/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/recursive/Ackermann01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:32:38,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:32:38,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:32:38,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:32:38,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:32:38,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:32:38,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:32:38,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:32:38,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:32:38,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:32:38,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:32:38,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:32:38,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:32:38,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:32:38,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:32:38,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:32:38,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 01:32:38,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:32:38,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:32:38,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:32:38,558 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:32:38,580 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:32:38,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:32:38,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:32:38,585 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:32:38,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:32:38,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:32:38,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:32:38,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:32:38,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:32:38,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:32:38,587 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:32:38,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:32:38,588 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:32:38,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:32:38,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:32:38,588 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:32:38,588 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:32:38,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:32:38,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:32:38,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:32:38,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:32:38,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:32:38,590 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:32:38,590 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:32:38,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:32:38,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:32:38,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:32:38,982 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:32:38,982 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:32:38,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann01-2.c [2021-02-22 01:32:39,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e75f796a1/c8dc7e0b6b0144da997e903010e73402/FLAG4bb06d6d3 [2021-02-22 01:32:39,758 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:32:39,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Ackermann01-2.c [2021-02-22 01:32:39,765 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e75f796a1/c8dc7e0b6b0144da997e903010e73402/FLAG4bb06d6d3 [2021-02-22 01:32:40,135 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e75f796a1/c8dc7e0b6b0144da997e903010e73402 [2021-02-22 01:32:40,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:32:40,152 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:32:40,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:32:40,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:32:40,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:32:40,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:32:40" (1/1) ... [2021-02-22 01:32:40,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@228c0490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:40, skipping insertion in model container [2021-02-22 01:32:40,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:32:40" (1/1) ... [2021-02-22 01:32:40,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:32:40,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:32:40,329 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/Ackermann01-2.c[1234,1247] [2021-02-22 01:32:40,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:32:40,342 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:32:40,360 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/Ackermann01-2.c[1234,1247] [2021-02-22 01:32:40,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:32:40,376 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:32:40,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:40 WrapperNode [2021-02-22 01:32:40,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:32:40,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:32:40,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:32:40,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:32:40,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:40" (1/1) ... [2021-02-22 01:32:40,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:40" (1/1) ... [2021-02-22 01:32:40,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:40" (1/1) ... [2021-02-22 01:32:40,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:40" (1/1) ... [2021-02-22 01:32:40,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:40" (1/1) ... [2021-02-22 01:32:40,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:40" (1/1) ... [2021-02-22 01:32:40,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:40" (1/1) ... [2021-02-22 01:32:40,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:32:40,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:32:40,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:32:40,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:32:40,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:40" (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 [2021-02-22 01:32:40,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:32:40,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:32:40,503 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:32:40,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2021-02-22 01:32:40,503 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:32:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:32:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:32:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:32:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:32:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 01:32:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2021-02-22 01:32:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:32:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:32:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:32:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:32:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:32:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:32:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:32:40,761 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:32:40,762 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-22 01:32:40,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:32:40 BoogieIcfgContainer [2021-02-22 01:32:40,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:32:40,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:32:40,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:32:40,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:32:40,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:32:40" (1/3) ... [2021-02-22 01:32:40,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43fd86f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:32:40, skipping insertion in model container [2021-02-22 01:32:40,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:40" (2/3) ... [2021-02-22 