/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_6-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:26:14,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:26:14,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:26:14,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:26:14,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:26:14,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:26:14,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:26:14,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:26:14,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:26:14,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:26:14,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:26:14,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:26:14,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:26:14,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:26:14,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:26:14,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:26:14,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:26:14,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:26:14,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:26:14,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:26:14,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:26:14,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:26:14,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:26:14,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:26:14,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 20:26:14,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:26:14,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:26:14,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:26:14,567 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:26:14,594 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:26:14,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:26:14,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:26:14,599 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:26:14,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:26:14,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:26:14,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:26:14,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:26:14,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:26:14,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:26:14,603 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:26:14,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:26:14,603 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:26:14,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:26:14,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:26:14,605 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:26:14,605 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:26:14,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:26:14,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:26:14,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:26:14,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:26:14,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:26:14,607 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:26:15,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:26:15,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:26:15,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:26:15,089 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:26:15,090 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:26:15,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c [2021-02-21 20:26:15,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03080cf2e/d4c56787a5e54c6cb1b35e2681c27694/FLAG9a6bad297 [2021-02-21 20:26:15,778 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:26:15,779 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c [2021-02-21 20:26:15,787 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03080cf2e/d4c56787a5e54c6cb1b35e2681c27694/FLAG9a6bad297 [2021-02-21 20:26:16,159 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03080cf2e/d4c56787a5e54c6cb1b35e2681c27694 [2021-02-21 20:26:16,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:26:16,174 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:26:16,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:26:16,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:26:16,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:26:16,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:26:16" (1/1) ... [2021-02-21 20:26:16,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ba7a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:26:16, skipping insertion in model container [2021-02-21 20:26:16,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:26:16" (1/1) ... [2021-02-21 20:26:16,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:26:16,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:26:16,366 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_6-1.c[946,959] [2021-02-21 20:26:16,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:26:16,387 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:26:16,409 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_6-1.c[946,959] [2021-02-21 20:26:16,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:26:16,429 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:26:16,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:26:16 WrapperNode [2021-02-21 20:26:16,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:26:16,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:26:16,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:26:16,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:26:16,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:26:16" (1/1) ... [2021-02-21 20:26:16,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:26:16" (1/1) ... [2021-02-21 20:26:16,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:26:16" (1/1) ... [2021-02-21 20:26:16,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:26:16" (1/1) ... [2021-02-21 20:26:16,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:26:16" (1/1) ... [2021-02-21 20:26:16,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:26:16" (1/1) ... [2021-02-21 20:26:16,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:26:16" (1/1) ... [2021-02-21 20:26:16,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:26:16,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:26:16,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:26:16,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:26:16,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:26:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:26:16,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:26:16,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:26:16,593 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:26:16,594 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2021-02-21 20:26:16,594 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2021-02-21 20:26:16,594 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:26:16,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 20:26:16,595 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:26:16,595 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:26:16,596 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:26:16,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:26:16,596 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2021-02-21 20:26:16,596 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2021-02-21 20:26:16,596 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:26:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:26:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:26:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:26:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:26:16,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:26:16,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:26:17,139 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:26:17,140 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 20:26:17,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:26:17 BoogieIcfgContainer [2021-02-21 20:26:17,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:26:17,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:26:17,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:26:17,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:26:17,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:26:16" (1/3) ... [2021-02-21 20:26:17,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd9d1e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:26:17, skipping insertion in model container [2021-02-21 20:26:17,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:26:16" (2/3) ... [2021-02-21 20:26:17,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd9d1e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:26:17, skipping insertion in model container [2021-02-21 20:26:17,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:26:17" (3/3) ... [2021-02-21 20:26:17,153 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2021-02-21 20:26:17,162 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:26:17,168 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:26:17,190 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:26:17,222 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:26:17,222 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:26:17,223 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:26:17,223 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:26:17,223 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:26:17,223 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:26:17,224 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:26:17,224 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:26:17,243 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2021-02-21 20:26:17,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-21 20:26:17,257 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:26:17,259 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] [2021-02-21 20:26:17,259 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:26:17,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:26:17,268 INFO L82 PathProgramCache]: Analyzing trace with hash 2042570277, now seen corresponding path program 1 times [2021-02-21 20:26:17,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:26:17,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294978787] [2021-02-21 20:26:17,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:26:17,380 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:26:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:17,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:17,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:17,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:17,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:17,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:17,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:17,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:26:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:17,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:17,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:17,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:26:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:17,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:17,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:17,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:17,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:17,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:26:17,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294978787] [2021-02-21 