/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:53:10,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:53:10,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:53:10,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 17:53:10,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:53:10,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:53:10,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:53:10,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:53:10,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:53:10,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:53:10,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:53:10,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:53:10,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:53:10,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:53:10,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:53:10,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:53:10,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 17:53:10,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:53:10,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:53:10,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:53:10,709 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 17:53:10,722 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:53:10,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:53:10,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:53:10,724 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:53:10,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:53:10,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:53:10,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:53:10,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:53:10,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:53:10,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:53:10,727 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:53:10,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:53:10,727 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:53:10,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:53:10,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:53:10,728 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:53:10,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:53:10,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:53:10,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:53:10,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:53:10,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:53:10,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:53:10,731 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:53:11,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:53:11,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:53:11,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:53:11,140 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:53:11,141 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:53:11,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c [2021-02-23 17:53:11,218 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99ef5048e/c4000c38ff1244968605419d1a6db0bb/FLAG9a80c8f24 [2021-02-23 17:53:11,819 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:53:11,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c [2021-02-23 17:53:11,828 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99ef5048e/c4000c38ff1244968605419d1a6db0bb/FLAG9a80c8f24 [2021-02-23 17:53:12,210 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99ef5048e/c4000c38ff1244968605419d1a6db0bb [2021-02-23 17:53:12,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:53:12,234 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:53:12,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:53:12,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:53:12,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:53:12,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:53:12" (1/1) ... [2021-02-23 17:53:12,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e908ede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:53:12, skipping insertion in model container [2021-02-23 17:53:12,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:53:12" (1/1) ... [2021-02-23 17:53:12,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:53:12,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:53:12,513 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c[946,959] [2021-02-23 17:53:12,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:53:12,535 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:53:12,561 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c[946,959] [2021-02-23 17:53:12,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:53:12,582 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:53:12,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:53:12 WrapperNode [2021-02-23 17:53:12,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:53:12,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:53:12,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:53:12,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:53:12,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:53:12" (1/1) ... [2021-02-23 17:53:12,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:53:12" (1/1) ... [2021-02-23 17:53:12,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:53:12" (1/1) ... [2021-02-23 17:53:12,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:53:12" (1/1) ... [2021-02-23 17:53:12,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:53:12" (1/1) ... [2021-02-23 17:53:12,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:53:12" (1/1) ... [2021-02-23 17:53:12,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:53:12" (1/1) ... [2021-02-23 17:53:12,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:53:12,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:53:12,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:53:12,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:53:12,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:53:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:53:12,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:53:12,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:53:12,734 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:53:12,734 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2021-02-23 17:53:12,734 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2021-02-23 17:53:12,734 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:53:12,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 17:53:12,735 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:53:12,735 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:53:12,735 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:53:12,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:53:12,736 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2021-02-23 17:53:12,736 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2021-02-23 17:53:12,736 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:53:12,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:53:12,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:53:12,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:53:12,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:53:12,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:53:12,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:53:13,109 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:53:13,110 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 17:53:13,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:53:13 BoogieIcfgContainer [2021-02-23 17:53:13,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:53:13,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:53:13,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:53:13,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:53:13,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:53:12" (1/3) ... [2021-02-23 17:53:13,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6828f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:53:13, skipping insertion in model container [2021-02-23 17:53:13,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:53:12" (2/3) ... [2021-02-23 17:53:13,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6828f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:53:13, skipping insertion in model container [2021-02-23 17:53:13,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:53:13" (3/3) ... [2021-02-23 17:53:13,125 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4-1.c [2021-02-23 17:53:13,133 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:53:13,139 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:53:13,162 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:53:13,202 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:53:13,202 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:53:13,202 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:53:13,203 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:53:13,203 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:53:13,203 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:53:13,203 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:53:13,203 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:53:13,228 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2021-02-23 17:53:13,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-23 17:53:13,242 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:13,243 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] [2021-02-23 17:53:13,244 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:13,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:13,253 INFO L82 PathProgramCache]: Analyzing trace with hash 2042570277, now seen corresponding path program 1 times [2021-02-23 17:53:13,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:13,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659395537] [2021-02-23 17:53:13,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:13,343 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:13,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:13,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:13,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:13,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:13,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:13,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:13,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:13,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:13,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:13,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:13,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:13,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:13,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:13,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:13,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:53:13,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659395537] [2021-02-23 17:53:13,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:13,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 17:53:13,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584174759] [2021-02-23 17:53:13,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 17:53:13,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:13,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 17:53:13,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 17:53:13,707 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 6 states. [2021-02-23 17:53:14,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:14,155 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2021-02-23 17:53:14,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 17:53:14,157 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-02-23 17:53:14,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:14,173 INFO L225 Difference]: With dead ends: 67 [2021-02-23 17:53:14,174 INFO L226 Difference]: Without dead ends: 50 [2021-02-23 17:53:14,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-23 17:53:14,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-02-23 17:53:14,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-02-23 17:53:14,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-02-23 17:53:14,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2021-02-23 17:53:14,245 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 24 [2021-02-23 17:53:14,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:14,245 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2021-02-23 17:53:14,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 17:53:14,246 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2021-02-23 17:53:14,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-23 17:53:14,248 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:14,248 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] [2021-02-23 17:53:14,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:53:14,249 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:14,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:14,250 INFO L82 PathProgramCache]: Analyzing trace with hash -589714176, now seen corresponding path program 1 times [2021-02-23 17:53:14,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:14,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437945538] [2021-02-23 17:53:14,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:14,253 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:14,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:14,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:14,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:14,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:14,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:14,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:14,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:14,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:14,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:14,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:14,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:14,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:14,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:14,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:14,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:53:14,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437945538] [2021-02-23 17:53:14,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:14,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 17:53:14,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980969762] [2021-02-23 17:53:14,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 17:53:14,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:14,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 17:53:14,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 17:53:14,417 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 6 states. [2021-02-23 17:53:14,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:14,680 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2021-02-23 17:53:14,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 17:53:14,681 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2021-02-23 17:53:14,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:14,683 INFO L225 Difference]: With dead ends: 58 [2021-02-23 17:53:14,683 INFO L226 Difference]: Without dead ends: 52 [2021-02-23 17:53:14,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-23 17:53:14,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-23 17:53:14,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2021-02-23 17:53:14,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-02-23 17:53:14,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2021-02-23 17:53:14,702 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 25 [2021-02-23 17:53:14,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:14,703 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2021-02-23 17:53:14,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 17:53:14,703 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2021-02-23 17:53:14,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-23 17:53:14,705 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:14,706 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:53:14,706 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:53:14,706 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:14,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:14,707 INFO L82 PathProgramCache]: Analyzing trace with hash -374229603, now seen corresponding path program 1 times [2021-02-23 17:53:14,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:14,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202347013] [2021-02-23 17:53:14,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:14,710 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:14,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:14,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:14,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:14,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:14,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:14,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:14,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:14,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:14,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:14,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:14,804 WARN L141 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size [2021-02-23 17:53:14,805 WARN L147 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size 3 [2021-02-23 17:53:14,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:14,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:53:14,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:14,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:14,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:14,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:14,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:14,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:14,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:14,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:14,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:14,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-02-23 17:53:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:14,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:14,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:14,854 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-23 17:53:14,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202347013] [2021-02-23 17:53:14,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:14,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 17:53:14,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367555524] [2021-02-23 17:53:14,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 17:53:14,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:14,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 17:53:14,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-23 17:53:14,857 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 7 states. [2021-02-23 17:53:15,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:15,179 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2021-02-23 17:53:15,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 17:53:15,180 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2021-02-23 17:53:15,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:15,182 INFO L225 Difference]: With dead ends: 90 [2021-02-23 17:53:15,182 INFO L226 Difference]: Without dead ends: 54 [2021-02-23 17:53:15,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-02-23 17:53:15,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-02-23 17:53:15,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2021-02-23 17:53:15,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-02-23 17:53:15,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2021-02-23 17:53:15,200 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 41 [2021-02-23 17:53:15,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:15,201 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2021-02-23 17:53:15,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 17:53:15,201 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2021-02-23 17:53:15,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-23 17:53:15,203 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:15,203 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:53:15,203 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 17:53:15,204 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:15,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:15,204 INFO L82 PathProgramCache]: Analyzing trace with hash -245289899, now seen corresponding path program 1 times [2021-02-23 17:53:15,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:15,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912822147] [2021-02-23 17:53:15,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:15,207 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:15,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:15,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:15,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:15,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:15,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:15,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:15,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:15,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:15,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:15,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:15,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:15,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:15,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:15,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:15,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:15,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:15,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:15,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:15,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:15,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:15,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:15,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:15,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:15,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:15,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-23 17:53:15,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912822147] [2021-02-23 17:53:15,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:15,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 17:53:15,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268345882] [2021-02-23 17:53:15,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 17:53:15,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:15,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 17:53:15,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-23 17:53:15,377 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 9 states. [2021-02-23 17:53:15,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:15,944 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2021-02-23 17:53:15,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 17:53:15,944 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2021-02-23 17:53:15,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:15,947 INFO L225 Difference]: With dead ends: 82 [2021-02-23 17:53:15,947 INFO L226 Difference]: Without dead ends: 76 [2021-02-23 17:53:15,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-02-23 17:53:15,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-02-23 17:53:15,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2021-02-23 17:53:15,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-02-23 17:53:15,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2021-02-23 17:53:15,970 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 42 [2021-02-23 17:53:15,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:15,971 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2021-02-23 17:53:15,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 17:53:15,971 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2021-02-23 17:53:15,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-23 17:53:15,974 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:15,974 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:53:15,974 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 17:53:15,975 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:15,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:15,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1853062104, now seen corresponding path program 