/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/Fibonacci01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:56:56,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:56:56,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:56:56,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 03:56:56,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:56:56,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:56:56,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:56:56,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:56:56,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:56:56,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:56:56,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:56:56,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:56:56,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:56:56,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:56:56,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:56:56,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:56:56,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 03:56:56,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:56:56,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:56:56,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:56:56,784 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 03:56:56,811 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:56:56,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:56:56,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:56:56,817 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:56:56,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:56:56,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:56:56,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:56:56,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:56:56,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:56:56,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:56:56,819 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:56:56,820 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:56:56,820 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:56:56,820 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:56:56,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:56:56,821 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:56:56,821 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:56:56,821 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:56:56,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:56:56,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:56:56,822 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:56:56,822 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:56:56,822 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:56:56,838 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:56:57,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:56:57,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:56:57,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:56:57,318 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:56:57,319 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:56:57,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci01-1.c [2021-02-24 03:56:57,416 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/707414b80/571a1a5ac9a14d0fb1f002f62e7aaf9b/FLAG63dfbb2c8 [2021-02-24 03:56:58,112 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:56:58,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Fibonacci01-1.c [2021-02-24 03:56:58,123 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/707414b80/571a1a5ac9a14d0fb1f002f62e7aaf9b/FLAG63dfbb2c8 [2021-02-24 03:56:58,457 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/707414b80/571a1a5ac9a14d0fb1f002f62e7aaf9b [2021-02-24 03:56:58,461 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:56:58,474 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:56:58,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:56:58,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:56:58,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:56:58,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:56:58" (1/1) ... [2021-02-24 03:56:58,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65a9b189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:58, skipping insertion in model container [2021-02-24 03:56:58,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:56:58" (1/1) ... [2021-02-24 03:56:58,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:56:58,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:56:58,670 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/Fibonacci01-1.c[804,817] [2021-02-24 03:56:58,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:56:58,686 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:56:58,706 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/Fibonacci01-1.c[804,817] [2021-02-24 03:56:58,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:56:58,725 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:56:58,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:58 WrapperNode [2021-02-24 03:56:58,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:56:58,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:56:58,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:56:58,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:56:58,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:58" (1/1) ... [2021-02-24 03:56:58,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:58" (1/1) ... [2021-02-24 03:56:58,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:58" (1/1) ... [2021-02-24 03:56:58,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:58" (1/1) ... [2021-02-24 03:56:58,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:58" (1/1) ... [2021-02-24 03:56:58,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:58" (1/1) ... [2021-02-24 03:56:58,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:58" (1/1) ... [2021-02-24 03:56:58,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:56:58,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:56:58,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:56:58,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:56:58,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:58" (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 [2021-02-24 03:56:58,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:56:58,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:56:58,877 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:56:58,877 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2021-02-24 03:56:58,877 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:56:58,877 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:56:58,878 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:56:58,878 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:56:58,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:56:58,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 03:56:58,878 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2021-02-24 03:56:58,879 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:56:58,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:56:58,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:56:58,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:56:58,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:56:58,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:56:58,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:56:59,233 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:56:59,233 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-24 03:56:59,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:56:59 BoogieIcfgContainer [2021-02-24 03:56:59,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:56:59,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:56:59,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:56:59,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:56:59,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:56:58" (1/3) ... [2021-02-24 03:56:59,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df8665f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:56:59, skipping insertion in model container [2021-02-24 03:56:59,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:58" (2/3) ... [2021-02-24 03:56:59,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df8665f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:56:59, skipping insertion in model container [2021-02-24 03:56:59,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:56:59" (3/3) ... [2021-02-24 03:56:59,269 INFO L111 eAbstractionObserver]: Analyzing ICFG Fibonacci01-1.c [2021-02-24 03:56:59,287 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:56:59,310 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:56:59,347 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:56:59,379 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:56:59,379 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:56:59,379 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:56:59,380 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:56:59,380 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:56:59,380 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:56:59,380 