20:26:17,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:26:17,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 20:26:17,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421005433] [2021-02-21 20:26:17,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 20:26:17,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:26:17,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 20:26:17,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:26:17,799 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 6 states. [2021-02-21 20:26:18,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:26:18,213 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2021-02-21 20:26:18,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 20:26:18,215 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-02-21 20:26:18,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:26:18,227 INFO L225 Difference]: With dead ends: 67 [2021-02-21 20:26:18,227 INFO L226 Difference]: Without dead ends: 50 [2021-02-21 20:26:18,231 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 [2021-02-21 20:26:18,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-02-21 20:26:18,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-02-21 20:26:18,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-02-21 20:26:18,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2021-02-21 20:26:18,297 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 24 [2021-02-21 20:26:18,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:26:18,298 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2021-02-21 20:26:18,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 20:26:18,298 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2021-02-21 20:26:18,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-21 20:26:18,300 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:26:18,301 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] [2021-02-21 20:26:18,301 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:26:18,301 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:26:18,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:26:18,302 INFO L82 PathProgramCache]: Analyzing trace with hash -589714176, now seen corresponding path program 1 times [2021-02-21 20:26:18,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:26:18,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056916796] [2021-02-21 20:26:18,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:26:18,306 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:26:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:18,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:18,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:18,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:18,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:18,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:18,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:18,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:26:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:18,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:18,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:18,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:26:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:18,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:18,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:18,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:18,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:18,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:26:18,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056916796] [2021-02-21 20:26:18,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:26:18,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 20:26:18,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701706937] [2021-02-21 20:26:18,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 20:26:18,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:26:18,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 20:26:18,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:26:18,460 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 6 states. [2021-02-21 20:26:18,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:26:18,763 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2021-02-21 20:26:18,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 20:26:18,764 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2021-02-21 20:26:18,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:26:18,766 INFO L225 Difference]: With dead ends: 58 [2021-02-21 20:26:18,767 INFO L226 Difference]: Without dead ends: 52 [2021-02-21 20:26:18,769 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 [2021-02-21 20:26:18,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-21 20:26:18,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2021-02-21 20:26:18,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-02-21 20:26:18,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2021-02-21 20:26:18,790 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 25 [2021-02-21 20:26:18,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:26:18,791 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2021-02-21 20:26:18,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 20:26:18,791 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2021-02-21 20:26:18,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-21 20:26:18,793 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:26:18,794 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] [2021-02-21 20:26:18,794 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:26:18,794 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:26:18,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:26:18,795 INFO L82 PathProgramCache]: Analyzing trace with hash -374229603, now seen corresponding path program 1 times [2021-02-21 20:26:18,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:26:18,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710718091] [2021-02-21 20:26:18,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:26:18,800 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:26:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:18,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:18,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:18,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:18,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:18,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:26:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:18,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:18,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:18,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:26:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:19,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:19,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:19,017 WARN L141 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size [2021-02-21 20:26:19,019 WARN L147 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size 3 [2021-02-21 20:26:19,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:19,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:26:19,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:19,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:19,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:19,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:19,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:19,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:19,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:19,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:19,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:19,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-02-21 20:26:19,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:19,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:19,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:19,116 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-21 20:26:19,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710718091] [2021-02-21 20:26:19,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:26:19,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 20:26:19,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997155324] [2021-02-21 20:26:19,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 20:26:19,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:26:19,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 20:26:19,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-21 20:26:19,120 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 7 states. [2021-02-21 20:26:19,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:26:19,489 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2021-02-21 20:26:19,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 20:26:19,490 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2021-02-21 20:26:19,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:26:19,497 INFO L225 Difference]: With dead ends: 90 [2021-02-21 20:26:19,499 INFO L226 Difference]: Without dead ends: 54 [2021-02-21 20:26:19,503 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 [2021-02-21 20:26:19,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-02-21 20:26:19,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2021-02-21 20:26:19,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-02-21 20:26:19,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2021-02-21 20:26:19,543 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 41 [2021-02-21 20:26:19,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:26:19,544 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2021-02-21 20:26:19,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 20:26:19,545 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2021-02-21 20:26:19,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-21 20:26:19,550 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:26:19,550 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] [2021-02-21 20:26:19,551 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 20:26:19,551 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:26:19,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:26:19,552 INFO L82 PathProgramCache]: Analyzing trace with hash -245289899, now seen corresponding path program 1 times [2021-02-21 20:26:19,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:26:19,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781469505] [2021-02-21 20:26:19,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:26:19,559 