/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_10x0-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:56:52,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:56:52,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:56:52,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 17:56:52,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:56:52,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:56:52,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:56:52,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:56:52,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:56:52,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:56:52,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:56:52,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:56:52,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:56:52,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:56:52,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:56:52,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:56:52,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 17:56:52,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:56:52,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:56:52,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:56:52,221 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 17:56:52,236 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:56:52,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:56:52,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:56:52,239 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:56:52,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:56:52,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:56:52,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:56:52,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:56:52,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:56:52,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:56:52,241 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:56:52,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:56:52,241 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:56:52,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:56:52,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:56:52,242 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:56:52,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:56:52,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:56:52,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:56:52,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:56:52,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:56:52,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:56:52,244 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:56:52,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:56:52,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:56:52,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:56:52,688 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:56:52,691 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:56:52,693 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_10x0-1.c [2021-02-23 17:56:52,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/689f96f3a/909cd06639d34e9d9fcceb0a7f836703/FLAGbf7056605 [2021-02-23 17:56:53,415 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:56:53,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/sum_10x0-1.c [2021-02-23 17:56:53,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/689f96f3a/909cd06639d34e9d9fcceb0a7f836703/FLAGbf7056605 [2021-02-23 17:56:53,827 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/689f96f3a/909cd06639d34e9d9fcceb0a7f836703 [2021-02-23 17:56:53,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:56:53,848 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:56:53,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:56:53,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:56:53,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:56:53,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:56:53" (1/1) ... [2021-02-23 17:56:53,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eb3585e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:56:53, skipping insertion in model container [2021-02-23 17:56:53,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:56:53" (1/1) ... [2021-02-23 17:56:53,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:56:53,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:56:54,136 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/sum_10x0-1.c[481,494] [2021-02-23 17:56:54,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:56:54,154 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:56:54,177 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/sum_10x0-1.c[481,494] [2021-02-23 17:56:54,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:56:54,197 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:56:54,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:56:54 WrapperNode [2021-02-23 17:56:54,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:56:54,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:56:54,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:56:54,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:56:54,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:56:54" (1/1) ... [2021-02-23 17:56:54,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:56:54" (1/1) ... [2021-02-23 17:56:54,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:56:54" (1/1) ... [2021-02-23 17:56:54,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:56:54" (1/1) ... [2021-02-23 17:56:54,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:56:54" (1/1) ... [2021-02-23 17:56:54,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:56:54" (1/1) ... [2021-02-23 17:56:54,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:56:54" (1/1) ... [2021-02-23 17:56:54,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:56:54,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:56:54,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:56:54,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:56:54,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:56:54" (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 17:56:54,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:56:54,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:56:54,385 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:56:54,386 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2021-02-23 17:56:54,386 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:56:54,386 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:56:54,386 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:56:54,387 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:56:54,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:56:54,388 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2021-02-23 17:56:54,388 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:56:54,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:56:54,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:56:54,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:56:54,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:56:54,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:56:54,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:56:54,770 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:56:54,770 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 17:56:54,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:56:54 BoogieIcfgContainer [2021-02-23 17:56:54,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:56:54,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:56:54,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:56:54,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:56:54,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:56:53" (1/3) ... [2021-02-23 17:56:54,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26603533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:56:54, skipping insertion in model container [2021-02-23 17:56:54,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:56:54" (2/3) ... [2021-02-23 17:56:54,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26603533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:56:54, skipping insertion in model container [2021-02-23 17:56:54,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:56:54" (3/3) ... [2021-02-23 17:56:54,783 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_10x0-1.c [2021-02-23 17:56:54,792 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:56:54,797 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:56:54,825 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:56:54,884 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:56:54,884 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:56:54,884 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:56:54,884 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:56:54,884 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:56:54,885 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:56:54,885 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:56:54,885 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:56:54,908 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2021-02-23 17:56:54,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-23 17:56:54,918 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:54,920 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, 1, 1, 1] [2021-02-23 17:56:54,920 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:54,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:54,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1485133070, now seen corresponding path program 1 times [2021-02-23 