021-02-23 13:51:17,562 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 16 [2021-02-23 13:51:17,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:51:17,563 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2021-02-23 13:51:17,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 13:51:17,563 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2021-02-23 13:51:17,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-02-23 13:51:17,565 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:17,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:51:17,565 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:51:17,566 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:17,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:17,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1528691315, now seen corresponding path program 1 times [2021-02-23 13:51:17,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:17,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790449784] [2021-02-23 13:51:17,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:17,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:17,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:17,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:17,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:17,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:17,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:17,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:17,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:51:17,686 WARN L141 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-02-23 13:51:17,687 WARN L147 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size 1 [2021-02-23 13:51:17,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:17,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:17,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:51:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:17,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:17,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:17,743 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 13:51:17,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790449784] [2021-02-23 13:51:17,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:51:17,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 13:51:17,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403103396] [2021-02-23 13:51:17,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 13:51:17,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:51:17,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 13:51:17,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:51:17,747 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 6 states. [2021-02-23 13:51:17,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:51:17,984 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2021-02-23 13:51:17,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 13:51:17,985 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2021-02-23 13:51:17,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:51:17,987 INFO L225 Difference]: With dead ends: 75 [2021-02-23 13:51:17,987 INFO L226 Difference]: Without dead ends: 46 [2021-02-23 13:51:17,988 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 [2021-02-23 13:51:17,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-02-23 13:51:18,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 36. [2021-02-23 13:51:18,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-02-23 13:51:18,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2021-02-23 13:51:18,002 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 16 [2021-02-23 13:51:18,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:51:18,002 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2021-02-23 13:51:18,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 13:51:18,003 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2021-02-23 13:51:18,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-02-23 13:51:18,004 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:18,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:51:18,004 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:51:18,005 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:18,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:18,005 INFO L82 PathProgramCache]: Analyzing trace with hash 280728469, now seen corresponding path program 1 times [2021-02-23 13:51:18,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:18,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432799357] [2021-02-23 13:51:18,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:18,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:18,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:18,178 WARN L141 QuantifierPusher]: treesize reduction 28, result has 55.6 percent of original size [2021-02-23 13:51:18,184 WARN L147 QuantifierPusher]: treesize reduction 28, result has 55.6 percent of original size 35 [2021-02-23 13:51:18,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:18,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:51:18,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:18,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:51:18,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:18,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 13:51:18,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:18,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:51:18,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:18,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:51:18,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:18,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:18,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:51:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:18,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:18,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:18,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-23 13:51:18,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432799357] [2021-02-23 13:51:18,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:51:18,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 13:51:18,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549380741] [2021-02-23 13:51:18,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 13:51:18,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:51:18,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 