01:32:40,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43fd86f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:32:40, skipping insertion in model container [2021-02-22 01:32:40,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:32:40" (3/3) ... [2021-02-22 01:32:40,773 INFO L111 eAbstractionObserver]: Analyzing ICFG Ackermann01-2.c [2021-02-22 01:32:40,784 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:32:40,789 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:32:40,811 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:32:40,843 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:32:40,843 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:32:40,843 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:32:40,843 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:32:40,844 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:32:40,844 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:32:40,844 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:32:40,844 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:32:40,903 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2021-02-22 01:32:40,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-22 01:32:40,925 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:40,928 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, 1, 1, 1, 1, 1, 1] [2021-02-22 01:32:40,929 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:40,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:40,945 INFO L82 PathProgramCache]: Analyzing trace with hash 305373308, now seen corresponding path program 1 times [2021-02-22 01:32:40,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:40,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785910650] [2021-02-22 01:32:40,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:41,099 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:41,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:41,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:41,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:41,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:41,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:41,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:41,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:41,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:41,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:41,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:41,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:41,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:32:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:41,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:41,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:41,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-22 01:32:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:41,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:41,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:41,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:41,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:41,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:41,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:32:41,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:32:41,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785910650] [2021-02-22 01:32:41,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:32:41,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 01:32:41,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011778697] [2021-02-22 01:32:41,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 01:32:41,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:32:41,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 01:32:41,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-02-22 01:32:41,640 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 8 states. [2021-02-22 01:32:42,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:32:42,333 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2021-02-22 01:32:42,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-22 01:32:42,335 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2021-02-22 01:32:42,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:32:42,346 INFO L225 Difference]: With dead ends: 70 [2021-02-22 01:32:42,346 INFO L226 Difference]: Without dead ends: 47 [2021-02-22 01:32:42,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-02-22 01:32:42,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-02-22 01:32:42,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-02-22 01:32:42,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-02-22 01:32:42,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2021-02-22 01:32:42,407 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 32 [2021-02-22 01:32:42,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:32:42,408 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2021-02-22 01:32:42,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 01:32:42,408 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2021-02-22 01:32:42,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-22 01:32:42,412 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:42,412 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, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:32:42,412 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:32:42,413 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:42,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:42,414 INFO L82 PathProgramCache]: Analyzing trace with hash -40053035, now seen corresponding path program 1 times [2021-02-22 01:32:42,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:42,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169718963] [2021-02-22 01:32:42,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:42,418 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:42,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:42,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:42,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:42,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:42,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:42,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:42,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:42,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:42,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:32:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:42,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:42,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:42,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-22 01:32:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:42,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:42,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:42,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:42,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:42,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:42,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:42,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-22 01:32:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:42,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:42,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:42,563 WARN L141 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-02-22 01:32:42,564 WARN L147 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size 7 [2021-02-22 01:32:42,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:42,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-22 01:32:42,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-22 01:32:42,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169718963] [2021-02-22 01:32:42,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:32:42,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 01:32:42,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284451187] [2021-02-22 01:32:42,594 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 01:32:42,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:32:42,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 01:32:42,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:32:42,595 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 