17:56:54,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:54,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594847341] [2021-02-23 17:56:54,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:55,022 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:55,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:55,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:55,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:55,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:55,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:55,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:55,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:55,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:55,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:55,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:56:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:55,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:55,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:55,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:55,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:55,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:55,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:55,357 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 17:56:55,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594847341] [2021-02-23 17:56:55,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:55,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 17:56:55,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229631483] [2021-02-23 17:56:55,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 17:56:55,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:55,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 17:56:55,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 17:56:55,385 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 7 states. [2021-02-23 17:56:55,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:55,687 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2021-02-23 17:56:55,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 17:56:55,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2021-02-23 17:56:55,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:55,701 INFO L225 Difference]: With dead ends: 48 [2021-02-23 17:56:55,701 INFO L226 Difference]: Without dead ends: 33 [2021-02-23 17:56:55,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-23 17:56:55,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-02-23 17:56:55,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-02-23 17:56:55,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-02-23 17:56:55,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2021-02-23 17:56:55,764 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 26 [2021-02-23 17:56:55,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:55,765 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2021-02-23 17:56:55,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 17:56:55,765 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2021-02-23 17:56:55,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-23 17:56:55,768 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:55,768 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:56:55,769 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:56:55,769 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:55,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:55,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1822905144, now seen corresponding path program 1 times [2021-02-23 17:56:55,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:55,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077380165] [2021-02-23 17:56:55,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:55,775 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:55,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:55,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:55,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:55,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:55,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:55,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:55,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:55,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:55,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:55,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:56:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:55,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:55,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:55,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:55,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:55,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:56:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:55,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:55,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:55,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:55,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:56,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:56,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:56,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-02-23 17:56:56,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077380165] [2021-02-23 17:56:56,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:56,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 17:56:56,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621768170] [2021-02-23 17:56:56,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 17:56:56,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:56,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 17:56:56,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-02-23 17:56:56,028 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 8 states. [2021-02-23 17:56:56,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:56,318 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2021-02-23 17:56:56,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 17:56:56,319 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2021-02-23 17:56:56,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:56,321 INFO L225 Difference]: With dead ends: 44 [2021-02-23 17:56:56,321 INFO L226 Difference]: Without dead ends: 38 [2021-02-23 17:56:56,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-02-23 17:56:56,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-02-23 17:56:56,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-02-23 17:56:56,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-02-23 17:56:56,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2021-02-23 17:56:56,337 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 35 [2021-02-23 17:56:56,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:56,338 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2021-02-23 17:56:56,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 17:56:56,338 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2021-02-23 17:56:56,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-23 17:56:56,340 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:56,340 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 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 17:56:56,340 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:56:56,341 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:56,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:56,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1004193542, now seen corresponding path program 2 times [2021-02-23 17:56:56,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:56,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363916740] [2021-02-23 17:56:56,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:56,347 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:56,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:56,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:56,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:56,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:56,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:56,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:56,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:56,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:56,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:56,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:56:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:56,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:56,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:56,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:56,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:56,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:56:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:56,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:56,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:56,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:56,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:56,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:56:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:56,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:56,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:56,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:56,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:56,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:56,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:56,612 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-02-23 17:56:56,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363916740] [2021-02-23 17:56:56,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:56,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 17:56:56,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510857823] [2021-02-23 