1 times [2021-02-23 17:53:15,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:15,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832135079] [2021-02-23 17:53:15,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:15,978 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:16,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:16,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:16,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:16,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:16,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:16,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:16,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:16,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:16,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:16,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:16,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:16,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:16,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:16,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:16,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:16,099 WARN L141 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size [2021-02-23 17:53:16,102 WARN L147 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size 3 [2021-02-23 17:53:16,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:16,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:53:16,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:16,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:16,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:16,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:16,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:16,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:16,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:16,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:16,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:16,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-02-23 17:53:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:16,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:16,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:16,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-23 17:53:16,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:16,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:16,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:16,161 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-02-23 17:53:16,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832135079] [2021-02-23 17:53:16,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:16,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 17:53:16,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417142933] [2021-02-23 17:53:16,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 17:53:16,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:16,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 17:53:16,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-23 17:53:16,164 INFO L87 Difference]: Start difference. First operand 74 states and 91 transitions. Second operand 7 states. [2021-02-23 17:53:16,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:16,594 INFO L93 Difference]: Finished difference Result 138 states and 186 transitions. [2021-02-23 17:53:16,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 17:53:16,595 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2021-02-23 17:53:16,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:16,597 INFO L225 Difference]: With dead ends: 138 [2021-02-23 17:53:16,598 INFO L226 Difference]: Without dead ends: 78 [2021-02-23 17:53:16,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-02-23 17:53:16,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-02-23 17:53:16,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-02-23 17:53:16,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-23 17:53:16,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 97 transitions. [2021-02-23 17:53:16,623 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 97 transitions. Word has length 58 [2021-02-23 17:53:16,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:16,624 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 97 transitions. [2021-02-23 17:53:16,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 17:53:16,624 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 97 transitions. [2021-02-23 17:53:16,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-02-23 17:53:16,627 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:16,627 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:53:16,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 17:53:16,628 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:16,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:16,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1662933173, now seen corresponding path program 1 times [2021-02-23 17:53:16,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:16,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354091744] [2021-02-23 17:53:16,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:16,635 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:16,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:16,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:16,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:16,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:16,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:16,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:16,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:16,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:16,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:16,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:16,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:16,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:16,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:16,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:16,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:16,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:16,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:16,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:16,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:16,816 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-23 17:53:16,817 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-23 17:53:16,827 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-23 17:53:16,828 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-23 17:53:16,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:16,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:16,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:16,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:16,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:16,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:16,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:16,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:16,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:16,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:16,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:16,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:16,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:16,887 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-02-23 17:53:16,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354091744] [2021-02-23 17:53:16,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:16,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 17:53:16,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475018556] [2021-02-23 17:53:16,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 17:53:16,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:16,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 17:53:16,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-02-23 17:53:16,890 INFO L87 Difference]: Start difference. First operand 78 states and 97 transitions. Second operand 9 states. [2021-02-23 17:53:17,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:17,390 INFO L93 Difference]: Finished difference Result 150 states and 205 transitions. [2021-02-23 17:53:17,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-23 17:53:17,391 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2021-02-23 17:53:17,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:17,393 INFO L225 Difference]: With dead ends: 150 [2021-02-23 17:53:17,393 INFO L226 Difference]: Without dead ends: 86 [2021-02-23 17:53:17,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-02-23 17:53:17,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-02-23 17:53:17,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2021-02-23 17:53:17,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-02-23 17:53:17,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2021-02-23 17:53:17,421 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 59 [2021-02-23 17:53:17,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:17,421 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2021-02-23 17:53:17,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 17:53:17,422 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2021-02-23 17:53:17,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-02-23 17:53:17,424 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:17,425 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:53:17,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 17:53:17,425 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:17,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:17,426 INFO L82 PathProgramCache]: Analyzing trace with hash -702082707, now seen corresponding path program 1 times [2021-02-23 17:53:17,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:17,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687346432] [2021-02-23 17:53:17,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:17,428 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:17,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:17,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:17,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:17,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:17,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:17,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:17,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:17,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:17,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:17,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:17,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:17,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:17,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:17,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:17,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:17,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:17,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:17,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:17,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:17,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:17,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:17,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:17,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:17,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:17,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:17,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:17,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:17,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:17,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:17,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:17,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:17,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:17,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:17,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:17,633 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-02-23 17:53:17,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687346432] [2021-02-23 17:53:17,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:17,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 17:53:17,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119512985] [2021-02-23 17:53:17,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 