9 states. [2021-02-22 01:32:43,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:32:43,078 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2021-02-22 01:32:43,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-22 01:32:43,078 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2021-02-22 01:32:43,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:32:43,081 INFO L225 Difference]: With dead ends: 58 [2021-02-22 01:32:43,081 INFO L226 Difference]: Without dead ends: 52 [2021-02-22 01:32:43,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-02-22 01:32:43,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-22 01:32:43,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2021-02-22 01:32:43,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-02-22 01:32:43,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2021-02-22 01:32:43,102 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 42 [2021-02-22 01:32:43,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:32:43,102 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2021-02-22 01:32:43,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 01:32:43,103 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2021-02-22 01:32:43,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-22 01:32:43,105 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:43,105 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:32:43,106 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:32:43,106 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:43,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:43,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1732856645, now seen corresponding path program 1 times [2021-02-22 01:32:43,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:43,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082609580] [2021-02-22 01:32:43,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:43,110 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:43,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:43,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:43,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:43,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:43,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:32:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:43,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:43,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:43,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-22 01:32:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:43,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:43,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:43,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:43,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:32:43,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:43,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:43,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-22 01:32:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:43,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:43,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:43,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:43,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:43,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-02-22 01:32:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:43,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:43,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:43,233 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-02-22 01:32:43,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082609580] [2021-02-22 01:32:43,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:32:43,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 01:32:43,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396967404] [2021-02-22 01:32:43,235 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 01:32:43,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:32:43,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 01:32:43,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-22 01:32:43,236 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand 6 states. [2021-02-22 01:32:43,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:32:43,471 INFO L93 Difference]: Finished difference Result 81 states and 98 transitions. [2021-02-22 01:32:43,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 01:32:43,472 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2021-02-22 01:32:43,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:32:43,474 INFO L225 Difference]: With dead ends: 81 [2021-02-22 01:32:43,474 INFO L226 Difference]: Without dead ends: 52 [2021-02-22 01:32:43,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:32:43,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-22 01:32:43,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-02-22 01:32:43,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-02-22 01:32:43,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2021-02-22 01:32:43,494 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 51 [2021-02-22 01:32:43,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:32:43,494 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2021-02-22 01:32:43,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 01:32:43,495 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2021-02-22 01:32:43,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-02-22 01:32:43,497 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:43,498 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:32:43,498 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:32:43,498 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:43,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:43,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1101309652, now seen corresponding path program 1 times [2021-02-22 01:32:43,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:43,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721128158] [2021-02-22 01:32:43,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:43,502 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:43,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:43,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:43,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:43,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:43,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:43,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:43,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:43,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:43,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:32:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:43,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:43,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:43,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-22 01:32:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:43,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:43,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:43,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:43,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:43,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:43,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:43,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:43,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:43,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-22 01:32:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:43,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:43,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:43,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:43,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:43,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:43,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:43,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-22 01:32:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:43,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:43,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:43,757 WARN L141 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-02-22 01:32:43,757 WARN L147 