17:56:56,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 17:56:56,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:56,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 17:56:56,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-02-23 17:56:56,615 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 9 states. [2021-02-23 17:56:56,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:56,965 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2021-02-23 17:56:56,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-23 17:56:56,966 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2021-02-23 17:56:56,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:56,968 INFO L225 Difference]: With dead ends: 49 [2021-02-23 17:56:56,968 INFO L226 Difference]: Without dead ends: 43 [2021-02-23 17:56:56,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-02-23 17:56:56,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-02-23 17:56:56,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-02-23 17:56:56,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-02-23 17:56:56,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2021-02-23 17:56:56,984 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 44 [2021-02-23 17:56:56,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:56,985 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2021-02-23 17:56:56,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 17:56:56,985 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2021-02-23 17:56:56,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-23 17:56:56,987 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:56,987 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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 17:56:56,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 17:56:56,988 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:56,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:56,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1655724848, now seen corresponding path program 3 times [2021-02-23 17:56:56,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:56,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159406295] [2021-02-23 17:56:56,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:56,992 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:57,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:57,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:57,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:56:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:56:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:56:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:56:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:57,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,239 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-02-23 17:56:57,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159406295] [2021-02-23 17:56:57,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:57,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 17:56:57,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701969633] [2021-02-23 17:56:57,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 17:56:57,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:57,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 17:56:57,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-23 17:56:57,244 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 10 states. [2021-02-23 17:56:57,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:57,620 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2021-02-23 17:56:57,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 17:56:57,621 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2021-02-23 17:56:57,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:57,622 INFO L225 Difference]: With dead ends: 54 [2021-02-23 17:56:57,623 INFO L226 Difference]: Without dead ends: 48 [2021-02-23 17:56:57,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-02-23 17:56:57,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-02-23 17:56:57,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-02-23 17:56:57,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-02-23 17:56:57,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2021-02-23 17:56:57,638 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 53 [2021-02-23 17:56:57,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:57,638 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2021-02-23 17:56:57,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 17:56:57,639 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2021-02-23 17:56:57,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-23 17:56:57,640 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:57,640 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 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 17:56:57,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 17:56:57,641 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:57,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:57,642 INFO L82 PathProgramCache]: Analyzing trace with hash 54098690, now seen corresponding path program 4 times [2021-02-23 17:56:57,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:57,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876595428] [2021-02-23 17:56:57,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:57,644 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:57,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:57,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:57,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:56:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:56:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:56:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:56:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:56:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:57,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,883 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-02-23 17:56:57,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876595428] [2021-02-23 17:56:57,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:57,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 17:56:57,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363255803] [2021-02-23 17:56:57,885 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 17:56:57,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:57,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 17:56:57,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-02-23 17:56:57,886 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 11 states. [2021-02-23 17:56:58,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:58,310 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2021-02-23 17:56:58,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 17:56:58,310 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 62 [2021-02-23 17:56:58,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:58,312 INFO L225 Difference]: With dead ends: 59 [2021-02-23 17:56:58,312 INFO L226 Difference]: Without dead ends: 53 [2021-02-23 17:56:58,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2021-02-23 17:56:58,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-02-23 17:56:58,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-02-23 17:56:58,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-02-23 17:56:58,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2021-02-23 17:56:58,327 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 62 [2021-02-23 17:56:58,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:58,328 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2021-02-23 17:56:58,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 17:56:58,328 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2021-02-23 17:56:58,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-02-23 17:56:58,329 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:58,330 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 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 17:56:58,330 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 17:56:58,330 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:58,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:58,331 INFO L82 PathProgramCache]: Analyzing trace with hash -406982872, now seen corresponding path program 5 times [2021-02-23 17:56:58,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:58,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791276537] [2021-02-23 17:56:58,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:58,334 