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:26:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:19,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:19,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:19,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:19,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:19,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:19,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:19,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:26:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:19,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:19,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:19,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:26:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:19,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:19,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:19,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:19,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:19,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:19,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:19,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:19,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:19,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:19,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:19,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:19,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:19,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:19,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:19,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-21 20:26:19,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781469505] [2021-02-21 20:26:19,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:26:19,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 20:26:19,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368311390] [2021-02-21 20:26:19,769 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 20:26:19,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:26:19,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 20:26:19,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-21 20:26:19,770 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 9 states. [2021-02-21 20:26:20,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:26:20,377 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2021-02-21 20:26:20,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 20:26:20,385 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2021-02-21 20:26:20,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:26:20,389 INFO L225 Difference]: With dead ends: 82 [2021-02-21 20:26:20,389 INFO L226 Difference]: Without dead ends: 76 [2021-02-21 20:26:20,390 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 [2021-02-21 20:26:20,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-02-21 20:26:20,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2021-02-21 20:26:20,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-02-21 20:26:20,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2021-02-21 20:26:20,429 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 42 [2021-02-21 20:26:20,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:26:20,430 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2021-02-21 20:26:20,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 20:26:20,431 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2021-02-21 20:26:20,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-21 20:26:20,441 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:26:20,441 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] [2021-02-21 20:26:20,442 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 20:26:20,442 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:26:20,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:26:20,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1853062104, now seen corresponding path program 1 times [2021-02-21 20:26:20,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:26:20,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730364045] [2021-02-21 20:26:20,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:26:20,448 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:26:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:20,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:20,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:20,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:20,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:20,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:26:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:20,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:20,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:20,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:26:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:20,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:20,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:20,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:20,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:20,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:20,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:20,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:20,652 WARN L141 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size [2021-02-21 20:26:20,653 WARN L147 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size 3 [2021-02-21 20:26:20,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:20,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:26:20,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:20,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:20,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:20,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:20,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:20,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:20,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:20,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:20,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:20,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-02-21 20:26:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:20,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:20,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:20,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-21 20:26:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:20,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:20,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:20,741 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-02-21 20:26:20,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730364045] [2021-02-21 20:26:20,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:26:20,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 20:26:20,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099598912] [2021-02-21 20:26:20,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 20:26:20,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:26:20,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 20:26:20,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-21 20:26:20,745 INFO L87 Difference]: Start difference. First operand 74 states and 91 transitions. Second operand 7 states. [2021-02-21 20:26:21,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:26:21,105 INFO L93 Difference]: Finished difference Result 138 states and 186 transitions. [2021-02-21 20:26:21,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 20:26:21,106 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2021-02-21 20:26:21,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:26:21,108 INFO L225 Difference]: With dead ends: 138 [2021-02-21 20:26:21,108 INFO L226 Difference]: Without dead ends: 78 [2021-02-21 20:26:21,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-02-21 20:26:21,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-02-21 20:26:21,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-02-21 20:26:21,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-21 20:26:21,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 97 transitions. [2021-02-21 20:26:21,131 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 97 transitions. Word has length 58 [2021-02-21 20:26:21,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:26:21,132 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 97 transitions. [2021-02-21 20:26:21,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 20:26:21,132 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 97 transitions. [2021-02-21 20:26:21,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-02-21 20:26:21,134 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:26:21,134 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] [2021-02-21 20:26:21,134 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 20:26:21,135 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:26:21,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:26:21,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1662933173, now seen corresponding path program 1 times [2021-02-21 20:26:21,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:26:21,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657314342] [2021-02-21 20:26:21,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:26:21,138 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:26:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:21,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:21,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:21,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:21,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:21,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:26:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:21,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:21,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:21,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:26:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:21,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:21,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:21,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:21,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:21,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:21,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:21,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:21,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:21,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:21,248 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-21 20:26:21,249 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-21 20:26:21,260 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-21 20:26:21,260 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-21 20:26:21,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:21,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:21,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:21,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:21,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:21,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:21,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:21,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:21,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:21,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:21,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:21,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:21,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:21,317 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-02-21 20:26:21,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657314342] [2021-02-21 20:26:21,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:26:21,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 