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size 7 [2021-02-22 01:32:43,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:43,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-22 01:32:43,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-22 01:32:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:43,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:43,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:43,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:43,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:43,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:43,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:32:43,837 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-02-22 01:32:43,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721128158] [2021-02-22 01:32:43,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:32:43,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-22 01:32:43,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371739380] [2021-02-22 01:32:43,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-22 01:32:43,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:32:43,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-22 01:32:43,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-02-22 01:32:43,840 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 14 states. [2021-02-22 01:32:45,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:32:45,224 INFO L93 Difference]: Finished difference Result 97 states and 130 transitions. [2021-02-22 01:32:45,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-22 01:32:45,225 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 61 [2021-02-22 01:32:45,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:32:45,229 INFO L225 Difference]: With dead ends: 97 [2021-02-22 01:32:45,229 INFO L226 Difference]: Without dead ends: 91 [2021-02-22 01:32:45,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=234, Invalid=888, Unknown=0, NotChecked=0, Total=1122 [2021-02-22 01:32:45,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-02-22 01:32:45,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 65. [2021-02-22 01:32:45,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-02-22 01:32:45,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2021-02-22 01:32:45,260 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 61 [2021-02-22 01:32:45,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:32:45,260 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2021-02-22 01:32:45,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-22 01:32:45,261 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2021-02-22 01:32:45,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-02-22 01:32:45,263 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:45,264 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:32:45,264 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:32:45,264 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:45,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:45,265 INFO L82 PathProgramCache]: Analyzing trace with hash 752897773, now seen corresponding path program 2 times [2021-02-22 01:32:45,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:45,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758070800] [2021-02-22 01:32:45,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:45,267 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:45,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:45,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:45,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:45,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:45,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:32:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:45,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:45,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:45,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-22 01:32:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:45,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:45,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:45,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:45,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:45,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:45,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:45,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-22 01:32:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:45,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:45,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:45,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:45,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:45,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-22 01:32:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:45,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:45,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:45,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:45,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:45,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-22 01:32:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:45,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:45,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:45,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:45,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:45,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-22 01:32:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:45,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:45,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:45,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:45,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:45,438 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-02-22 01:32:45,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758070800] [2021-02-22 01:32:45,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:32:45,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 01:32:45,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491290835] [2021-02-22 01:32:45,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 01:32:45,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:32:45,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 01:32:45,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-22 01:32:45,440 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand 8 states. [2021-02-22 01:32:45,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:32:45,882 INFO L93 Difference]: Finished difference Result 133 states and 200 transitions. [2021-02-22 01:32:45,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-22 01:32:45,883 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2021-02-22 01:32:45,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:32:45,893 INFO L225 Difference]: With dead ends: 133 [2021-02-22 01:32:45,894 INFO L226 Difference]: Without dead ends: 89 [2021-02-22 01:32:45,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-02-22 01:32:45,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-02-22 01:32:45,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-02-22 01:32:45,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-02-22 01:32:45,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 118 transitions. [2021-02-22 01:32:45,952 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 118 transitions. Word has length 71 [2021-02-22 01:32:45,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:32:45,954 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 118 transitions. [2021-02-22 01:32:45,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 01:32:45,956 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 118 transitions. [2021-02-22 01:32:45,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-02-22 01:32:45,960 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:45,960 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:32:45,960 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 01:32:45,962 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:45,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:45,963 INFO L82 PathProgramCache]: Analyzing trace with hash 2141089131, now seen corresponding