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:58,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:58,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:58,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:58,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:58,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:58,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:58,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:58,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:58,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:58,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:56:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:58,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:58,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:58,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:58,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:58,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:56:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:58,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:58,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:58,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:58,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:58,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:56:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:58,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:58,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:58,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:58,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:58,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:56:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:58,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:58,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:58,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:58,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:58,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:56:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:58,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:58,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:58,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:58,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:58,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:56:58,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:58,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:58,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:58,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:58,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:58,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:58,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:58,652 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-02-23 17:56:58,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791276537] [2021-02-23 17:56:58,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:58,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 17:56:58,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507941867] [2021-02-23 17:56:58,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 17:56:58,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:58,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 17:56:58,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-02-23 17:56:58,655 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 12 states. [2021-02-23 17:56:59,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:59,122 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2021-02-23 17:56:59,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 17:56:59,122 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2021-02-23 17:56:59,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:59,124 INFO L225 Difference]: With dead ends: 64 [2021-02-23 17:56:59,124 INFO L226 Difference]: Without dead ends: 58 [2021-02-23 17:56:59,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2021-02-23 17:56:59,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-02-23 17:56:59,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-02-23 17:56:59,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-02-23 17:56:59,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2021-02-23 17:56:59,141 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 71 [2021-02-23 17:56:59,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:59,142 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2021-02-23 17:56:59,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 17:56:59,142 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2021-02-23 17:56:59,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-02-23 17:56:59,143 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:59,143 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 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 17:56:59,144 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 17:56:59,144 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:59,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:59,144 INFO L82 PathProgramCache]: Analyzing trace with hash 507179274, now seen corresponding path program 6 times [2021-02-23 17:56:59,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:59,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215847123] [2021-02-23 17:56:59,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:59,147 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:59,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:59,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:59,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:59,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:59,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:59,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:59,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:59,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:59,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:59,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:56:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:59,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:59,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:59,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:59,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:59,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:56:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:59,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:59,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:59,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:59,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:59,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:56:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:59,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:59,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:59,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:59,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:59,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:56:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:59,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:59,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:59,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:59,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:59,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:56:59,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:59,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:59,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:59,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:59,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:59,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:56:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:59,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:59,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:59,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:59,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:59,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:56:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:59,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:59,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:59,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:59,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:59,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:59,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:59,515 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-02-23 17:56:59,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215847123] [2021-02-23 17:56:59,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:59,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-23 17:56:59,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242182747] [2021-02-23 17:56:59,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 17:56:59,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:59,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 17:56:59,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-02-23 17:56:59,518 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 13 states. [2021-02-23 17:56:59,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:59,998 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2021-02-23 17:56:59,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 17:56:59,998 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 80 [2021-02-23 17:56:59,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:00,000 INFO L225 Difference]: With dead ends: 69 [2021-02-23 17:57:00,000 INFO L226 Difference]: Without dead ends: 63 [2021-02-23 17:57:00,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2021-02-23 17:57:00,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-02-23 17:57:00,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-02-23 17:57:00,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-02-23 17:57:00,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2021-02-23 17:57:00,018 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 80 [2021-02-23 17:57:00,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:00,018 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2021-02-23 17:57:00,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 17:57:00,019 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2021-02-23 17:57:00,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-02-23 17:57:00,020 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:00,020 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 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 17:57:00,021 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 17:57:00,021 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:00,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:00,021 INFO L82 PathProgramCache]: Analyzing trace with hash -326332640, now seen corresponding path program 7 times [2021-02-23 