17:53:17,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:17,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 17:53:17,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-02-23 17:53:17,635 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand 11 states. [2021-02-23 17:53:18,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:18,344 INFO L93 Difference]: Finished difference Result 126 states and 166 transitions. [2021-02-23 17:53:18,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 17:53:18,344 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2021-02-23 17:53:18,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:18,347 INFO L225 Difference]: With dead ends: 126 [2021-02-23 17:53:18,347 INFO L226 Difference]: Without dead ends: 120 [2021-02-23 17:53:18,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-02-23 17:53:18,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-02-23 17:53:18,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 114. [2021-02-23 17:53:18,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2021-02-23 17:53:18,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 153 transitions. [2021-02-23 17:53:18,387 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 153 transitions. Word has length 60 [2021-02-23 17:53:18,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:18,390 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 153 transitions. [2021-02-23 17:53:18,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 17:53:18,390 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 153 transitions. [2021-02-23 17:53:18,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-02-23 17:53:18,397 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:18,398 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:53:18,398 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 17:53:18,398 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:18,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:18,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1046643654, now seen corresponding path program 1 times [2021-02-23 17:53:18,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:18,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69471069] [2021-02-23 17:53:18,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:18,404 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:18,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:18,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:18,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:18,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:18,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:18,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:18,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:18,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:18,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:18,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:18,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:18,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:18,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:18,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:18,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:18,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:18,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:18,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:18,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:18,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:18,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:18,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:18,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:18,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:18,568 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-23 17:53:18,568 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-23 17:53:18,578 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-23 17:53:18,579 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-23 17:53:18,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:18,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:18,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:18,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:18,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:18,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:18,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:18,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:18,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:18,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:18,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:18,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:18,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:18,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-02-23 17:53:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:18,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:18,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:18,647 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-02-23 17:53:18,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69471069] [2021-02-23 17:53:18,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:18,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 17:53:18,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697113786] [2021-02-23 17:53:18,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 17:53:18,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:18,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 17:53:18,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-02-23 17:53:18,650 INFO L87 Difference]: Start difference. First operand 114 states and 153 transitions. Second operand 10 states. [2021-02-23 17:53:19,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:19,178 INFO L93 Difference]: Finished difference Result 235 states and 356 transitions. [2021-02-23 17:53:19,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 17:53:19,179 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2021-02-23 17:53:19,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:19,181 INFO L225 Difference]: With dead ends: 235 [2021-02-23 17:53:19,182 INFO L226 Difference]: Without dead ends: 135 [2021-02-23 17:53:19,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-02-23 17:53:19,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-02-23 17:53:19,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 123. [2021-02-23 17:53:19,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2021-02-23 17:53:19,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 169 transitions. [2021-02-23 17:53:19,222 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 169 transitions. Word has length 77 [2021-02-23 17:53:19,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:19,222 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 169 transitions. [2021-02-23 17:53:19,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 17:53:19,222 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 169 transitions. [2021-02-23 17:53:19,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-02-23 17:53:19,225 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:19,225 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:53:19,225 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 17:53:19,226 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:19,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:19,226 INFO L82 PathProgramCache]: Analyzing trace with hash 549553181, now seen corresponding path program 1 times [2021-02-23 17:53:19,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:19,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712079412] [2021-02-23 17:53:19,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:19,229 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:19,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:19,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:19,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:19,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:19,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:19,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:19,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:19,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:19,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:19,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:19,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:19,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:19,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:19,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:19,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:19,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:19,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:19,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:19,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:19,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:19,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:19,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:19,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:19,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:19,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:19,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:19,376 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-23 17:53:19,377 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-23 17:53:19,389 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-23 17:53:19,390 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-23 17:53:19,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:19,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:19,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:19,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:19,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:19,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:19,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:19,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:19,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:19,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:19,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:19,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:53:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:19,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:19,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:19,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:19,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:19,468 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-02-23 17:53:19,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712079412] [2021-02-23 17:53:19,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:19,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-23 17:53:19,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552435786] [2021-02-23 17:53:19,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 17:53:19,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:19,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 17:53:19,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-02-23 17:53:19,470 INFO L87 Difference]: Start difference. First operand 123 states and 169 transitions. Second operand 13 states. [2021-02-23 17:53:20,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:20,227 INFO L93 Difference]: Finished difference Result 265 states and 408 transitions. [2021-02-23 17:53:20,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 17:53:20,228 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 78 [2021-02-23 17:53:20,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:20,230 INFO L225 Difference]: With dead ends: 265 [2021-02-23 17:53:20,230 INFO L226 Difference]: Without dead ends: 159 [2021-02-23 17:53:20,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2021-02-23 17:53:20,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-02-23 17:53:20,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 141. [2021-02-23 17:53:20,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2021-02-23 17:53:20,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 199 transitions. [2021-02-23 17:53:20,287 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 199 transitions. Word has length 78 [2021-02-23 17:53:20,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:20,289 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 199 transitions. [2021-02-23 17:53:20,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 17:53:20,290 