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:56:59,380 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:56:59,400 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2021-02-24 03:56:59,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-24 03:56:59,412 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:56:59,413 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] [2021-02-24 03:56:59,414 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:56:59,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:56:59,422 INFO L82 PathProgramCache]: Analyzing trace with hash 754086871, now seen corresponding path program 1 times [2021-02-24 03:56:59,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:56:59,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838307133] [2021-02-24 03:56:59,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:56:59,528 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:56:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:59,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:59,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:59,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:59,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:56:59,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:59,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:56:59,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:59,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:59,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:56:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:00,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:00,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:00,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-24 03:57:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:00,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:00,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:00,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:00,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:00,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:00,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 03:57:00,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:57:00,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838307133] [2021-02-24 03:57:00,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:57:00,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-24 03:57:00,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056746143] [2021-02-24 03:57:00,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 03:57:00,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:57:00,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 03:57:00,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-24 03:57:00,161 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 8 states. [2021-02-24 03:57:00,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:57:00,817 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2021-02-24 03:57:00,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 03:57:00,820 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2021-02-24 03:57:00,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:57:00,830 INFO L225 Difference]: With dead ends: 59 [2021-02-24 03:57:00,831 INFO L226 Difference]: Without dead ends: 39 [2021-02-24 03:57:00,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-02-24 03:57:00,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-02-24 03:57:00,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-02-24 03:57:00,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-02-24 03:57:00,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2021-02-24 03:57:00,894 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 27 [2021-02-24 03:57:00,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:57:00,895 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-02-24 03:57:00,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 03:57:00,895 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2021-02-24 03:57:00,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-24 03:57:00,897 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:57:00,898 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] [2021-02-24 03:57:00,898 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:57:00,898 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:57:00,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:57:00,899 INFO L82 PathProgramCache]: Analyzing trace with hash -213937358, now seen corresponding path program 1 times [2021-02-24 03:57:00,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:57:00,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906880423] [2021-02-24 03:57:00,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:57:00,903 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:57:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:00,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:00,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:00,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:00,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:57:00,959 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-24 03:57:00,959 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-24 03:57:00,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:00,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:00,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:57:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:01,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:01,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:01,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-24 03:57:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:01,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:01,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:01,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:01,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:01,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:01,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 03:57:01,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:57:01,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906880423] [2021-02-24 03:57:01,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:57:01,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-24 03:57:01,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599839371] [2021-02-24 03:57:01,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 03:57:01,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:57:01,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 03:57:01,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-24 03:57:01,064 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 8 states. [2021-02-24 03:57:01,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:57:01,402 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2021-02-24 03:57:01,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 03:57:01,402 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2021-02-24 03:57:01,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:57:01,404 INFO L225 Difference]: With dead ends: 47 [2021-02-24 03:57:01,405 INFO L226 Difference]: Without dead ends: 41 [2021-02-24 03:57:01,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-02-24 03:57:01,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-02-24 03:57:01,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-02-24 03:57:01,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-02-24 03:57:01,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2021-02-24 03:57:01,421 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 28 [2021-02-24 03:57:01,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:57:01,422 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-02-24 03:57:01,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 03:57:01,422 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2021-02-24 03:57:01,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-24 03:57:01,424 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:57:01,424 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-24 03:57:01,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:57:01,425 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:57:01,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:57:01,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1480948785, now seen corresponding path program 1 times [2021-02-24 03:57:01,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:57:01,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60614007] [2021-02-24 03:57:01,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:57:01,429 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:57:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:01,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:01,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:01,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:01,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:01,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:57:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:01,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:01,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:01,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-24 