path program 3 times [2021-02-22 01:32:45,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:45,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180186303] [2021-02-22 01:32:45,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:45,965 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:46,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:46,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:46,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:46,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:46,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:46,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:46,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:46,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:46,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:32:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:46,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:46,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:46,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-22 01:32:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:46,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:46,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:46,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:46,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:46,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:46,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:46,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-22 01:32:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:46,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:46,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:46,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:46,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:46,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:46,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:46,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:46,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:46,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-22 01:32:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:46,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:46,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:46,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:46,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:46,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:46,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:46,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-22 01:32:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:46,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:46,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:46,218 WARN L141 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-02-22 01:32:46,219 WARN L147 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size 7 [2021-02-22 01:32:46,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:46,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-22 01:32:46,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-22 01:32:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:46,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:46,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:46,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:46,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:46,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:46,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:32:46,304 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-02-22 01:32:46,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180186303] [2021-02-22 01:32:46,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:32:46,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-22 01:32:46,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096105073] [2021-02-22 01:32:46,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-22 01:32:46,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:32:46,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-22 01:32:46,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-02-22 01:32:46,311 INFO L87 Difference]: Start difference. First operand 89 states and 118 transitions. Second operand 15 states. [2021-02-22 01:32:47,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:32:47,751 INFO L93 Difference]: Finished difference Result 165 states and 256 transitions. [2021-02-22 01:32:47,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-22 01:32:47,751 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 71 [2021-02-22 01:32:47,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:32:47,755 INFO L225 Difference]: With dead ends: 165 [2021-02-22 01:32:47,755 INFO L226 Difference]: Without dead ends: 159 [2021-02-22 01:32:47,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=267, Invalid=1065, Unknown=0, NotChecked=0, Total=1332 [2021-02-22 01:32:47,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-02-22 01:32:47,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 87. [2021-02-22 01:32:47,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-02-22 01:32:47,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 112 transitions. [2021-02-22 01:32:47,799 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 112 transitions. Word has length 71 [2021-02-22 01:32:47,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:32:47,800 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 112 transitions. [2021-02-22 01:32:47,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-22 01:32:47,801 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 112 transitions. [2021-02-22 01:32:47,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-02-22 01:32:47,803 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:47,804 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:32:47,804 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 01:32:47,804 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:47,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:47,805 INFO L82 PathProgramCache]: Analyzing trace with hash 565343092, now seen corresponding path program 4 times [2021-02-22 01:32:47,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:47,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116668412] [2021-02-22 01:32:47,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:47,808 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:47,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:47,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:47,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:47,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:47,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:32:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:47,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:47,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:47,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-22 01:32:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:47,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:47,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:47,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:47,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:47,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-22 01:32:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:47,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:47,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:47,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:47,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:47,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-22 01:32:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:47,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:47,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:47,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:47,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:47,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:47,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:47,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-22 01:32:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:47,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:47,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:47,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-22 