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 199 transitions. [2021-02-23 17:53:20,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-02-23 17:53:20,296 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:20,296 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2021-02-23 17:53:20,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 17:53:20,297 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:20,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:20,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1728392861, now seen corresponding path program 2 times [2021-02-23 17:53:20,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:20,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292905458] [2021-02-23 17:53:20,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:20,303 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:20,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:20,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:20,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:20,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:20,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:20,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:20,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:20,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:20,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:20,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:20,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:20,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:20,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:20,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:20,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:20,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:20,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:20,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:20,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:20,461 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:20,462 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:20,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:20,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:20,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:20,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:20,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:20,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:20,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:20,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:20,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:20,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:20,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:20,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:20,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:20,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:20,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:20,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:20,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:20,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:20,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:20,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:20,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:53:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:20,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:20,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:20,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:20,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:20,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:20,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:20,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:20,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:20,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:20,617 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-23 17:53:20,618 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-23 17:53:20,633 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-23 17:53:20,634 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-23 17:53:20,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:20,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:20,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:20,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:20,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:20,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:20,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:20,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:20,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:20,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:20,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:20,707 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-02-23 17:53:20,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292905458] [2021-02-23 17:53:20,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:20,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-23 17:53:20,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016707384] [2021-02-23 17:53:20,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-23 17:53:20,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:20,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-23 17:53:20,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-02-23 17:53:20,710 INFO L87 Difference]: Start difference. First operand 141 states and 199 transitions. Second operand 17 states. [2021-02-23 17:53:22,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:22,068 INFO L93 Difference]: Finished difference Result 273 states and 428 transitions. [2021-02-23 17:53:22,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 17:53:22,069 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 113 [2021-02-23 17:53:22,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:22,073 INFO L225 Difference]: With dead ends: 273 [2021-02-23 17:53:22,073 INFO L226 Difference]: Without dead ends: 124 [2021-02-23 17:53:22,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=885, Unknown=0, NotChecked=0, Total=1056 [2021-02-23 17:53:22,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-02-23 17:53:22,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 111. [2021-02-23 17:53:22,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2021-02-23 17:53:22,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 135 transitions. [2021-02-23 17:53:22,102 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 135 transitions. Word has length 113 [2021-02-23 17:53:22,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:22,102 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 135 transitions. [2021-02-23 17:53:22,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-23 17:53:22,103 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 135 transitions. [2021-02-23 17:53:22,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-02-23 17:53:22,104 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:22,105 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2021-02-23 17:53:22,105 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 17:53:22,105 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:22,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:22,106 INFO L82 PathProgramCache]: Analyzing trace with hash -645905939, now seen corresponding path program 1 times [2021-02-23 17:53:22,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:22,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693691746] [2021-02-23 17:53:22,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:22,109 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:22,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:22,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:22,152 WARN L141 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-02-23 17:53:22,153 WARN L147 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size 7 [2021-02-23 17:53:22,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:22,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:22,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:22,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:22,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:22,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:22,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:53:22,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:22,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:22,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:22,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:22,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:53:22,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:22,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:22,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:22,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:22,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:53:22,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:22,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:22,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:22,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:22,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:22,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:22,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:22,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:22,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:22,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:22,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:53:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:22,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:22,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:22,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:53:22,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:22,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:22,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:22,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:22,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:22,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:22,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:22,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:22,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:22,582 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-02-23 17:53:22,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693691746] [2021-02-23 17:53:22,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:22,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-02-23 17:53:22,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584235698] [2021-02-23 17:53:22,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-23 17:53:22,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:22,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-23 17:53:22,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-02-23 17:53:22,585 INFO L87 Difference]: Start difference. First operand 111 states and 135 transitions. Second operand 18 states. [2021-02-23 17:53:24,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:24,305 INFO L93 Difference]: Finished difference Result 145 states and 175 transitions. [2021-02-23 17:53:24,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-23 17:53:24,305 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 95 [2021-02-23 17:53:24,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:24,307 INFO L225 Difference]: With dead ends: 145 [2021-02-23 17:53:24,307 INFO L226 Difference]: Without dead ends: 139 [2021-02-23 17:53:24,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=160, Invalid=1400, Unknown=0, NotChecked=0, Total=1560 [2021-02-23 17:53:24,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-02-23 17:53:24,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 119. [2021-02-23 17:53:24,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2021-02-23 17:53:24,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 145 transitions. [2021-02-23 17:53:24,336 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 145 transitions. Word has length 95 [2021-02-23 17:53:24,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:24,336 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 145 transitions. [2021-02-23 17:53:24,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-23 17:53:24,336 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 145 transitions. [2021-02-23 17:53:24,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-02-23 