03:57:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:01,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:01,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:01,576 WARN L141 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size [2021-02-24 03:57:01,577 WARN L147 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size 3 [2021-02-24 03:57:01,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:01,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:57:01,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:01,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:01,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:01,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:01,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:57:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:01,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:01,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:01,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:01,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:01,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-02-24 03:57:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:01,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:01,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:01,643 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-24 03:57:01,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60614007] [2021-02-24 03:57:01,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:57:01,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-24 03:57:01,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671736871] [2021-02-24 03:57:01,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 03:57:01,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:57:01,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 03:57:01,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-24 03:57:01,646 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 7 states. [2021-02-24 03:57:01,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:57:01,939 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2021-02-24 03:57:01,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 03:57:01,940 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2021-02-24 03:57:01,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:57:01,942 INFO L225 Difference]: With dead ends: 63 [2021-02-24 03:57:01,942 INFO L226 Difference]: Without dead ends: 41 [2021-02-24 03:57:01,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-02-24 03:57:01,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-02-24 03:57:01,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-02-24 03:57:01,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-02-24 03:57:01,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2021-02-24 03:57:01,960 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 44 [2021-02-24 03:57:01,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:57:01,960 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2021-02-24 03:57:01,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 03:57:01,961 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2021-02-24 03:57:01,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-24 03:57:01,962 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:57:01,963 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-02-24 03:57:01,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 03:57:01,963 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:57:01,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:57:01,964 INFO L82 PathProgramCache]: Analyzing trace with hash -189469004, now seen corresponding path program 1 times [2021-02-24 03:57:01,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:57:01,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011534362] [2021-02-24 03:57:01,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:57:01,968 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:57:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:02,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:02,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:02,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:02,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:57:02,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:02,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:57:02,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:02,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:02,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:57:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:02,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:02,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:02,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-24 03:57:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:02,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:02,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:02,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:02,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 03:57:02,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:02,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-24 03:57:02,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:02,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:57:02,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:57:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:02,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:02,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:02,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:02,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:02,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:02,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:02,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 03:57:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:02,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:02,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:02,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:02,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:02,201 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-02-24 03:57:02,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011534362] [2021-02-24 03:57:02,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:57:02,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-24 03:57:02,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925061448] [2021-02-24 03:57:02,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-24 03:57:02,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:57:02,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-24 03:57:02,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-02-24 03:57:02,204 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 12 states. [2021-02-24 03:57:02,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:57:02,908 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2021-02-24 03:57:02,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-24 03:57:02,909 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2021-02-24 03:57:02,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:57:02,912 INFO L225 Difference]: With dead ends: 58 [2021-02-24 03:57:02,912 INFO L226 Difference]: Without dead ends: 52 [2021-02-24 03:57:02,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2021-02-24 03:57:02,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-24 03:57:02,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2021-02-24 03:57:02,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-02-24 03:57:02,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2021-02-24 03:57:02,929 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 45 [2021-02-24 03:57:02,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:57:02,930 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2021-02-24 03:57:02,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-24 03:57:02,930 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2021-02-24 03:57:02,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-02-24 03:57:02,932 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:57:02,933 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-02-24 03:57:02,933 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 03:57:02,933 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:57:02,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:57:02,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1181749608, now seen corresponding path program 1 times [2021-02-24 03:57:02,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:57:02,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187517194] [2021-02-24 03:57:02,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:57:02,937 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:57:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:02,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:02,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:02,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:02,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:02,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:57:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:03,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:03,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:03,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-24 