13:51:18,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-02-23 13:51:18,427 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 9 states. [2021-02-23 13:51:18,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:51:18,977 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2021-02-23 13:51:18,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 13:51:18,978 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2021-02-23 13:51:18,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:51:18,979 INFO L225 Difference]: With dead ends: 42 [2021-02-23 13:51:18,979 INFO L226 Difference]: Without dead ends: 40 [2021-02-23 13:51:18,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-02-23 13:51:18,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-02-23 13:51:18,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-02-23 13:51:18,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-02-23 13:51:18,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2021-02-23 13:51:18,990 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 18 [2021-02-23 13:51:18,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:51:18,991 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2021-02-23 13:51:18,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 13:51:18,991 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2021-02-23 13:51:18,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-23 13:51:18,992 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:18,992 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] [2021-02-23 13:51:18,992 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 13:51:18,993 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:18,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:18,993 INFO L82 PathProgramCache]: Analyzing trace with hash 119894203, now seen corresponding path program 1 times [2021-02-23 13:51:18,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:18,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480300194] [2021-02-23 13:51:18,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:19,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:19,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:19,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:19,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 13:51:19,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:19,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 13:51:19,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:19,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 13:51:19,190 WARN L141 QuantifierPusher]: treesize reduction 62, result has 11.4 percent of original size [2021-02-23 13:51:19,191 WARN L147 QuantifierPusher]: treesize reduction 62, result has 11.4 percent of original size 8 [2021-02-23 13:51:19,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:19,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:51:19,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:19,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:51:19,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:19,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:19,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:51:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:19,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:19,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:19,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-23 13:51:19,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480300194] [2021-02-23 13:51:19,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:51:19,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 13:51:19,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464081962] [2021-02-23 13:51:19,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 13:51:19,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:51:19,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 13:51:19,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-02-23 13:51:19,302 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 9 states. [2021-02-23 13:51:19,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:51:19,617 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-02-23 13:51:19,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 13:51:19,617 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2021-02-23 13:51:19,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:51:19,618 INFO L225 Difference]: With dead ends: 40 [2021-02-23 13:51:19,618 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 13:51:19,619 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 [2021-02-23 13:51:19,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 13:51:19,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 13:51:19,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 13:51:19,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 13:51:19,620 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2021-02-23 13:51:19,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:51:19,620 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 13:51:19,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 13:51:19,620 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 13:51:19,620 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 13:51:19,621 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 13:51:19,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 13:51:19,793 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-23 13:51:19,793 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-23 13:51:19,794 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-23 13:51:19,794 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-23 13:51:19,794 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)|)) [2021-02-23 13:51:19,794 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-23 13:51:19,794 INFO L192 CegarLoopUtils]: At program point printOddENTRY(lines 18 20) the Hoare annotation is: true [2021-02-23 13:51:19,795 INFO L189 CegarLoopUtils]: For program point printOddFINAL(lines 18 20) no Hoare annotation was computed. [2021-02-23 13:51:19,795 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)))) [2021-02-23 13:51:19,795 INFO L189 CegarLoopUtils]: For program point printOddEXIT(lines 18 20) no Hoare annotation was computed. [2021-02-23 13:51:19,795 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-23 13:51:19,795 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 