17:57:00,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:00,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057106560] [2021-02-23 17:57:00,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:00,024 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:00,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:00,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:00,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:00,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:00,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:00,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:00,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:00,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:00,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:00,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:00,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:00,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:00,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:00,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:00,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:00,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:00,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:00,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:00,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:00,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:00,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:00,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:00,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:00,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:00,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:00,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:00,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:00,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:00,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:00,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:00,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:00,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:00,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:00,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:00,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:00,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:00,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:00,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:00,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:00,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:00,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:00,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:00,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:00,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:00,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:00,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:00,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:00,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:00,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:00,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:00,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:00,371 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-02-23 17:57:00,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057106560] [2021-02-23 17:57:00,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:00,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 17:57:00,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280887593] [2021-02-23 17:57:00,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 17:57:00,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:00,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 17:57:00,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-02-23 17:57:00,375 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 14 states. [2021-02-23 17:57:00,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:00,859 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2021-02-23 17:57:00,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-23 17:57:00,860 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 89 [2021-02-23 17:57:00,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:00,861 INFO L225 Difference]: With dead ends: 74 [2021-02-23 17:57:00,861 INFO L226 Difference]: Without dead ends: 68 [2021-02-23 17:57:00,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552 [2021-02-23 17:57:00,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-02-23 17:57:00,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-02-23 17:57:00,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-02-23 17:57:00,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2021-02-23 17:57:00,879 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 89 [2021-02-23 17:57:00,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:00,880 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2021-02-23 17:57:00,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 17:57:00,880 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2021-02-23 17:57:00,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-02-23 17:57:00,881 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:00,882 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 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 17:57:00,882 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 17:57:00,882 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:00,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:00,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1949113106, now seen corresponding path program 8 times [2021-02-23 17:57:00,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:00,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782594573] [2021-02-23 17:57:00,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:00,886 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:00,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:00,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:00,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:00,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:00,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:00,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:00,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:00,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:00,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:00,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:00,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:00,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:01,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:01,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:01,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:01,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:01,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:01,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:01,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:01,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:01,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:01,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:01,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:01,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:01,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:01,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:01,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:01,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:01,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:01,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:01,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:01,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:01,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:01,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:01,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:01,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:01,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:01,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:01,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:01,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:01,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:01,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:01,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:01,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:01,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:01,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:01,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:01,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:01,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:01,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:01,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:01,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:01,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:01,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:01,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:01,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:01,277 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-02-23 17:57:01,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782594573] [2021-02-23 17:57:01,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:01,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-23 17:57:01,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310790878] [2021-02-23 17:57:01,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 17:57:01,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:01,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 17:57:01,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-02-23 17:57:01,280 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 15 states. [2021-02-23 