03:57:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:03,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:03,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:03,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:03,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:03,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:03,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:03,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:57:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:03,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:03,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:03,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:03,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:03,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 03:57:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:03,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:03,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:03,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:03,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:57:03,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:03,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:03,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:57:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:03,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:03,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:03,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 03:57:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:03,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:03,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:03,118 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-02-24 03:57:03,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187517194] [2021-02-24 03:57:03,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:57:03,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-24 03:57:03,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180592859] [2021-02-24 03:57:03,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 03:57:03,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:57:03,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 03:57:03,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-02-24 03:57:03,121 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 8 states. [2021-02-24 03:57:03,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:57:03,523 INFO L93 Difference]: Finished difference Result 84 states and 108 transitions. [2021-02-24 03:57:03,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 03:57:03,524 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 64 [2021-02-24 03:57:03,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:57:03,525 INFO L225 Difference]: With dead ends: 84 [2021-02-24 03:57:03,525 INFO L226 Difference]: Without dead ends: 51 [2021-02-24 03:57:03,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-02-24 03:57:03,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-02-24 03:57:03,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-02-24 03:57:03,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-02-24 03:57:03,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2021-02-24 03:57:03,543 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 64 [2021-02-24 03:57:03,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:57:03,543 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2021-02-24 03:57:03,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 03:57:03,544 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2021-02-24 03:57:03,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-24 03:57:03,545 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:57:03,546 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 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] [2021-02-24 03:57:03,546 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 03:57:03,546 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:57:03,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:57:03,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1062763502, now seen corresponding path program 2 times [2021-02-24 03:57:03,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:57:03,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998300723] [2021-02-24 03:57:03,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:57:03,555 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:57:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:03,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:03,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:03,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:03,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:03,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:57:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:03,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:03,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:03,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-24 03:57:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:03,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:03,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:03,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:03,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:03,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:03,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:03,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:57:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:03,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:03,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:03,676 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-24 03:57:03,676 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-24 03:57:03,686 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-24 03:57:03,687 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-24 03:57:03,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:03,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:03,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:57:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:03,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:03,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:03,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 03:57:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:03,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:03,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:03,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 03:57:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:03,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:03,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:03,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:03,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:03,763 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-02-24 03:57:03,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998300723] [2021-02-24 03:57:03,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:57:03,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 03:57:03,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002157880] [2021-02-24 03:57:03,765 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 03:57:03,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:57:03,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 03:57:03,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-02-24 03:57:03,766 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 9 states. [2021-02-24 03:57:04,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:57:04,195 INFO L93 Difference]: Finished difference Result 85 states and 99 transitions. [2021-02-24 03:57:04,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-24 03:57:04,195 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2021-02-24 03:57:04,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:57:04,197 INFO L225 Difference]: With dead ends: 85 [2021-02-24 03:57:04,197 INFO L226 Difference]: Without dead ends: 51 [2021-02-24 03:57:04,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-02-24 03:57:04,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-02-24 03:57:04,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-02-24 03:57:04,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-02-24 03:57:04,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2021-02-24 03:57:04,214 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 62 [2021-02-24 03:57:04,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:57:04,215 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2021-02-24 03:57:04,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 03:57:04,215 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2021-02-24 03:57:04,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-02-24 03:57:04,216 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:57:04,217 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 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] [2021-02-24 