13:51:19,795 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 13:51:19,795 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-23 13:51:19,796 INFO L189 CegarLoopUtils]: For program point L27-2(lines 27 30) no Hoare annotation was computed. [2021-02-23 13:51:19,796 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 21 47) no Hoare annotation was computed. [2021-02-23 13:51:19,796 INFO L192 CegarLoopUtils]: At program point L27-3(lines 27 30) the Hoare annotation is: true [2021-02-23 13:51:19,796 INFO L189 CegarLoopUtils]: For program point L27-4(lines 27 30) no Hoare annotation was computed. [2021-02-23 13:51:19,796 INFO L185 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (<= |main_#t~mem8| (* 2 (div |main_#t~mem8| 2))) [2021-02-23 13:51:19,796 INFO L189 CegarLoopUtils]: For program point L36-1(line 36) no Hoare annotation was computed. [2021-02-23 13:51:19,797 INFO L189 CegarLoopUtils]: For program point L32-2(lines 32 38) no Hoare annotation was computed. [2021-02-23 13:51:19,797 INFO L192 CegarLoopUtils]: At program point L32-3(lines 32 38) the Hoare annotation is: true [2021-02-23 13:51:19,797 INFO L189 CegarLoopUtils]: For program point L32-4(lines 32 38) no Hoare annotation was computed. [2021-02-23 13:51:19,797 INFO L189 CegarLoopUtils]: For program point L41(lines 41 44) no Hoare annotation was computed. [2021-02-23 13:51:19,797 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 21 47) no Hoare annotation was computed. [2021-02-23 13:51:19,797 INFO L189 CegarLoopUtils]: For program point L34(lines 34 37) no Hoare annotation was computed. [2021-02-23 13:51:19,797 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 21 47) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-02-23 13:51:19,798 INFO L185 CegarLoopUtils]: At program point L43(line 43) the Hoare annotation is: (let ((.cse0 (+ |main_#t~mem11| 1))) (<= .cse0 (* 2 (div .cse0 2)))) [2021-02-23 13:51:19,798 INFO L189 CegarLoopUtils]: For program point L43-1(line 43) no Hoare annotation was computed. [2021-02-23 13:51:19,798 INFO L189 CegarLoopUtils]: For program point L39-2(lines 39 45) no Hoare annotation was computed. [2021-02-23 13:51:19,798 INFO L192 CegarLoopUtils]: At program point L39-3(lines 39 45) the Hoare annotation is: true [2021-02-23 13:51:19,798 INFO L189 CegarLoopUtils]: For program point L39-4(lines 39 45) no Hoare annotation was computed. [2021-02-23 13:51:19,798 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))))) [2021-02-23 13:51:19,798 INFO L189 CegarLoopUtils]: For program point printEvenEXIT(lines 15 17) no Hoare annotation was computed. [2021-02-23 13:51:19,798 INFO L192 CegarLoopUtils]: At program point printEvenENTRY(lines 15 17) the Hoare annotation is: true [2021-02-23 13:51:19,799 INFO L189 CegarLoopUtils]: For program point printEvenFINAL(lines 15 17) no Hoare annotation was computed. [2021-02-23 13:51:19,799 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(line 14) the Hoare annotation is: true [2021-02-23 13:51:19,799 INFO L189 CegarLoopUtils]: For program point L14(line 14) no Hoare annotation was computed. [2021-02-23 13:51:19,799 INFO L189 CegarLoopUtils]: For program point L14-1(line 14) no Hoare annotation was computed. [2021-02-23 13:51:19,799 INFO L189 CegarLoopUtils]: For program point L14-3(line 14) no Hoare annotation was computed. [2021-02-23 13:51:19,799 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(line 14) no Hoare annotation was computed. [2021-02-23 13:51:19,799 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-02-23 13:51:19,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:51:19 BoogieIcfgContainer [2021-02-23 13:51:19,810 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:51:19,812 INFO L168 Benchmark]: Toolchain (without parser) took 3944.26 ms. Allocated memory was 157.3 MB in the beginning and 188.7 MB in the end (delta: 31.5 MB). Free memory was 132.9 MB in the beginning and 154.5 MB in the end (delta: -21.6 MB). Peak memory consumption was 101.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:19,813 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 157.3 MB. Free memory was 130.0 MB in the beginning and 129.7 MB in the end (delta: 215.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:51:19,814 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.65 ms. Allocated memory is still 157.3 MB. Free memory was 131.9 MB in the beginning and 122.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:19,815 INFO L168 Benchmark]: Boogie Preprocessor took 80.28 ms. Allocated memory is still 157.3 MB. Free memory was 122.3 MB in the beginning and 120.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:19,815 INFO L168 Benchmark]: RCFGBuilder took 550.23 ms. Allocated memory is still 157.3 MB. Free memory was 120.6 MB in the beginning and 103.6 MB in the end (delta: 17.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:19,816 INFO L168 Benchmark]: TraceAbstraction took 2971.92 ms. Allocated memory was 157.3 MB in the beginning and 188.7 MB in the end (delta: 31.5 MB). Free memory was 140.4 MB in the beginning and 154.5 MB in the end (delta: -14.1 MB). Peak memory consumption was 108.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:19,820 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 157.3 MB. Free memory was 130.0 MB in the beginning and 129.7 MB in the end (delta: 215.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 295.65 ms. Allocated memory is still 157.3 MB. Free memory was 131.9 MB in the beginning and 122.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 80.28 ms. Allocated memory is still 157.3 MB. Free memory was 122.3 MB in the beginning and 120.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 550.23 ms. Allocated memory is still 157.3 MB. Free memory was 120.6 MB in the beginning and 103.6 MB in the end (delta: 17.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2971.92 ms. Allocated memory was 157.3 MB in the beginning and 188.7 MB in the end (delta: 31.5 MB). Free memory was 140.4 MB in the beginning and 154.5 MB in the end (delta: -14.1 MB). Peak memory consumption was 108.1 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: 2.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.3s, 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, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s 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, 0.8s 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...