17:57:01,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:01,810 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2021-02-23 17:57:01,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 17:57:01,811 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 98 [2021-02-23 17:57:01,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:01,812 INFO L225 Difference]: With dead ends: 79 [2021-02-23 17:57:01,813 INFO L226 Difference]: Without dead ends: 73 [2021-02-23 17:57:01,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=208, Invalid=442, Unknown=0, NotChecked=0, Total=650 [2021-02-23 17:57:01,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-02-23 17:57:01,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-02-23 17:57:01,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-23 17:57:01,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2021-02-23 17:57:01,830 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 98 [2021-02-23 17:57:01,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:01,831 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2021-02-23 17:57:01,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 17:57:01,831 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2021-02-23 17:57:01,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-02-23 17:57:01,832 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:01,832 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 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 17:57:01,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 17:57:01,833 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:01,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:01,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1213774616, now seen corresponding path program 9 times [2021-02-23 17:57:01,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:01,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633402512] [2021-02-23 17:57:01,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:01,836 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:01,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:01,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:01,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:01,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:01,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:01,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:01,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:01,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:01,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:01,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:01,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:01,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:01,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:01,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:01,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:01,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:01,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:01,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:01,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:01,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:02,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:02,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:02,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:02,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:02,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:02,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:02,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:02,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:02,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:02,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:02,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:02,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:02,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:02,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:02,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:02,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:02,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:02,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:02,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:02,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:02,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:02,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:02,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:02,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:02,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:02,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:02,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:02,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:02,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:02,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:02,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:02,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:02,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:02,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:02,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:02,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:02,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:02,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:02,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:02,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:02,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:02,310 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-02-23 17:57:02,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633402512] [2021-02-23 17:57:02,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:02,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-23 17:57:02,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389073019] [2021-02-23 17:57:02,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 17:57:02,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:02,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 17:57:02,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2021-02-23 17:57:02,313 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 16 states. [2021-02-23 17:57:02,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:02,928 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2021-02-23 17:57:02,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 17:57:02,929 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 107 [2021-02-23 17:57:02,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:02,930 INFO L225 Difference]: With dead ends: 84 [2021-02-23 17:57:02,930 INFO L226 Difference]: Without dead ends: 78 [2021-02-23 17:57:02,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=244, Invalid=512, Unknown=0, NotChecked=0, Total=756 [2021-02-23 17:57:02,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-02-23 17:57:02,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-02-23 17:57:02,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-23 17:57:02,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2021-02-23 17:57:02,947 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 107 [2021-02-23 17:57:02,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:02,948 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2021-02-23 17:57:02,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 17:57:02,948 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2021-02-23 17:57:02,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-02-23 17:57:02,949 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:57:02,950 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 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 17:57:02,950 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 17:57:02,950 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:57:02,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:57:02,951 INFO L82 PathProgramCache]: Analyzing trace with hash -241993446, now seen corresponding path program 10 times [2021-02-23 17:57:02,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:57:02,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521278994] [2021-02-23 17:57:02,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:57:02,953 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:57:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:03,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:03,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:03,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:03,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 17:57:03,033 WARN L141 QuantifierPusher]: treesize reduction 7, result has 76.7 percent of original size [2021-02-23 17:57:03,035 WARN L147 QuantifierPusher]: treesize reduction 7, result has 76.7 percent of original size 23 [2021-02-23 