03:57:04,217 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 03:57:04,217 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:57:04,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:57:04,218 INFO L82 PathProgramCache]: Analyzing trace with hash -745129785, now seen corresponding path program 3 times [2021-02-24 03:57:04,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:57:04,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70809746] [2021-02-24 03:57:04,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:57:04,220 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:57:04,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:04,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:04,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:04,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:04,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:57:04,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:04,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:57:04,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:04,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:04,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:57:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:04,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:04,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:04,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-24 03:57:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:04,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:04,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:04,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:04,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 03:57:04,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:04,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-24 03:57:04,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:04,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:57:04,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:57:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:04,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:04,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:04,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:04,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 03:57:04,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:04,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-24 03:57:04,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:04,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:57:04,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:57:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:04,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:04,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:04,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:04,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:04,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:04,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:04,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 03:57:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:04,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:04,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:04,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:04,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:04,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 03:57:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:04,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:04,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:04,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:04,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:04,499 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-02-24 03:57:04,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70809746] [2021-02-24 03:57:04,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:57:04,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-24 03:57:04,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928315206] [2021-02-24 03:57:04,506 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-24 03:57:04,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:57:04,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-24 03:57:04,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-02-24 03:57:04,509 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 14 states. [2021-02-24 03:57:05,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:57:05,407 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2021-02-24 03:57:05,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-24 03:57:05,408 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 63 [2021-02-24 03:57:05,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:57:05,410 INFO L225 Difference]: With dead ends: 68 [2021-02-24 03:57:05,410 INFO L226 Difference]: Without dead ends: 62 [2021-02-24 03:57:05,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2021-02-24 03:57:05,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-02-24 03:57:05,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 53. [2021-02-24 03:57:05,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-02-24 03:57:05,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-02-24 03:57:05,431 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 63 [2021-02-24 03:57:05,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:57:05,432 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-02-24 03:57:05,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-24 03:57:05,432 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2021-02-24 03:57:05,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-02-24 03:57:05,433 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:57:05,434 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-02-24 03:57:05,434 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 03:57:05,434 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:57:05,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:57:05,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1589190530, now seen corresponding path program 4 times [2021-02-24 03:57:05,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:57:05,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896390962] [2021-02-24 03:57:05,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:57:05,437 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:57:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:05,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:05,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:05,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:05,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:05,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:57:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:05,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:05,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:05,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-24 03:57:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:05,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:05,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:05,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:05,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:05,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:05,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:05,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:57:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:05,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:05,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:05,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:05,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:57:05,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:05,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:05,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:57:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:05,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:05,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:05,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:05,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:05,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 03:57:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:05,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:05,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:05,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 03:57:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:05,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:05,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:05,645 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-24 03:57:05,646 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-24 03:57:05,656 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-24 03:57:05,657 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-24 03:57:05,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:05,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:05,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:57:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:05,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:05,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:05,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:57:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:05,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:05,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:05,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 03:57:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:05,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:05,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:05,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 03:57:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:05,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:05,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:05,725 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 17 proven. 