01:32:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:47,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:47,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:47,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-22 01:32:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:47,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:47,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:47,944 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-02-22 01:32:47,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116668412] [2021-02-22 01:32:47,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:32:47,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-22 01:32:47,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797888179] [2021-02-22 01:32:47,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-22 01:32:47,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:32:47,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-22 01:32:47,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-22 01:32:47,947 INFO L87 Difference]: Start difference. First operand 87 states and 112 transitions. Second operand 5 states. [2021-02-22 01:32:48,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:32:48,120 INFO L93 Difference]: Finished difference Result 152 states and 226 transitions. [2021-02-22 01:32:48,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 01:32:48,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2021-02-22 01:32:48,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:32:48,122 INFO L225 Difference]: With dead ends: 152 [2021-02-22 01:32:48,123 INFO L226 Difference]: Without dead ends: 86 [2021-02-22 01:32:48,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-02-22 01:32:48,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-02-22 01:32:48,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-02-22 01:32:48,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-02-22 01:32:48,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 112 transitions. [2021-02-22 01:32:48,173 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 112 transitions. Word has length 81 [2021-02-22 01:32:48,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:32:48,174 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 112 transitions. [2021-02-22 01:32:48,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-22 01:32:48,174 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 112 transitions. [2021-02-22 01:32:48,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-02-22 01:32:48,175 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:48,176 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2021-02-22 01:32:48,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-22 01:32:48,176 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:48,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:48,177 INFO L82 PathProgramCache]: Analyzing trace with hash 703900207, now seen corresponding path program 5 times [2021-02-22 01:32:48,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:48,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216412235] [2021-02-22 01:32:48,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:48,179 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:48,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:48,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:48,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:48,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:48,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:48,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:48,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:48,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:48,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:32:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:48,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:48,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:48,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-22 01:32:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:48,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:48,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:48,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:48,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:48,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:48,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:48,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-22 01:32:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:48,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:48,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:48,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:48,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:48,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:48,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:48,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-22 01:32:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:48,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:48,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:48,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:48,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:48,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:48,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:48,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:48,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:48,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-22 01:32:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:48,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:48,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:48,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:48,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:48,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:48,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:48,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-22 01:32:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:48,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:48,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:48,402 WARN L141 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-02-22 01:32:48,403 WARN L147 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size 7 [2021-02-22 01:32:48,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:48,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-22 01:32:48,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-02-22 01:32:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:48,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:48,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:48,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:48,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:48,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:48,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:32:48,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-02-22 01:32:48,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:48,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:48,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:48,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:48,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:48,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:48,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:48,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-22 01:32:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:48,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:48,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:48,524 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 18 proven. 