17:53:24,338 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:24,338 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-02-23 17:53:24,338 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 17:53:24,339 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:24,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:24,339 INFO L82 PathProgramCache]: Analyzing trace with hash -734654733, now seen corresponding path program 2 times [2021-02-23 17:53:24,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:24,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842976266] [2021-02-23 17:53:24,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:24,342 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:24,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:24,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:24,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:24,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:24,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:24,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:24,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:24,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:24,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:24,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:24,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:24,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:24,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:24,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:24,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:24,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:24,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:24,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:24,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:24,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:24,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:24,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:24,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:24,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:24,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:24,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:24,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:24,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:24,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:24,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:24,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:24,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:24,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:24,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:24,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:24,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:24,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:24,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:24,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 17:53:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:24,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:24,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:24,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-02-23 17:53:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:24,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:24,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:24,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:24,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:24,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:24,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:24,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:24,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:24,533 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-02-23 17:53:24,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842976266] [2021-02-23 17:53:24,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:24,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 17:53:24,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027321882] [2021-02-23 17:53:24,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 17:53:24,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:24,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 17:53:24,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-23 17:53:24,536 INFO L87 Difference]: Start difference. First operand 119 states and 145 transitions. Second operand 9 states. [2021-02-23 17:53:25,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:25,058 INFO L93 Difference]: Finished difference Result 205 states and 261 transitions. [2021-02-23 17:53:25,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 17:53:25,059 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2021-02-23 17:53:25,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:25,061 INFO L225 Difference]: With dead ends: 205 [2021-02-23 17:53:25,061 INFO L226 Difference]: Without dead ends: 102 [2021-02-23 17:53:25,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-02-23 17:53:25,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-02-23 17:53:25,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-02-23 17:53:25,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2021-02-23 17:53:25,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 122 transitions. [2021-02-23 17:53:25,093 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 122 transitions. Word has length 96 [2021-02-23 17:53:25,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:25,093 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 122 transitions. [2021-02-23 17:53:25,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 17:53:25,093 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 122 transitions. [2021-02-23 17:53:25,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-02-23 17:53:25,095 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:25,095 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:53:25,095 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-23 17:53:25,095 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:25,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:25,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1853362190, now seen corresponding path program 3 times [2021-02-23 17:53:25,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:25,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453665720] [2021-02-23 17:53:25,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:25,103 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:25,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:25,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:25,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:25,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:25,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:25,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:25,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:25,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:25,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:25,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:25,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:25,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:25,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:25,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:25,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:25,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:25,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:25,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:25,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:25,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:25,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:25,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:25,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:25,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:25,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:25,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:25,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:25,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:25,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:25,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:25,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:25,277 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-23 17:53:25,277 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-23 17:53:25,290 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-23 17:53:25,290 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-23 17:53:25,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:25,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:25,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:25,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:25,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:25,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:25,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:25,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:25,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:25,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:25,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:25,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:53:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:25,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:25,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:25,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:25,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:25,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-23 17:53:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:25,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:25,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:25,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:25,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:25,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:25,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:25,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:25,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:25,390 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-02-23 17:53:25,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453665720] [2021-02-23 17:53:25,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:25,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-23 17:53:25,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145540491] [2021-02-23 17:53:25,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 17:53:25,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:25,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 17:53:25,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-02-23 17:53:25,392 INFO L87 Difference]: Start difference. First operand 102 states and 122 transitions. Second operand 13 states. [2021-02-23 17:53:26,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:26,125 INFO L93 Difference]: Finished difference Result 187 states and 231 transitions. [2021-02-23 17:53:26,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 17:53:26,127 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 114 [2021-02-23 17:53:26,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:26,129 INFO L225 Difference]: With dead ends: 187 [2021-02-23 17:53:26,129 INFO L226 Difference]: Without dead ends: 102 [2021-02-23 17:53:26,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-02-23 17:53:26,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-02-23 17:53:26,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-02-23 17:53:26,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2021-02-23 17:53:26,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 121 transitions. [2021-02-23 17:53:26,158 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 121 transitions. Word has length 114 [2021-02-23 17:53:26,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:26,158 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 121 transitions. [2021-02-23 17:53:26,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 17:53:26,158 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 121 transitions. [2021-02-23 17:53:26,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-02-23 17:53:26,161 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:26,161 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 8, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-02-23 17:53:26,162 