42 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-02-24 03:57:05,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896390962] [2021-02-24 03:57:05,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:57:05,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-24 03:57:05,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17446320] [2021-02-24 03:57:05,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 03:57:05,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:57:05,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 03:57:05,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-02-24 03:57:05,727 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 11 states. [2021-02-24 03:57:06,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:57:06,320 INFO L93 Difference]: Finished difference Result 106 states and 135 transitions. [2021-02-24 03:57:06,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 03:57:06,322 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2021-02-24 03:57:06,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:57:06,324 INFO L225 Difference]: With dead ends: 106 [2021-02-24 03:57:06,324 INFO L226 Difference]: Without dead ends: 70 [2021-02-24 03:57:06,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-02-24 03:57:06,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-02-24 03:57:06,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2021-02-24 03:57:06,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-02-24 03:57:06,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2021-02-24 03:57:06,347 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 98 [2021-02-24 03:57:06,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:57:06,348 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2021-02-24 03:57:06,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 03:57:06,348 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2021-02-24 03:57:06,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-02-24 03:57:06,350 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:57:06,350 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:57:06,350 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 03:57:06,350 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:57:06,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:57:06,351 INFO L82 PathProgramCache]: Analyzing trace with hash -2037596062, now seen corresponding path program 5 times [2021-02-24 03:57:06,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:57:06,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879612631] [2021-02-24 03:57:06,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:57:06,354 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:57:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:06,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:06,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:06,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:06,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:06,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:57:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:06,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:06,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:06,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-24 03:57:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:06,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:06,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:06,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:06,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:06,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:06,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:06,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:57:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:06,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:06,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:06,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:06,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:57:06,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:06,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:06,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:57:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:06,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:06,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:06,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:06,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:57:06,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:06,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:06,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:57:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:06,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:06,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:06,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:06,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:06,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 03:57:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:06,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:06,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:06,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 03:57:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:06,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:06,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:06,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 03:57:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:06,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:06,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:06,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:06,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:57:06,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:06,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:06,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:57:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:06,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:06,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:06,663 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-24 03:57:06,664 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-24 03:57:06,678 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-24 03:57:06,678 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-24 03:57:06,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:06,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:06,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:57:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:06,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:06,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:06,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:57:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:06,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:06,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:06,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 03:57:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:06,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:06,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:06,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 03:57:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:06,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:06,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:06,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 03:57:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:06,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:06,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:06,793 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 27 proven. 