13 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-02-22 01:32:48,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216412235] [2021-02-22 01:32:48,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:32:48,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-22 01:32:48,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873436471] [2021-02-22 01:32:48,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-22 01:32:48,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:32:48,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-22 01:32:48,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-02-22 01:32:48,527 INFO L87 Difference]: Start difference. First operand 86 states and 112 transitions. Second operand 17 states. [2021-02-22 01:32:50,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:32:50,212 INFO L93 Difference]: Finished difference Result 154 states and 243 transitions. [2021-02-22 01:32:50,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-02-22 01:32:50,214 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 100 [2021-02-22 01:32:50,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:32:50,216 INFO L225 Difference]: With dead ends: 154 [2021-02-22 01:32:50,216 INFO L226 Difference]: Without dead ends: 0 [2021-02-22 01:32:50,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=397, Invalid=1409, Unknown=0, NotChecked=0, Total=1806 [2021-02-22 01:32:50,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-22 01:32:50,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-22 01:32:50,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-22 01:32:50,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-22 01:32:50,220 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 100 [2021-02-22 01:32:50,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:32:50,220 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-22 01:32:50,220 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-22 01:32:50,220 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-22 01:32:50,220 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-22 01:32:50,221 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-22 01:32:50,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-22 01:32:53,658 WARN L202 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 25 [2021-02-22 01:32:53,853 WARN L202 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 25 [2021-02-22 01:32:54,099 WARN L202 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 27 [2021-02-22 01:32:54,358 WARN L202 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 27 [2021-02-22 01:32:54,515 WARN L202 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 23 [2021-02-22 01:32:54,643 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 21 [2021-02-22 01:32:54,964 WARN L202 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 29 [2021-02-22 01:32:55,478 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 19 [2021-02-22 01:32:55,619 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 19 [2021-02-22 01:32:55,791 WARN L202 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 23 [2021-02-22 01:32:56,146 WARN L202 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 29 [2021-02-22 01:32:56,151 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-22 01:32:56,151 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-22 01:32:56,151 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-22 01:32:56,151 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-22 01:32:56,151 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-22 01:32:56,152 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 01:32:56,152 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-22 01:32:56,152 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-22 01:32:56,152 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-22 01:32:56,152 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|)) [2021-02-22 01:32:56,152 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-22 01:32:56,153 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-22 01:32:56,153 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-22 01:32:56,153 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-22 01:32:56,153 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 01:32:56,153 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-22 01:32:56,154 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-22 01:32:56,154 INFO L192 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: true [2021-02-22 01:32:56,154 INFO L192 CegarLoopUtils]: At program point L35-2(line 35) the Hoare annotation is: true [2021-02-22 01:32:56,154 INFO L192 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: true [2021-02-22 01:32:56,154 INFO L192 CegarLoopUtils]: At program point L29-1(line 29) the Hoare annotation is: true [2021-02-22 01:32:56,154 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 28 48) the Hoare annotation is: true [2021-02-22 01:32:56,154 INFO L185 CegarLoopUtils]: At program point L46(line 46) the Hoare annotation is: false [2021-02-22 01:32:56,155 INFO L185 CegarLoopUtils]: At program point L46-1(line 46) the Hoare annotation is: false [2021-02-22 01:32:56,155 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 28 48) the Hoare annotation is: true [2021-02-22 01:32:56,155 INFO L185 CegarLoopUtils]: At program point L44(line 44) the Hoare annotation is: (<= 0 main_~n~0) [2021-02-22 01:32:56,155 INFO L185 CegarLoopUtils]: At program point L42(line 42) the Hoare annotation is: (<= 0 main_~n~0) [2021-02-22 01:32:56,155 INFO L185 CegarLoopUtils]: At program point L42-1(line 42) the Hoare annotation is: (and (<= 0 main_~n~0) (<= 1 |main_#t~ret12|)) [2021-02-22 01:32:56,155 INFO L192 CegarLoopUtils]: At program point L40(line 40) the Hoare annotation is: true [2021-02-22 01:32:56,155 INFO L185 CegarLoopUtils]: At program point L42-2(line 42) the Hoare annotation is: (and (<= 0 main_~n~0) (<= 1 |main_#t~ret12|)) [2021-02-22 01:32:56,156 INFO L185 CegarLoopUtils]: At program point L42-3(line 42) the Hoare annotation is: (and (<= 0 main_~n~0) (<= 1 |main_#t~ret12|) (<= 1 main_~result~0)) [2021-02-22 01:32:56,156 INFO L192 CegarLoopUtils]: At program point L36(lines 36 41) the Hoare annotation is: true [2021-02-22 01:32:56,156 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 46) the Hoare annotation is: false [2021-02-22 01:32:56,156 INFO L192 CegarLoopUtils]: At program point L30(lines 30 34) the Hoare annotation is: true [2021-02-22 01:32:56,156 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 28 48) the Hoare annotation is: true [2021-02-22 01:32:56,156 INFO L185 CegarLoopUtils]: At program point L43(lines 43 47) the Hoare annotation is: (and (<= 0 main_~n~0) (<= 1 main_~result~0)) [2021-02-22 01:32:56,156 INFO L192 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: true [2021-02-22 01:32:56,157 INFO L192 CegarLoopUtils]: At program point L35-1(line 35) the Hoare annotation is: true [2021-02-22 01:32:56,157 INFO L185 CegarLoopUtils]: At program point ackermannEXIT(lines 17 25) the Hoare annotation is: (let ((.cse5 (<= (+ |ackermann_#in~n| 1) |ackermann_#res|)) (.cse3 (= |ackermann_#in~m| 0))) (and (let ((.cse0 (<= 2 |ackermann_#res|)) (.cse4 (= ackermann_~n |ackermann_#in~n|))) (let ((.cse1 (or (and .cse0 .cse4) (and .cse5 .cse4))) (.cse2 (= ackermann_~m |ackermann_#in~m|))) (or (and .cse0 (<= |ackermann_#in~m| 1) .cse1 (= |ackermann_#in~n| 0) .cse2) (and .cse1 .cse2 .cse3) (and (<= 3 |ackermann_#res|) .cse4 .cse2)))) (or (and .cse5 .cse3) (<= 1 |ackermann_#in~m|)))) [2021-02-22 01:32:56,157 INFO L185 CegarLoopUtils]: At program point L24(line 24) the Hoare annotation is: (and (not (= ackermann_~m 0)) (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|)) [2021-02-22 01:32:56,157 INFO L185 CegarLoopUtils]: At program point L24-1(line 24) the Hoare annotation is: (let ((.cse0 (<= 3 |ackermann_#t~ret8|))) (and (or (= |ackermann_#in~n| 1) (and (<= 2 |ackermann_#res|) (<= (+ |ackermann_#in~n| 1) |ackermann_#res|)) .cse0) (let ((.cse1 (= ackermann_~n |ackermann_#in~n|)) (.cse2 (<= 1 |ackermann_#in~m|)) (.cse3 (= ackermann_~m |ackermann_#in~m|))) (or (and .cse0 .cse1 .cse2 .cse3) (and (<= |ackermann_#in~m| 1) (<= 2 |ackermann_#t~ret8|) .cse1 .cse2 .cse3))))) [2021-02-22 01:32:56,157 INFO L185 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: (and (= |ackermann_#in~n| 0) (not (= ackermann_~m 0)) (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|)) [2021-02-22 01:32:56,158 INFO L185 CegarLoopUtils]: At program point L24-2(line 24) the Hoare annotation is: (let ((.cse0 (<= 3 |ackermann_#t~ret8|))) (and (or (= |ackermann_#in~n| 1) (and (<= 2 |ackermann_#res|) (<= (+ |ackermann_#in~n| 1) |ackermann_#res|)) .cse0) (let ((.cse1 (= ackermann_~n |ackermann_#in~n|)) (.cse2 (<= 1 |ackermann_#in~m|)) (.cse3 (= ackermann_~m |ackermann_#in~m|))) (or (and .cse0 .cse1 .cse2 .cse3) (and (<= |ackermann_#in~m| 1) (<= 2 |ackermann_#t~ret8|) .cse1 .cse2 .cse3))))) [2021-02-22 01:32:56,158 INFO L192 CegarLoopUtils]: At program point ackermannENTRY(lines 17 25) the Hoare annotation is: true [2021-02-22 01:32:56,158 INFO L185 CegarLoopUtils]: At program point L21(lines 21 23) the Hoare annotation is: (and (not (= ackermann_~m 0)) (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|)) [2021-02-22 01:32:56,158 INFO L185 CegarLoopUtils]: At program point L22-1(line 22) the Hoare annotation is: (let ((.cse0 (= |ackermann_#in~n| 0)) (.cse1 (= ackermann_~n |ackermann_#in~n|)) (.cse2 (<= 1 |ackermann_#in~m|)) (.cse3 (= ackermann_~m |ackermann_#in~m|))) (or (and (<= |ackermann_#in~m| 1) .cse0 .cse1 (<= 2 |ackermann_#t~ret7|) .cse2 .cse3) (and .cse0 .cse1 .cse2 .cse3 (<= 3 |ackermann_#t~ret7|)))) [2021-02-22 01:32:56,158 INFO L185 CegarLoopUtils]: At program point L24-3(line 24) the Hoare annotation is: (let ((.cse0 (<= 3 |ackermann_#t~ret8|))) (and (or (= |ackermann_#in~n| 1) (and (<= 2 |ackermann_#res|) (<= (+ |ackermann_#in~n| 1) |ackermann_#res|)) .cse0) (let ((.cse1 (<= 3 |ackermann_#t~ret9|)) (.cse2 (= ackermann_~n |ackermann_#in~n|)) (.cse3 (<= 1 |ackermann_#in~m|)) (.cse4 (= ackermann_~m |ackermann_#in~m|))) (or (and (<= |ackermann_#in~m| 1) (<= 2 |ackermann_#t~ret8|) .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4))))) [2021-02-22 01:32:56,158 INFO L185 CegarLoopUtils]: At program point L22-2(line 22) the Hoare annotation is: (let ((.cse0 (= |ackermann_#in~n| 0)) (.cse1 (= ackermann_~n |ackermann_#in~n|)) (.cse2 (<= 1 |ackermann_#in~m|)) (.cse3 (= ackermann_~m |ackermann_#in~m|))) (or (and (<= |ackermann_#in~m| 1) .cse0 .cse1 (<= 2 |ackermann_#t~ret7|) .cse2 .cse3) (and .cse0 .cse1 .cse2 .cse3 (<= 3 |ackermann_#t~ret7|)))) [2021-02-22 01:32:56,159 INFO L185 CegarLoopUtils]: At program point L24-4(line 24) the Hoare annotation is: (let ((.cse0 (<= 3 |ackermann_#t~ret8|))) (and (or (= |ackermann_#in~n| 1) (and (<= 2 |ackermann_#res|) (<= (+ |ackermann_#in~n| 1) |ackermann_#res|)) .cse0) (let ((.cse1 (<= 1 |ackermann_#in~m|))) (or (and (<= |ackermann_#in~m| 1) (<= 2 |ackermann_#t~ret8|) .cse1) (and .cse0 .cse1))) (<= 3 |ackermann_#t~ret9|) (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|))) [2021-02-22 01:32:56,159 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (and (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|) (= |ackermann_#in~m| 0)) [2021-02-22 01:32:56,159 INFO L185 CegarLoopUtils]: At program point L22-3(line 22) the Hoare annotation is: (and (<= 1 |ackermann_#in~m|) (= ackermann_~m |ackermann_#in~m|) (let ((.cse0 (= |ackermann_#in~n| 0)) (.cse1 (= ackermann_~n |ackermann_#in~n|))) (or (and (<= 2 |ackermann_#res|) (<= |ackermann_#in~m| 1) .cse0 .cse1 (<= 2 |ackermann_#t~ret7|)) (and .cse0 (<= 3 |ackermann_#res|) .cse1 (<= 3 |ackermann_#t~ret7|))))) [2021-02-22 01:32:56,159 INFO L185 CegarLoopUtils]: At program point L24-5(line 24) the Hoare annotation is: (and (let ((.cse0 (<= 1 |ackermann_#in~m|))) (or (and (<= |ackermann_#in~m| 1) (<= 2 |ackermann_#t~ret8|) .cse0) (and (<= 3 |ackermann_#t~ret8|) .cse0))) (<= 3 |ackermann_#t~ret9|) (<= 3 |ackermann_#res|) (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|)) [2021-02-22 01:32:56,159 INFO L185 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (and (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|)) [2021-02-22 01:32:56,159 INFO L185 CegarLoopUtils]: At program point L24-6(line 24) the Hoare annotation is: (and (let ((.cse0 (<= 1 |ackermann_#in~m|))) (or (and (<= |ackermann_#in~m| 1) (<= 2 |ackermann_#t~ret8|) .cse0) (and (<= 3 |ackermann_#t~ret8|) .cse0))) (<= 3 |ackermann_#res|) (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|)) [2021-02-22 01:32:56,160 INFO L185 CegarLoopUtils]: At program point L17(lines 17 25) the Hoare annotation is: (= ackermann_~m |ackermann_#in~m|) [2021-02-22 01:32:56,160 INFO L185 CegarLoopUtils]: At program point ackermannFINAL(lines 17 25) the Hoare annotation is: (let ((.cse5 (<= (+ |ackermann_#in~n| 1) |ackermann_#res|)) (.cse3 (= |ackermann_#in~m| 0))) (and (let ((.cse0 (<= 2 |ackermann_#res|)) (.cse4 (= ackermann_~n |ackermann_#in~n|))) (let ((.cse1 (or (and .cse0 .cse4) (and .cse5 .cse4))) (.cse2 (= ackermann_~m |ackermann_#in~m|))) (or (and .cse0 (<= |ackermann_#in~m| 1) .cse1 (= |ackermann_#in~n| 0) .cse2) (and .cse1 .cse2 .cse3) (and (<= 3 |ackermann_#res|) .cse4 .cse2)))) (or (and .cse5 .cse3) (<= 1 |ackermann_#in~m|)))) [2021-02-22 01:32:56,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:32:56 BoogieIcfgContainer [2021-02-22 01:32:56,178 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:32:56,179 INFO L168 Benchmark]: Toolchain (without parser) took 16038.95 ms. Allocated memory was 151.0 MB in the beginning and 331.4 MB in the end (delta: 180.4 MB). Free memory was 127.8 MB in the beginning and 170.6 MB in the end (delta: -42.8 MB). Peak memory consumption was 198.2 MB. Max. memory is 8.0 GB. [2021-02-22 01:32:56,179 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 125.0 MB in the end (delta: 99.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:32:56,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.86 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 117.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:32:56,179 INFO L168 Benchmark]: Boogie Preprocessor took 32.10 ms. Allocated memory is still 151.0 MB. Free memory was 117.3 MB in the beginning and 116.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:32:56,180 INFO L168 Benchmark]: RCFGBuilder took 352.45 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 99.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-22 01:32:56,180 INFO L168 Benchmark]: TraceAbstraction took 15412.46 ms. Allocated memory was 151.0 MB in the beginning and 331.4 MB in the end (delta: 180.4 MB). Free memory was 99.3 MB in the beginning and 170.6 MB in the end (delta: -71.3 MB). Peak memory consumption was 169.9 MB. Max. memory is 8.0 GB. [2021-02-22 01:32:56,181 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 125.0 MB in the end (delta: 99.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 223.86 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 117.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.10 ms. Allocated memory is still 151.0 MB. Free memory was 117.3 MB in the beginning and 116.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 352.45 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 99.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 15412.46 ms. Allocated memory was 151.0 MB in the beginning and 331.4 MB in the end (delta: 180.4 MB). Free memory was 99.3 MB in the beginning and 170.6 MB in the end (delta: -71.3 MB). Peak memory consumption was 169.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: 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: 17]: Procedure Contract for ackermann Derived contract for procedure ackermann: ((((((2 <= \result && \old(m) <= 1) && ((2 <= \result && n == \old(n)) || (\old(n) + 1 <= \result && n == \old(n)))) && \old(n) == 0) && m == \old(m)) || ((((2 <= \result && n == \old(n)) || (\old(n) + 1 <= \result && n == \old(n))) && m == \old(m)) && \old(m) == 0)) || ((3 <= \result && n == \old(n)) && m == \old(m))) && ((\old(n) + 1 <= \result && \old(m) == 0) || 1 <= \old(m)) - ProcedureContractResult [Line: 28]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.3s, OverallIterations: 8, TraceHistogramMax: 8, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 352 SDtfs, 639 SDslu, 608 SDs, 0 SdLazy, 2408 SolverSat, 375 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 270 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 100 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 53 LocationsWithAnnotation, 575 PreInvPairs, 1034 NumberOfFragments, 670 HoareAnnotationTreeSize, 575 FomulaSimplifications, 187846 FormulaSimplificationTreeSizeReduction, 3.1s HoareSimplificationTime, 53 FomulaSimplificationsInter, 6716 FormulaSimplificationTreeSizeReductionInter, 2.7s 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...