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-23 17:53:26,162 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:26,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:26,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1120622697, now seen corresponding path program 2 times [2021-02-23 17:53:26,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:26,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371752669] [2021-02-23 17:53:26,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:26,167 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:26,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:26,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:26,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:26,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:26,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:26,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:26,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:26,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:26,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:26,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:26,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:26,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:26,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:26,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:26,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:26,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:26,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:26,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:26,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:26,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:26,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:26,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:26,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:26,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:26,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:26,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:26,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:26,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:26,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:26,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:26,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:26,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:26,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:26,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:26,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:26,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:26,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:26,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:53:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:26,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:26,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:26,448 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-23 17:53:26,449 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-23 17:53:26,463 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-23 17:53:26,464 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-23 17:53:26,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:26,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:26,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:26,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:26,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:26,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:26,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:26,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:26,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-02-23 17:53:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:26,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:26,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:26,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:26,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:26,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:26,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:26,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:26,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:26,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:26,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:26,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:26,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:26,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:26,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:26,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:26,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:26,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:26,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:53:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:26,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:26,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:26,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:26,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:26,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:26,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:26,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:26,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:26,652 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-02-23 17:53:26,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371752669] [2021-02-23 17:53:26,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:26,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 17:53:26,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577499129] [2021-02-23 17:53:26,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 17:53:26,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:26,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 17:53:26,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-02-23 17:53:26,655 INFO L87 Difference]: Start difference. First operand 102 states and 121 transitions. Second operand 12 states. [2021-02-23 17:53:27,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:27,218 INFO L93 Difference]: Finished difference Result 113 states and 135 transitions. [2021-02-23 17:53:27,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 17:53:27,218 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 183 [2021-02-23 17:53:27,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:27,221 INFO L225 Difference]: With dead ends: 113 [2021-02-23 17:53:27,221 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 17:53:27,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-02-23 17:53:27,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 17:53:27,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 17:53:27,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 17:53:27,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 17:53:27,223 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 183 [2021-02-23 17:53:27,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:27,223 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 17:53:27,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 17:53:27,224 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 17:53:27,224 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 17:53:27,224 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-23 17:53:27,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 17:53:30,047 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2021-02-23 17:53:31,931 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 9 [2021-02-23 17:53:32,362 WARN L202 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 23 [2021-02-23 17:53:32,963 WARN L202 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 32 [2021-02-23 17:53:33,359 WARN L202 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 24 [2021-02-23 17:53:33,619 WARN L202 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 23 [2021-02-23 17:53:33,989 WARN L202 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 25 [2021-02-23 17:53:34,381 WARN L202 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 25 [2021-02-23 17:53:34,659 WARN L202 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 20 [2021-02-23 17:53:34,890 WARN L202 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 26 [2021-02-23 17:53:35,401 WARN L202 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 27 [2021-02-23 17:53:35,668 WARN L202 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 26 [2021-02-23 17:53:36,354 WARN L202 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 30 [2021-02-23 17:53:36,570 WARN L202 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 20 [2021-02-23 17:53:37,099 WARN L202 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 27 [2021-02-23 17:53:37,444 WARN L202 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 30 [2021-02-23 17:53:37,646 WARN L202 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 21 [2021-02-23 17:53:37,788 WARN L202 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 9 [2021-02-23 17:53:38,488 WARN L202 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 30 [2021-02-23 17:53:38,628 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-02-23 17:53:38,628 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-02-23 17:53:38,628 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-02-23 17:53:38,628 INFO L192 CegarLoopUtils]: At program point L4-3(line 4) the Hoare annotation is: true [2021-02-23 17:53:38,628 INFO L192 CegarLoopUtils]: At program point L4-4(line 4) the Hoare annotation is: true [2021-02-23 17:53:38,629 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 17:53:38,629 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 17:53:38,629 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 4) the Hoare annotation is: true [2021-02-23 17:53:38,629 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-23 17:53:38,629 INFO L192 CegarLoopUtils]: At program point L4(line 4) the Hoare annotation is: true [2021-02-23 17:53:38,629 INFO L192 CegarLoopUtils]: At program point L4-1(line 4) the Hoare annotation is: true [2021-02-23 17:53:38,630 INFO L192 CegarLoopUtils]: At program point L4-2(line 4) the Hoare annotation is: true [2021-02-23 17:53:38,630 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-23 17:53:38,630 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-23 17:53:38,630 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 17:53:38,630 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 17:53:38,630 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-23 17:53:38,630 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 41) the Hoare annotation is: false [2021-02-23 17:53:38,630 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 37 44) the Hoare annotation is: true [2021-02-23 17:53:38,631 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 37 44) the Hoare annotation is: (<= 4 main_~x~0) [2021-02-23 17:53:38,631 INFO L185 CegarLoopUtils]: At program point mainFINAL(lines 37 44) the Hoare annotation is: (<= 4 main_~x~0) [2021-02-23 17:53:38,631 INFO L185 CegarLoopUtils]: At program point L41(line 41) the Hoare annotation is: false [2021-02-23 17:53:38,631 INFO L185 CegarLoopUtils]: At program point L40(lines 40 42) the Hoare annotation is: (and (<= 4 main_~x~0) (<= main_~result~0 3) (<= main_~x~0 4) (< 2 main_~result~0)) [2021-02-23 17:53:38,631 INFO L185 CegarLoopUtils]: At program point L41-1(line 41) the Hoare annotation is: false [2021-02-23 17:53:38,631 INFO L185 CegarLoopUtils]: At program point L39(line 39) the Hoare annotation is: (and (<= 4 main_~x~0) (<= main_~x~0 4)) [2021-02-23 17:53:38,631 INFO L185 CegarLoopUtils]: At program point L39-1(line 39) the Hoare annotation is: (and (<= 4 main_~x~0) (<= |main_#t~ret11| 3) (<= main_~x~0 4) (<= 3 |main_#t~ret11|)) [2021-02-23 17:53:38,632 INFO L185 CegarLoopUtils]: At program point L40-2(lines 40 42) the Hoare annotation is: (<= 4 main_~x~0) [2021-02-23 17:53:38,632 INFO L185 CegarLoopUtils]: At program point L39-2(line 39) the Hoare annotation is: (and (<= 4 main_~x~0) (<= |main_#t~ret11| 3) (<= main_~x~0 4) (<= 3 |main_#t~ret11|)) [2021-02-23 17:53:38,632 INFO L185 CegarLoopUtils]: At program point L39-3(line 39) the Hoare annotation is: (and (<= 4 main_~x~0) (<= main_~result~0 3) (<= |main_#t~ret11| 3) (<= main_~x~0 4) (< 2 main_~result~0) (<= 3 |main_#t~ret11|)) [2021-02-23 17:53:38,632 INFO L192 CegarLoopUtils]: At program point fibo2ENTRY(lines 19 27) the Hoare annotation is: true [2021-02-23 17:53:38,632 INFO L185 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (< 1 fibo2_~n)) [2021-02-23 17:53:38,632 INFO L185 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: (and (let ((.cse0 (= fibo2_~n |fibo2_#in~n|))) (or (and (<= |fibo2_#t~ret9| 1) .cse0 (<= 1 |fibo2_#t~ret9|)) (and (<= 3 fibo2_~n) .cse0))) (or (<= fibo2_~n 2) (not (<= |fibo2_#in~n| 3))) (not (<= |fibo2_#in~n| 1))) [2021-02-23 17:53:38,633 INFO L185 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (<= |fibo2_#in~n| 1) (< 0 fibo2_~n)) [2021-02-23 17:53:38,633 INFO L185 CegarLoopUtils]: At program point L25-2(line 25) the Hoare annotation is: (and (let ((.cse0 (= fibo2_~n |fibo2_#in~n|))) (or (and (<= |fibo2_#t~ret9| 1) .cse0 (<= 1 |fibo2_#t~ret9|)) (and (<= 3 fibo2_~n) .cse0))) (or (<= fibo2_~n 2) (not (<= |fibo2_#in~n| 3))) (not (<= |fibo2_#in~n| 1))) [2021-02-23 17:53:38,633 INFO L185 CegarLoopUtils]: At program point L22(lines 22 26) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (< 0 fibo2_~n)) [2021-02-23 17:53:38,633 INFO L185 CegarLoopUtils]: At program point L25-3(line 25) the Hoare annotation is: (and (let ((.cse1 (<= |fibo2_#t~ret9| 1)) (.cse2 (= fibo2_~n |fibo2_#in~n|)) (.cse3 (<= 1 |fibo2_#t~ret9|)) (.cse0 (+ |fibo2_#t~ret9| |fibo2_#t~ret10|))) (or (and (<= 2 .cse0) (<= 3 fibo2_~n) .cse1 .cse2 (<= .cse0 2) .cse3) (and (<= 4 |fibo2_#in~n|) .cse2) (and .cse1 .cse2 (<= fibo2_~n 2) (<= .cse0 1) .cse3 (<= 1 .cse0)))) (not (<= |fibo2_#in~n| 1))) [2021-02-23 17:53:38,633 INFO L185 CegarLoopUtils]: At program point L21(line 21) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (<= |fibo2_#in~n| 0)) [2021-02-23 17:53:38,634 INFO L185 CegarLoopUtils]: At program point L25-4(line 25) the Hoare annotation is: (and (let ((.cse1 (<= |fibo2_#t~ret9| 1)) (.cse2 (= fibo2_~n |fibo2_#in~n|)) (.cse3 (<= 1 |fibo2_#t~ret9|)) (.cse0 (+ |fibo2_#t~ret9| |fibo2_#t~ret10|))) (or (and (<= 2 .cse0) (<= 3 fibo2_~n) .cse1 .cse2 (<= .cse0 2) .cse3) (and (<= 4 |fibo2_#in~n|) .cse2) (and .cse1 .cse2 (<= fibo2_~n 2) (<= .cse0 1) .cse3 (<= 1 .cse0)))) (not (<= |fibo2_#in~n| 1))) [2021-02-23 17:53:38,634 INFO L185 CegarLoopUtils]: At program point L20(lines 20 26) the Hoare annotation is: (= fibo2_~n |fibo2_#in~n|) [2021-02-23 17:53:38,634 INFO L185 CegarLoopUtils]: At program point L25-5(line 25) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (let ((.cse0 (<= |fibo2_#t~ret9| 1)) (.cse1 (+ |fibo2_#t~ret9| |fibo2_#t~ret10|)) (.cse2 (<= 1 |fibo2_#t~ret9|))) (or (and (<= 1 |fibo2_#res|) (<= |fibo2_#res| 1) .cse0 (<= fibo2_~n 2) (<= .cse1 1) .cse2 (<= 1 .cse1)) (not (<= |fibo2_#in~n| 3)) (and (<= 2 .cse1) (<= |fibo2_#res| 2) (<= 3 fibo2_~n) (<= 2 |fibo2_#res|) .cse0 (<= .cse1 2) .cse2))) (not (<= |fibo2_#in~n| 1))) [2021-02-23 17:53:38,634 INFO L185 CegarLoopUtils]: At program point L25-6(line 25) the Hoare annotation is: (and (or (and (<= 1 |fibo2_#res|) (<= |fibo2_#res| 1) (<= fibo2_~n 2)) (and (<= |fibo2_#res| 2) (<= 3 fibo2_~n) (<= 2 |fibo2_#res|)) (not (<= |fibo2_#in~n| 3))) (= fibo2_~n |fibo2_#in~n|) (not (<= |fibo2_#in~n| 1))) [2021-02-23 17:53:38,635 INFO L185 CegarLoopUtils]: At program point fibo2FINAL(lines 19 27) the Hoare annotation is: (and (or (and (<= 1 |fibo2_#res|) (<= |fibo2_#res| 1) (< 0 fibo2_~n)) (and (<= |fibo2_#res| 0) (<= 0 |fibo2_#res|) (<= |fibo2_#in~n| 0)) (not (<= |fibo2_#in~n| 2))) (= fibo2_~n |fibo2_#in~n|) (or (and (<= |fibo2_#res| 2) (<= 2 |fibo2_#res|)) (<= fibo2_~n 2) (not (<= |fibo2_#in~n| 3)))) [2021-02-23 17:53:38,635 INFO L185 CegarLoopUtils]: At program point fibo2EXIT(lines 19 27) the Hoare annotation is: (and (or (and (<= 1 |fibo2_#res|) (<= |fibo2_#res| 1) (< 0 fibo2_~n)) (and (<= |fibo2_#res| 0) (<= 0 |fibo2_#res|) (<= |fibo2_#in~n| 0)) (not (<= |fibo2_#in~n| 2))) (= fibo2_~n |fibo2_#in~n|) (or (and (<= |fibo2_#res| 2) (<= 2 |fibo2_#res|)) (<= fibo2_~n 2) (not (<= |fibo2_#in~n| 3)))) [2021-02-23 17:53:38,635 INFO L192 CegarLoopUtils]: At program point fibo1ENTRY(lines 9 17) the Hoare annotation is: true [2021-02-23 17:53:38,635 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: (and (not (<= |fibo1_#in~n| 2)) (= fibo1_~n |fibo1_#in~n|)) [2021-02-23 17:53:38,635 INFO L185 CegarLoopUtils]: At program point L15-1(line 15) the Hoare annotation is: (and (not (<= |fibo1_#in~n| 2)) (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 4 fibo1_~n) .cse0 (<= |fibo1_#t~ret7| 2) (<= 2 |fibo1_#t~ret7|)) (and (<= 1 |fibo1_#t~ret7|) (<= |fibo1_#t~ret7| 1) .cse0 (<= fibo1_~n 3)) (and (<= 5 fibo1_~n) .cse0)))) [2021-02-23 17:53:38,635 INFO L185 CegarLoopUtils]: At program point L13(line 13) the Hoare annotation is: (and (<= |fibo1_#in~n| 1) (< 0 fibo1_~n) (= fibo1_~n |fibo1_#in~n|)) [2021-02-23 17:53:38,636 INFO L185 CegarLoopUtils]: At program point L15-2(line 15) the Hoare annotation is: (and (not (<= |fibo1_#in~n| 2)) (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 4 fibo1_~n) .cse0 (<= |fibo1_#t~ret7| 2) (<= 2 |fibo1_#t~ret7|)) (and (<= 1 |fibo1_#t~ret7|) (<= |fibo1_#t~ret7| 1) .cse0 (<= fibo1_~n 3)) (and (<= 5 fibo1_~n) .cse0)))) [2021-02-23 17:53:38,636 INFO L185 CegarLoopUtils]: At program point L12(lines 12 16) the Hoare annotation is: (and (< 0 fibo1_~n) (= fibo1_~n |fibo1_#in~n|)) [2021-02-23 17:53:38,636 INFO L185 CegarLoopUtils]: At program point L15-3(line 15) the Hoare annotation is: (let ((.cse1 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 3 fibo1_~n) (or (and (<= 1 |fibo1_#t~ret7|) (<= |fibo1_#t~ret7| 1) (<= fibo1_~n 3)) (let ((.cse0 (+ |fibo1_#t~ret7| |fibo1_#t~ret8|))) (and (<= .cse0 3) (<= 3 .cse0) (<= |fibo1_#t~ret7| 2) (<= 2 |fibo1_#t~ret7|)))) .cse1) (and (<= 5 fibo1_~n) .cse1))) [2021-02-23 17:53:38,636 INFO L185 CegarLoopUtils]: At program point L11(line 11) the Hoare annotation is: (and (<= |fibo1_#in~n| 0) (= fibo1_~n |fibo1_#in~n|)) [2021-02-23 17:53:38,636 INFO L185 CegarLoopUtils]: At program point L15-4(line 15) the Hoare annotation is: (let ((.cse1 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 3 fibo1_~n) (or (and (<= 1 |fibo1_#t~ret7|) (<= |fibo1_#t~ret7| 1) (<= fibo1_~n 3)) (let ((.cse0 (+ |fibo1_#t~ret7| |fibo1_#t~ret8|))) (and (<= .cse0 3) (<= 3 .cse0) (<= |fibo1_#t~ret7| 2) (<= 2 |fibo1_#t~ret7|)))) .cse1) (and (<= 5 fibo1_~n) .cse1))) [2021-02-23 17:53:38,637 INFO L185 CegarLoopUtils]: At program point fibo1FINAL(lines 9 17) the Hoare annotation is: (and (or (and (<= |fibo1_#in~n| 0) (<= 0 |fibo1_#res|) (<= |fibo1_#res| 0)) (and (<= |fibo1_#in~n| 1) (< 0 fibo1_~n) (<= |fibo1_#res| 1) (<= 1 |fibo1_#res|)) (not (<= |fibo1_#in~n| 2))) (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and .cse0 (<= fibo1_~n 3)) (and (<= 5 fibo1_~n) .cse0) (and (<= |fibo1_#res| 3) (<= 3 |fibo1_#res|) .cse0)))) [2021-02-23 17:53:38,637 INFO L185 CegarLoopUtils]: At program point L10(lines 10 16) the Hoare annotation is: (= fibo1_~n |fibo1_#in~n|) [2021-02-23 17:53:38,637 INFO L185 CegarLoopUtils]: At program point L15-5(line 15) the Hoare annotation is: (let ((.cse3 (= fibo1_~n |fibo1_#in~n|))) (let ((.cse2 (<= 2 |fibo1_#t~ret7|)) (.cse0 (and (<= 5 fibo1_~n) .cse3))) (and (or .cse0 (and (<= 3 fibo1_~n) (or (let ((.cse1 (+ |fibo1_#t~ret7| |fibo1_#t~ret8|))) (and (<= |fibo1_#res| 3) (<= .cse1 3) (<= 3 |fibo1_#res|) (<= 3 .cse1) (<= |fibo1_#t~ret7| 2) .cse2)) (and (<= 1 |fibo1_#t~ret7|) (<= |fibo1_#t~ret7| 1))))) (or (and .cse3 .cse2) (and .cse3 (<= fibo1_~n 3)) .cse0)))) [2021-02-23 17:53:38,637 INFO L185 CegarLoopUtils]: At program point L15-6(line 15) the Hoare annotation is: (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 5 fibo1_~n) .cse0) (and (<= 3 fibo1_~n) (or (and (<= 1 |fibo1_#t~ret7|) (<= |fibo1_#t~ret7| 1) (<= fibo1_~n 3)) (and (<= |fibo1_#res| 3) (<= 3 |fibo1_#res|) (<= |fibo1_#t~ret7| 2) (<= 2 |fibo1_#t~ret7|))) .cse0))) [2021-02-23 17:53:38,637 INFO L185 CegarLoopUtils]: At program point fibo1EXIT(lines 9 17) the Hoare annotation is: (and (or (and (<= |fibo1_#in~n| 0) (<= 0 |fibo1_#res|) (<= |fibo1_#res| 0)) (and (<= |fibo1_#in~n| 1) (< 0 fibo1_~n) (<= |fibo1_#res| 1) (<= 1 |fibo1_#res|)) (not (<= |fibo1_#in~n| 2))) (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and .cse0 (<= fibo1_~n 3)) (and (<= 5 fibo1_~n) .cse0) (and (<= |fibo1_#res| 3) (<= 3 |fibo1_#res|) .cse0)))) [2021-02-23 17:53:38,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:53:38 BoogieIcfgContainer [2021-02-23 17:53:38,658 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 17:53:38,659 INFO L168 Benchmark]: Toolchain (without parser) took 26441.95 ms. Allocated memory was 158.3 MB in the beginning and 398.5 MB in the end (delta: 240.1 MB). Free memory was 134.5 MB in the beginning and 146.1 MB in the end (delta: -11.6 MB). Peak memory consumption was 236.1 MB. Max. memory is 8.0 GB. [2021-02-23 17:53:38,659 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 158.3 MB. Free memory is still 132.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:53:38,660 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.88 ms. Allocated memory is still 158.3 MB. Free memory was 133.4 MB in the beginning and 123.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 17:53:38,660 INFO L168 Benchmark]: Boogie Preprocessor took 35.61 ms. Allocated memory is still 158.3 MB. Free memory was 123.9 MB in the beginning and 122.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 17:53:38,660 INFO L168 Benchmark]: RCFGBuilder took 492.27 ms. Allocated memory is still 158.3 MB. Free memory was 122.5 MB in the beginning and 139.3 MB in the end (delta: -16.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. [2021-02-23 17:53:38,660 INFO L168 Benchmark]: TraceAbstraction took 25542.86 ms. Allocated memory was 158.3 MB in the beginning and 398.5 MB in the end (delta: 240.1 MB). Free memory was 138.8 MB in the beginning and 146.1 MB in the end (delta: -7.3 MB). Peak memory consumption was 239.8 MB. Max. memory is 8.0 GB. [2021-02-23 17:53:38,661 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 158.3 MB. Free memory is still 132.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 341.88 ms. Allocated memory is still 158.3 MB. Free memory was 133.4 MB in the beginning and 123.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.61 ms. Allocated memory is still 158.3 MB. Free memory was 123.9 MB in the beginning and 122.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 492.27 ms. Allocated memory is still 158.3 MB. Free memory was 122.5 MB in the beginning and 139.3 MB in the end (delta: -16.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 25542.86 ms. Allocated memory was 158.3 MB in the beginning and 398.5 MB in the end (delta: 240.1 MB). Free memory was 138.8 MB in the beginning and 146.1 MB in the end (delta: -7.3 MB). Peak memory consumption was 239.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 41]: 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: 37]: Procedure Contract for main Derived contract for procedure main: 4 <= x - ProcedureContractResult [Line: 19]: Procedure Contract for fibo2 Derived contract for procedure fibo2: (((((1 <= \result && \result <= 1) && 0 < n) || ((\result <= 0 && 0 <= \result) && \old(n) <= 0)) || !(\old(n) <= 2)) && n == \old(n)) && (((\result <= 2 && 2 <= \result) || n <= 2) || !(\old(n) <= 3)) - ProcedureContractResult [Line: 9]: Procedure Contract for fibo1 Derived contract for procedure fibo1: ((((\old(n) <= 0 && 0 <= \result) && \result <= 0) || (((\old(n) <= 1 && 0 < n) && \result <= 1) && 1 <= \result)) || !(\old(n) <= 2)) && (((n == \old(n) && n <= 3) || (5 <= n && n == \old(n))) || ((\result <= 3 && 3 <= \result) && n == \old(n))) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.0s, OverallIterations: 14, TraceHistogramMax: 10, AutomataDifference: 9.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 11.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 697 SDtfs, 1100 SDslu, 1539 SDs, 0 SdLazy, 4525 SolverSat, 452 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 499 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=141occurred 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: 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 81 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 54 LocationsWithAnnotation, 1622 PreInvPairs, 2895 NumberOfFragments, 936 HoareAnnotationTreeSize, 1622 FomulaSimplifications, 273828 FormulaSimplificationTreeSizeReduction, 4.5s HoareSimplificationTime, 54 FomulaSimplificationsInter, 34213 FormulaSimplificationTreeSizeReductionInter, 6.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...