70 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-02-24 03:57:06,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879612631] [2021-02-24 03:57:06,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:57:06,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-24 03:57:06,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248662846] [2021-02-24 03:57:06,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-24 03:57:06,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:57:06,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-24 03:57:06,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-02-24 03:57:06,795 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand 15 states. [2021-02-24 03:57:07,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:57:07,648 INFO L93 Difference]: Finished difference Result 132 states and 174 transitions. [2021-02-24 03:57:07,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-24 03:57:07,649 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 134 [2021-02-24 03:57:07,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:57:07,652 INFO L225 Difference]: With dead ends: 132 [2021-02-24 03:57:07,652 INFO L226 Difference]: Without dead ends: 85 [2021-02-24 03:57:07,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2021-02-24 03:57:07,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-02-24 03:57:07,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2021-02-24 03:57:07,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-02-24 03:57:07,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2021-02-24 03:57:07,679 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 134 [2021-02-24 03:57:07,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:57:07,680 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2021-02-24 03:57:07,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-24 03:57:07,680 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2021-02-24 03:57:07,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-02-24 03:57:07,681 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:57:07,682 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-02-24 03:57:07,682 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-24 03:57:07,682 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:57:07,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:57:07,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1069346308, now seen corresponding path program 6 times [2021-02-24 03:57:07,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:57:07,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763694482] [2021-02-24 03:57:07,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:57:07,686 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:57:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:07,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:07,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:57:07,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:57:07,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:07,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:57:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:07,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:07,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-24 03:57:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:07,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:07,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 03:57:07,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-24 03:57:07,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:57:07,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:57:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:07,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:07,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 03:57:07,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-24 03:57:07,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:57:07,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:57:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:07,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:07,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 03:57:07,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-24 03:57:07,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:57:07,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:57:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:07,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:07,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:07,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:07,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 03:57:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:07,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:07,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:07,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 03:57:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:07,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:07,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:07,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 03:57:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:07,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:07,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:07,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:57:07,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:07,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 03:57:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:07,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:07,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:07,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:07,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 03:57:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:57:08,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:08,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:57:08,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:57:08,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:57:08,022 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-02-24 03:57:08,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763694482] [2021-02-24 03:57:08,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:57:08,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-24 03:57:08,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993412584] [2021-02-24 03:57:08,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-24 03:57:08,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:57:08,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-24 03:57:08,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-02-24 03:57:08,024 INFO L87 Difference]: Start difference. First operand 76 states and 93 transitions. Second operand 16 states. [2021-02-24 03:57:08,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:57:08,857 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2021-02-24 03:57:08,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-24 03:57:08,857 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 98 [2021-02-24 03:57:08,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:57:08,858 INFO L225 Difference]: With dead ends: 76 [2021-02-24 03:57:08,858 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 03:57:08,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2021-02-24 03:57:08,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 03:57:08,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 03:57:08,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 03:57:08,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 03:57:08,860 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 98 [2021-02-24 03:57:08,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:57:08,860 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 03:57:08,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-24 03:57:08,861 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 03:57:08,861 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 03:57:08,861 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-24 03:57:08,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 03:57:10,533 WARN L202 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 17 [2021-02-24 03:57:10,865 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 22 [2021-02-24 03:57:11,104 WARN L202 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 17 [2021-02-24 03:57:11,287 WARN L202 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 22 [2021-02-24 03:57:11,526 WARN L202 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 19 [2021-02-24 03:57:11,805 WARN L202 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 19 [2021-02-24 03:57:12,310 WARN L202 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 22 [2021-02-24 03:57:12,541 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-24 03:57:12,541 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-24 03:57:12,541 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-24 03:57:12,542 INFO L185 CegarLoopUtils]: At program point fibonacciFINAL(lines 16 24) the Hoare annotation is: (and (or (not (<= |fibonacci_#in~n| 1)) (and (<= 0 |fibonacci_#res|) (or (and (<= |fibonacci_#in~n| 0) (<= |fibonacci_#res| 0)) (and (<= 1 |fibonacci_#res|) (<= |fibonacci_#res| 1))))) (= fibonacci_~n |fibonacci_#in~n|) (<= |fibonacci_#in~n| (+ |fibonacci_#res| 1))) [2021-02-24 03:57:12,542 INFO L192 CegarLoopUtils]: At program point fibonacciENTRY(lines 16 24) the Hoare annotation is: true [2021-02-24 03:57:12,542 INFO L185 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: (and (= fibonacci_~n |fibonacci_#in~n|) (< 1 fibonacci_~n)) [2021-02-24 03:57:12,542 INFO L185 CegarLoopUtils]: At program point L22-1(line 22) the Hoare annotation is: (and (let ((.cse0 (= fibonacci_~n |fibonacci_#in~n|))) (or (and (<= fibonacci_~n (+ |fibonacci_#t~ret7| 2)) (<= 3 fibonacci_~n) .cse0) (and (<= fibonacci_~n (+ |fibonacci_#t~ret7| 1)) .cse0))) (< 1 fibonacci_~n)) [2021-02-24 03:57:12,542 INFO L185 