17:57:03,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:03,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:57:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:03,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:57:03,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:57:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:03,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:03,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:03,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:03,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:03,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:03,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:03,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:03,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:03,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:03,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:03,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:03,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:03,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:03,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:03,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:03,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:03,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:03,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:03,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:03,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:03,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:03,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:03,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:03,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:03,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:03,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:03,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:03,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:03,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:03,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:03,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:03,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:03,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:03,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:03,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:03,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:03,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:03,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:03,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:03,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:03,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:03,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:03,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:03,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:03,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:03,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:03,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:03,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 17:57:03,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:03,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:57:03,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:57:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:57:03,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:57:03,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:57:03,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:03,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 17:57:04,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:57:04,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:57:04,236 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-02-23 17:57:04,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521278994] [2021-02-23 17:57:04,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:57:04,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-02-23 17:57:04,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825191992] [2021-02-23 17:57:04,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-02-23 17:57:04,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:57:04,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-02-23 17:57:04,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2021-02-23 17:57:04,239 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 32 states. [2021-02-23 17:57:09,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:09,013 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2021-02-23 17:57:09,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-02-23 17:57:09,013 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 116 [2021-02-23 17:57:09,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:09,014 INFO L225 Difference]: With dead ends: 78 [2021-02-23 17:57:09,014 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 17:57:09,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=965, Invalid=4147, Unknown=0, NotChecked=0, Total=5112 [2021-02-23 17:57:09,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 17:57:09,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 17:57:09,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 17:57:09,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 17:57:09,019 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 116 [2021-02-23 17:57:09,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:09,019 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 17:57:09,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2021-02-23 17:57:09,019 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 17:57:09,020 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 17:57:09,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 17:57:09,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 17:57:10,047 WARN L202 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 71 [2021-02-23 17:57:10,752 WARN L202 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 62 [2021-02-23 17:57:11,396 WARN L202 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 62 [2021-02-23 17:57:12,005 WARN L202 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 62 [2021-02-23 17:57:12,595 WARN L202 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 62 [2021-02-23 17:57:12,756 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-23 17:57:12,757 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-23 17:57:12,757 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-23 17:57:12,757 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-23 17:57:12,758 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-23 17:57:12,758 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 17:57:12,758 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-23 17:57:12,758 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 17:57:12,758 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-23 17:57:12,758 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-23 17:57:12,759 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-23 17:57:12,759 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-23 17:57:12,759 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-23 17:57:12,759 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-23 17:57:12,759 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 17:57:12,759 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 17:57:12,759 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-23 17:57:12,762 INFO L185 CegarLoopUtils]: At program point sumEXIT(lines 5 11) the Hoare annotation is: (let ((.cse2 (+ |sum_#in~n| |sum_#in~m|))) (let ((.cse0 (= sum_~n |sum_#in~n|)) (.cse1 (= sum_~m |sum_#in~m|)) (.cse3 (<= |sum_#res| .cse2))) (or (and .cse0 (<= |sum_#res| |sum_#in~m|) .cse1 (<= .cse2 |sum_#res|)) (and .cse0 .cse1 (<= |sum_#in~n| 8) .cse3 (<= (+ |sum_#in~m| 8) |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 6) |sum_#res|) .cse1 .cse3 (<= |sum_#in~n| 6)) (and .cse0 .cse1 .cse3 (<= (+ |sum_#in~m| 9) |sum_#res|) (<= |sum_#in~n| 9)) (and .cse0 .cse1 (<= (+ |sum_#in~m| 7) |sum_#res|) (<= |sum_#in~n| 7) .cse3) (and .cse0 (<= (+ |sum_#in~m| 1) |sum_#res|) .cse1 (<= |sum_#in~n| 1) .cse3) (and .cse0 (<= (+ |sum_#in~m| 10) |sum_#res|) .cse1 .cse3) (and .cse0 .cse1 (<= |sum_#in~n| 3) .cse3 (<= (+ |sum_#in~m| 3) |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 2) |sum_#res|) (<= |sum_#in~n| 2) .cse1 .cse3) (and .cse0 (<= |sum_#in~n| 4) .cse1 .cse3 (<= (+ |sum_#in~m| 4) |sum_#res|)) (and .cse0 (<= |sum_#in~n| 5) .cse1 .cse3 (<= (+ |sum_#in~m| 5) |sum_#res|))))) [2021-02-23 17:57:12,762 INFO L185 CegarLoopUtils]: At program point L9(line 9) the Hoare annotation is: (and (= sum_~n |sum_#in~n|) (<= 1 sum_~n) (= sum_~m |sum_#in~m|)) [2021-02-23 17:57:12,762 INFO L185 CegarLoopUtils]: At program point L9-1(line 9) the Hoare annotation is: (and (let ((.cse0 (= sum_~n |sum_#in~n|))) (or (and .cse0 (<= |sum_#in~n| 9)) (and .cse0 (<= (+ |sum_#in~m| 10) |sum_#t~ret7|)))) (let ((.cse1 (= sum_~m |sum_#in~m|)) (.cse2 (<= |sum_#t~ret7| (+ |sum_#in~n| |sum_#in~m|)))) (or (and (<= |sum_#in~n| 5) .cse1 (<= (+ |sum_#in~m| 5) |sum_#t~ret7|) .cse2) (and .cse1 (<= |sum_#in~n| 7) (<= (+ |sum_#in~m| 7) |sum_#t~ret7|) .cse2) (and .cse1 (<= (+ |sum_#in~m| 9) |sum_#t~ret7|) .cse2) (and (<= (+ |sum_#in~m| 4) |sum_#t~ret7|) (<= |sum_#in~n| 4) .cse1 .cse2) (and .cse1 (<= |sum_#in~n| 8) (<= (+ |sum_#in~m| 8) |sum_#t~ret7|) .cse2) (and (<= (+ |sum_#in~m| 3) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 3) .cse2) (and (<= (+ |sum_#in~m| 1) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 1) .cse2) (and (<= |sum_#in~n| 2) .cse1 .cse2 (<= (+ |sum_#in~m| 2) |sum_#t~ret7|)) (and .cse1 (<= |sum_#in~n| 6) (<= (+ |sum_#in~m| 6) |sum_#t~ret7|) .cse2)))) [2021-02-23 17:57:12,763 INFO L185 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (and (= sum_~n |sum_#in~n|) (= sum_~m |sum_#in~m|) (<= sum_~n 0)) [2021-02-23 17:57:12,763 INFO L185 CegarLoopUtils]: At program point L9-2(line 9) the Hoare annotation is: (and (let ((.cse0 (= sum_~n |sum_#in~n|))) (or (and .cse0 (<= |sum_#in~n| 9)) (and .cse0 (<= (+ |sum_#in~m| 10) |sum_#t~ret7|)))) (let ((.cse1 (= sum_~m |sum_#in~m|)) (.cse2 (<= |sum_#t~ret7| (+ |sum_#in~n| |sum_#in~m|)))) (or (and (<= |sum_#in~n| 5) .cse1 (<= (+ |sum_#in~m| 5) |sum_#t~ret7|) .cse2) (and .cse1 (<= |sum_#in~n| 7) (<= (+ |sum_#in~m| 7) |sum_#t~ret7|) .cse2) (and .cse1 (<= (+ |sum_#in~m| 9) |sum_#t~ret7|) .cse2) (and (<= (+ |sum_#in~m| 4) |sum_#t~ret7|) (<= |sum_#in~n| 4) .cse1 .cse2) (and .cse1 (<= |sum_#in~n| 8) (<= (+ |sum_#in~m| 8) |sum_#t~ret7|) .cse2) (and (<= (+ |sum_#in~m| 3) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 3) .cse2) (and (<= (+ |sum_#in~m| 1) |sum_#t~ret7|) .cse1 (<= |sum_#in~n| 1) .cse2) (and (<= |sum_#in~n| 2) .cse1 .cse2 (<= (+ |sum_#in~m| 2) |sum_#t~ret7|)) (and .cse1 (<= |sum_#in~n| 6) (<= (+ |sum_#in~m| 6) |sum_#t~ret7|) .cse2)))) [2021-02-23 17:57:12,763 INFO L185 CegarLoopUtils]: At program point L6(lines 6 10) the Hoare annotation is: (and (= sum_~n |sum_#in~n|) (= sum_~m |sum_#in~m|)) [2021-02-23 17:57:12,764 INFO L185 CegarLoopUtils]: At program point L9-3(line 9) the Hoare annotation is: (let ((.cse14 (+ |sum_#in~n| |sum_#in~m|))) (let ((.cse0 (= sum_~n |sum_#in~n|)) (.cse2 (= sum_~m |sum_#in~m|)) (.cse3 (<= |sum_#res| .cse14)) (.cse4 (<= |sum_#t~ret7| .cse14))) (or (let ((.cse1 (+ |sum_#in~m| 1))) (and .cse0 (<= .cse1 |sum_#t~ret7|) (<= .cse1 |sum_#res|) .cse2 (<= |sum_#in~n| 1) .cse3 .cse4)) (let ((.cse5 (+ |sum_#in~m| 7))) (and .cse0 .cse2 (<= .cse5 |sum_#res|) (<= |sum_#in~n| 7) .cse3 (<= .cse5 |sum_#t~ret7|) .cse4)) (let ((.cse6 (+ |sum_#in~m| 10))) (and .cse0 (<= .cse6 |sum_#res|) .cse2 .cse3 (<= .cse6 |sum_#t~ret7|) .cse4)) (let ((.cse7 (+ |sum_#in~m| 8))) (and .cse0 .cse2 (<= |sum_#in~n| 8) .cse3 (<= .cse7 |sum_#res|) (<= .cse7 |sum_#t~ret7|) .cse4)) (let ((.cse8 (+ |sum_#in~m| 4))) (and .cse0 (<= .cse8 |sum_#t~ret7|) (<= |sum_#in~n| 4) .cse2 .cse3 (<= .cse8 |sum_#res|) .cse4)) (let ((.cse9 (+ |sum_#in~m| 6))) (and .cse0 (<= .cse9 |sum_#res|) .cse2 .cse3 (<= |sum_#in~n| 6) (<= .cse9 |sum_#t~ret7|) .cse4)) (let ((.cse10 (+ |sum_#in~m| 5))) (and .cse0 (<= |sum_#in~n| 5) .cse2 .cse3 (<= .cse10 |sum_#t~ret7|) (<= .cse10 |sum_#res|) .cse4)) (let ((.cse11 (+ |sum_#in~m| 3))) (and .cse0 (<= .cse11 |sum_#t~ret7|) .cse2 (<= |sum_#in~n| 3) .cse3 (<= .cse11 |sum_#res|) .cse4)) (let ((.cse12 (+ |sum_#in~m| 2))) (and .cse0 (<= .cse12 |sum_#res|) (<= |sum_#in~n| 2) .cse2 .cse3 .cse4 (<= .cse12 |sum_#t~ret7|))) (let ((.cse13 (+ |sum_#in~m| 9))) (and .cse0 .cse2 .cse3 (<= .cse13 |sum_#res|) (<= .cse13 |sum_#t~ret7|) (<= |sum_#in~n| 9) .cse4))))) [2021-02-23 17:57:12,764 INFO L185 CegarLoopUtils]: At program point L5(lines 5 11) the Hoare annotation is: (= sum_~n |sum_#in~n|) [2021-02-23 17:57:12,764 INFO L185 CegarLoopUtils]: At program point sumFINAL(lines 5 11) the Hoare annotation is: (let ((.cse2 (+ |sum_#in~n| |sum_#in~m|))) (let ((.cse0 (= sum_~n |sum_#in~n|)) (.cse1 (= sum_~m |sum_#in~m|)) (.cse3 (<= |sum_#res| .cse2))) (or (and .cse0 (<= |sum_#res| |sum_#in~m|) .cse1 (<= .cse2 |sum_#res|)) (and .cse0 .cse1 (<= |sum_#in~n| 8) .cse3 (<= (+ |sum_#in~m| 8) |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 6) |sum_#res|) .cse1 .cse3 (<= |sum_#in~n| 6)) (and .cse0 .cse1 .cse3 (<= (+ |sum_#in~m| 9) |sum_#res|) (<= |sum_#in~n| 9)) (and .cse0 .cse1 (<= (+ |sum_#in~m| 7) |sum_#res|) (<= |sum_#in~n| 7) .cse3) (and .cse0 (<= (+ |sum_#in~m| 1) |sum_#res|) .cse1 (<= |sum_#in~n| 1) .cse3) (and .cse0 (<= (+ |sum_#in~m| 10) |sum_#res|) .cse1 .cse3) (and .cse0 .cse1 (<= |sum_#in~n| 3) .cse3 (<= (+ |sum_#in~m| 3) |sum_#res|)) (and .cse0 (<= (+ |sum_#in~m| 2) |sum_#res|) (<= |sum_#in~n| 2) .cse1 .cse3) (and .cse0 (<= |sum_#in~n| 4) .cse1 .cse3 (<= (+ |sum_#in~m| 4) |sum_#res|)) (and .cse0 (<= |sum_#in~n| 5) .cse1 .cse3 (<= (+ |sum_#in~m| 5) |sum_#res|))))) [2021-02-23 17:57:12,765 INFO L192 CegarLoopUtils]: At program point sumENTRY(lines 5 11) the Hoare annotation is: true [2021-02-23 17:57:12,765 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) the Hoare annotation is: false [2021-02-23 17:57:12,765 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 13 20) the Hoare annotation is: true [2021-02-23 17:57:12,765 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 13 20) the Hoare annotation is: (<= 10 main_~a~0) [2021-02-23 17:57:12,765 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: false [2021-02-23 17:57:12,765 INFO L185 CegarLoopUtils]: At program point L17(lines 17 19) the Hoare annotation is: (and (<= main_~a~0 10) (<= main_~a~0 main_~result~0) (<= 10 main_~a~0) (<= main_~result~0 main_~a~0) (= main_~b~0 0)) [2021-02-23 17:57:12,765 INFO L185 CegarLoopUtils]: At program point L18-1(line 18) the Hoare annotation is: false [2021-02-23 17:57:12,766 INFO L185 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: (and (<= main_~a~0 10) (<= 10 main_~a~0) (= main_~b~0 0)) [2021-02-23 17:57:12,766 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: (and (<= main_~a~0 10) (<= 10 main_~a~0)) [2021-02-23 17:57:12,766 INFO L185 CegarLoopUtils]: At program point L16-1(line 16) the Hoare annotation is: (and (<= main_~a~0 10) (<= |main_#t~ret8| main_~a~0) (<= 10 main_~a~0) (<= main_~a~0 |main_#t~ret8|) (= main_~b~0 0)) [2021-02-23 17:57:12,766 INFO L185 CegarLoopUtils]: At program point L17-2(lines 13 20) the Hoare annotation is: (<= 10 main_~a~0) [2021-02-23 17:57:12,766 INFO L185 CegarLoopUtils]: At program point L16-2(line 16) the Hoare annotation is: (and (<= main_~a~0 10) (<= |main_#t~ret8| main_~a~0) (<= 10 main_~a~0) (<= main_~a~0 |main_#t~ret8|) (= main_~b~0 0)) [2021-02-23 17:57:12,767 INFO L185 CegarLoopUtils]: At program point L16-3(line 16) the Hoare annotation is: (and (<= main_~a~0 10) (<= |main_#t~ret8| main_~a~0) (<= main_~a~0 main_~result~0) (<= 10 main_~a~0) (<= main_~a~0 |main_#t~ret8|) (<= main_~result~0 main_~a~0) (= main_~b~0 0)) [2021-02-23 17:57:12,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:57:12 BoogieIcfgContainer [2021-02-23 17:57:12,816 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 17:57:12,818 INFO L168 Benchmark]: Toolchain (without parser) took 18983.70 ms. Allocated memory was 153.1 MB in the beginning and 321.9 MB in the end (delta: 168.8 MB). Free memory was 129.6 MB in the beginning and 136.1 MB in the end (delta: -6.4 MB). Peak memory consumption was 188.0 MB. Max. memory is 8.0 GB. [2021-02-23 17:57:12,820 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 153.1 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:57:12,821 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.57 ms. Allocated memory is still 153.1 MB. Free memory was 128.4 MB in the beginning and 119.2 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 17:57:12,821 INFO L168 Benchmark]: Boogie Preprocessor took 55.23 ms. Allocated memory is still 153.1 MB. Free memory was 119.2 MB in the beginning and 117.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 17:57:12,821 INFO L168 Benchmark]: RCFGBuilder took 514.90 ms. Allocated memory is still 153.1 MB. Free memory was 117.9 MB in the beginning and 135.1 MB in the end (delta: -17.1 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2021-02-23 17:57:12,822 INFO L168 Benchmark]: TraceAbstraction took 18041.50 ms. Allocated memory was 153.1 MB in the beginning and 321.9 MB in the end (delta: 168.8 MB). Free memory was 134.5 MB in the beginning and 136.1 MB in the end (delta: -1.5 MB). Peak memory consumption was 192.2 MB. Max. memory is 8.0 GB. [2021-02-23 17:57:12,823 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 153.1 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 345.57 ms. Allocated memory is still 153.1 MB. Free memory was 128.4 MB in the beginning and 119.2 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 55.23 ms. Allocated memory is still 153.1 MB. Free memory was 119.2 MB in the beginning and 117.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 514.90 ms. Allocated memory is still 153.1 MB. Free memory was 117.9 MB in the beginning and 135.1 MB in the end (delta: -17.1 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18041.50 ms. Allocated memory was 153.1 MB in the beginning and 321.9 MB in the end (delta: 168.8 MB). Free memory was 134.5 MB in the beginning and 136.1 MB in the end (delta: -1.5 MB). Peak memory consumption was 192.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: 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 - ProcedureContractResult [Line: 5]: Procedure Contract for sum Derived contract for procedure sum: ((((((((((((n == \old(n) && \result <= \old(m)) && m == \old(m)) && \old(n) + \old(m) <= \result) || ((((n == \old(n) && m == \old(m)) && \old(n) <= 8) && \result <= \old(n) + \old(m)) && \old(m) + 8 <= \result)) || ((((n == \old(n) && \old(m) + 6 <= \result) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(n) <= 6)) || ((((n == \old(n) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(m) + 9 <= \result) && \old(n) <= 9)) || ((((n == \old(n) && m == \old(m)) && \old(m) + 7 <= \result) && \old(n) <= 7) && \result <= \old(n) + \old(m))) || ((((n == \old(n) && \old(m) + 1 <= \result) && m == \old(m)) && \old(n) <= 1) && \result <= \old(n) + \old(m))) || (((n == \old(n) && \old(m) + 10 <= \result) && m == \old(m)) && \result <= \old(n) + \old(m))) || ((((n == \old(n) && m == \old(m)) && \old(n) <= 3) && \result <= \old(n) + \old(m)) && \old(m) + 3 <= \result)) || ((((n == \old(n) && \old(m) + 2 <= \result) && \old(n) <= 2) && m == \old(m)) && \result <= \old(n) + \old(m))) || ((((n == \old(n) && \old(n) <= 4) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(m) + 4 <= \result)) || ((((n == \old(n) && \old(n) <= 5) && m == \old(m)) && \result <= \old(n) + \old(m)) && \old(m) + 5 <= \result) - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 10 <= a - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.1s, OverallIterations: 11, TraceHistogramMax: 11, AutomataDifference: 9.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 303 SDtfs, 736 SDslu, 773 SDs, 0 SdLazy, 1797 SolverSat, 216 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 404 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1227 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 36 LocationsWithAnnotation, 46 PreInvPairs, 196 NumberOfFragments, 1234 HoareAnnotationTreeSize, 46 FomulaSimplifications, 2945 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 36 FomulaSimplificationsInter, 4518 FormulaSimplificationTreeSizeReductionInter, 3.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...