CegarLoopUtils]: At program point L20(line 20) the Hoare annotation is: (and (<= |fibonacci_#in~n| 1) (= fibonacci_~n |fibonacci_#in~n|) (< 0 fibonacci_~n)) [2021-02-24 03:57:12,543 INFO L185 CegarLoopUtils]: At program point L22-2(line 22) the Hoare annotation is: (and (let ((.cse0 (= fibonacci_~n |fibonacci_#in~n|))) (or (and (<= fibonacci_~n (+ |fibonacci_#t~ret7| 2)) (<= 3 fibonacci_~n) .cse0) (and (<= fibonacci_~n (+ |fibonacci_#t~ret7| 1)) .cse0))) (< 1 fibonacci_~n)) [2021-02-24 03:57:12,543 INFO L185 CegarLoopUtils]: At program point L19(lines 19 23) the Hoare annotation is: (and (= fibonacci_~n |fibonacci_#in~n|) (< 0 fibonacci_~n)) [2021-02-24 03:57:12,543 INFO L185 CegarLoopUtils]: At program point L22-3(line 22) the Hoare annotation is: (let ((.cse0 (= fibonacci_~n |fibonacci_#in~n|)) (.cse1 (<= |fibonacci_#in~n| (+ |fibonacci_#t~ret7| |fibonacci_#t~ret8| 1)))) (or (and (<= fibonacci_~n (+ |fibonacci_#t~ret7| 1)) .cse0 .cse1 (< 1 fibonacci_~n)) (and (<= fibonacci_~n (+ |fibonacci_#t~ret7| 2)) (<= 3 fibonacci_~n) .cse0 .cse1))) [2021-02-24 03:57:12,543 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: (and (= fibonacci_~n |fibonacci_#in~n|) (<= |fibonacci_#in~n| 0)) [2021-02-24 03:57:12,543 INFO L185 CegarLoopUtils]: At program point L22-4(line 22) the Hoare annotation is: (let ((.cse0 (= fibonacci_~n |fibonacci_#in~n|)) (.cse1 (<= |fibonacci_#in~n| (+ |fibonacci_#t~ret7| |fibonacci_#t~ret8| 1)))) (or (and (<= fibonacci_~n (+ |fibonacci_#t~ret7| 1)) .cse0 .cse1 (< 1 fibonacci_~n)) (and (<= fibonacci_~n (+ |fibonacci_#t~ret7| 2)) (<= 3 fibonacci_~n) .cse0 .cse1))) [2021-02-24 03:57:12,543 INFO L185 CegarLoopUtils]: At program point fibonacciEXIT(lines 16 24) the Hoare annotation is: (and (or (not (<= |fibonacci_#in~n| 1)) (and (<= 0 |fibonacci_#res|) (or (and (<= |fibonacci_#in~n| 0) (<= |fibonacci_#res| 0)) (and (<= 1 |fibonacci_#res|) (<= |fibonacci_#res| 1))))) (= fibonacci_~n |fibonacci_#in~n|) (<= |fibonacci_#in~n| (+ |fibonacci_#res| 1))) [2021-02-24 03:57:12,544 INFO L185 CegarLoopUtils]: At program point L17(lines 17 23) the Hoare annotation is: (= fibonacci_~n |fibonacci_#in~n|) [2021-02-24 03:57:12,544 INFO L185 CegarLoopUtils]: At program point L22-5(line 22) the Hoare annotation is: (let ((.cse0 (= fibonacci_~n |fibonacci_#in~n|)) (.cse1 (<= |fibonacci_#in~n| (+ |fibonacci_#res| 1))) (.cse2 (<= |fibonacci_#in~n| (+ |fibonacci_#t~ret7| |fibonacci_#t~ret8| 1)))) (or (and (<= fibonacci_~n (+ |fibonacci_#t~ret7| 1)) .cse0 .cse1 .cse2 (< 1 fibonacci_~n)) (and (<= fibonacci_~n (+ |fibonacci_#t~ret7| 2)) (<= 3 fibonacci_~n) .cse0 .cse1 .cse2))) [2021-02-24 03:57:12,544 INFO L185 CegarLoopUtils]: At program point L22-6(line 22) the Hoare annotation is: (and (= fibonacci_~n |fibonacci_#in~n|) (<= |fibonacci_#in~n| (+ |fibonacci_#res| 1)) (< 1 fibonacci_~n)) [2021-02-24 03:57:12,544 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-24 03:57:12,544 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-24 03:57:12,544 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 03:57:12,544 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-24 03:57:12,544 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 03:57:12,545 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-24 03:57:12,545 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|)) [2021-02-24 03:57:12,545 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-24 03:57:12,545 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-24 03:57:12,545 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 03:57:12,545 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 03:57:12,545 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 03:57:12,545 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 03:57:12,546 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 03:57:12,546 INFO L185 CegarLoopUtils]: At program point L33(lines 33 37) the Hoare annotation is: (<= main_~x~0 (+ main_~result~0 1)) [2021-02-24 03:57:12,546 INFO L192 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: true [2021-02-24 03:57:12,546 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) the Hoare annotation is: false [2021-02-24 03:57:12,546 INFO L185 CegarLoopUtils]: At program point L32-1(line 32) the Hoare annotation is: (<= main_~x~0 (+ |main_#t~ret10| 1)) [2021-02-24 03:57:12,546 INFO L192 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: true [2021-02-24 03:57:12,546 INFO L185 CegarLoopUtils]: At program point L32-2(line 32) the Hoare annotation is: (<= main_~x~0 (+ |main_#t~ret10| 1)) [2021-02-24 03:57:12,546 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 27 38) the Hoare annotation is: true [2021-02-24 03:57:12,547 INFO L192 CegarLoopUtils]: At program point L29(lines 29 31) the Hoare annotation is: true [2021-02-24 03:57:12,547 INFO L185 CegarLoopUtils]: At program point L32-3(line 32) the Hoare annotation is: (and (<= main_~x~0 (+ main_~result~0 1)) (<= main_~x~0 (+ |main_#t~ret10| 1))) [2021-02-24 03:57:12,547 INFO L192 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: true [2021-02-24 03:57:12,547 INFO L192 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: true [2021-02-24 03:57:12,547 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 27 38) the Hoare annotation is: true [2021-02-24 03:57:12,547 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 27 38) the Hoare annotation is: true [2021-02-24 03:57:12,547 INFO L185 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: false [2021-02-24 03:57:12,547 INFO L185 CegarLoopUtils]: At program point L36-1(line 36) the Hoare annotation is: false [2021-02-24 03:57:12,548 INFO L192 CegarLoopUtils]: At program point L34(line 34) the Hoare annotation is: true [2021-02-24 03:57:12,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:57:12 BoogieIcfgContainer [2021-02-24 03:57:12,568 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:57:12,569 INFO L168 Benchmark]: Toolchain (without parser) took 14106.81 ms. Allocated memory was 157.3 MB in the beginning and 327.2 MB in the end (delta: 169.9 MB). Free memory was 134.1 MB in the beginning and 296.9 MB in the end (delta: -162.8 MB). Peak memory consumption was 194.6 MB. Max. memory is 8.0 GB. [2021-02-24 03:57:12,570 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 157.3 MB. Free memory is still 135.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:57:12,570 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.66 ms. Allocated memory is still 157.3 MB. Free memory was 132.9 MB in the beginning and 123.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 03:57:12,570 INFO L168 Benchmark]: Boogie Preprocessor took 38.46 ms. Allocated memory is still 157.3 MB. Free memory was 123.2 MB in the beginning and 121.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:57:12,571 INFO L168 Benchmark]: RCFGBuilder took 469.16 ms. Allocated memory is still 157.3 MB. Free memory was 121.8 MB in the beginning and 107.2 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-24 03:57:12,571 INFO L168 Benchmark]: TraceAbstraction took 13329.72 ms. Allocated memory was 157.3 MB in the beginning and 327.2 MB in the end (delta: 169.9 MB). Free memory was 106.7 MB in the beginning and 296.9 MB in the end (delta: -190.2 MB). Peak memory consumption was 167.3 MB. Max. memory is 8.0 GB. [2021-02-24 03:57:12,572 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 157.3 MB. Free memory is still 135.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 250.66 ms. Allocated memory is still 157.3 MB. Free memory was 132.9 MB in the beginning and 123.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.46 ms. Allocated memory is still 157.3 MB. Free memory was 123.2 MB in the beginning and 121.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 469.16 ms. Allocated memory is still 157.3 MB. Free memory was 121.8 MB in the beginning and 107.2 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 13329.72 ms. Allocated memory was 157.3 MB in the beginning and 327.2 MB in the end (delta: 169.9 MB). Free memory was 106.7 MB in the beginning and 296.9 MB in the end (delta: -190.2 MB). Peak memory consumption was 167.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 36]: 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: 16]: Procedure Contract for fibonacci Derived contract for procedure fibonacci: ((!(\old(n) <= 1) || (0 <= \result && ((\old(n) <= 0 && \result <= 0) || (1 <= \result && \result <= 1)))) && n == \old(n)) && \old(n) <= \result + 1 - ProcedureContractResult [Line: 27]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.4s, OverallIterations: 10, TraceHistogramMax: 13, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 345 SDtfs, 691 SDslu, 724 SDs, 0 SdLazy, 1736 SolverSat, 305 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 329 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 29 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 44 LocationsWithAnnotation, 380 PreInvPairs, 651 NumberOfFragments, 368 HoareAnnotationTreeSize, 380 FomulaSimplifications, 39176 FormulaSimplificationTreeSizeReduction, 1.4s HoareSimplificationTime, 44 FomulaSimplificationsInter, 8391 FormulaSimplificationTreeSizeReductionInter, 2.1s 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...