20:26:21,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124651627] [2021-02-21 20:26:21,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 20:26:21,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:26:21,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 20:26:21,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-02-21 20:26:21,320 INFO L87 Difference]: Start difference. First operand 78 states and 97 transitions. Second operand 9 states. [2021-02-21 20:26:21,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:26:21,752 INFO L93 Difference]: Finished difference Result 150 states and 205 transitions. [2021-02-21 20:26:21,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-21 20:26:21,752 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2021-02-21 20:26:21,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:26:21,754 INFO L225 Difference]: With dead ends: 150 [2021-02-21 20:26:21,755 INFO L226 Difference]: Without dead ends: 86 [2021-02-21 20:26:21,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-02-21 20:26:21,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-02-21 20:26:21,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2021-02-21 20:26:21,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-02-21 20:26:21,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2021-02-21 20:26:21,813 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 59 [2021-02-21 20:26:21,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:26:21,813 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2021-02-21 20:26:21,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 20:26:21,814 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2021-02-21 20:26:21,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-02-21 20:26:21,818 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:26:21,818 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] [2021-02-21 20:26:21,818 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 20:26:21,818 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:26:21,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:26:21,819 INFO L82 PathProgramCache]: Analyzing trace with hash -702082707, now seen corresponding path program 1 times [2021-02-21 20:26:21,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:26:21,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94337806] [2021-02-21 20:26:21,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:26:21,823 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:26:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:21,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:21,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:21,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:21,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:21,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:21,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:21,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:26:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:21,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:21,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:21,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:26:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:21,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:21,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:21,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:21,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:21,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:21,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:22,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:22,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:22,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:22,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:22,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:22,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:22,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:22,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:22,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:22,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:22,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:22,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:22,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:22,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:22,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:22,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:22,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:22,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:22,100 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-02-21 20:26:22,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94337806] [2021-02-21 20:26:22,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:26:22,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 20:26:22,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466161406] [2021-02-21 20:26:22,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 20:26:22,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:26:22,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 20:26:22,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-02-21 20:26:22,110 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand 11 states. [2021-02-21 20:26:22,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:26:22,832 INFO L93 Difference]: Finished difference Result 126 states and 166 transitions. [2021-02-21 20:26:22,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 20:26:22,833 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2021-02-21 20:26:22,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:26:22,835 INFO L225 Difference]: With dead ends: 126 [2021-02-21 20:26:22,836 INFO L226 Difference]: Without dead ends: 120 [2021-02-21 20:26:22,837 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 [2021-02-21 20:26:22,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-02-21 20:26:22,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 114. [2021-02-21 20:26:22,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2021-02-21 20:26:22,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 153 transitions. [2021-02-21 20:26:22,873 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 153 transitions. Word has length 60 [2021-02-21 20:26:22,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:26:22,874 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 153 transitions. [2021-02-21 20:26:22,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 20:26:22,874 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 153 transitions. [2021-02-21 20:26:22,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-02-21 20:26:22,876 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:26:22,876 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] [2021-02-21 20:26:22,877 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 20:26:22,877 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:26:22,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:26:22,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1046643654, now seen corresponding path program 1 times [2021-02-21 20:26:22,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:26:22,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804577420] [2021-02-21 20:26:22,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:26:22,881 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:26:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:22,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:22,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:22,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:22,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:22,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:22,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:22,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:26:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:22,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:22,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:22,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:26:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:22,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:22,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:22,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:22,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:22,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:22,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:22,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:22,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:22,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:22,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:22,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:22,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:22,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:22,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:23,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:23,008 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-21 20:26:23,009 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-21 20:26:23,018 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-21 20:26:23,019 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-21 20:26:23,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:23,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:23,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:23,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:23,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:23,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:23,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:23,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:23,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:23,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:23,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:23,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:23,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:23,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-02-21 20:26:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:23,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:23,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:23,087 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-02-21 20:26:23,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804577420] [2021-02-21 20:26:23,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:26:23,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 20:26:23,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562393082] [2021-02-21 20:26:23,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 20:26:23,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:26:23,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 20:26:23,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-02-21 20:26:23,089 INFO L87 Difference]: Start difference. First operand 114 states and 153 transitions. Second operand 10 states. [2021-02-21 20:26:23,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:26:23,614 INFO L93 Difference]: Finished difference Result 235 states and 356 transitions. [2021-02-21 20:26:23,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 20:26:23,614 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2021-02-21 20:26:23,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:26:23,617 INFO L225 Difference]: With dead ends: 235 [2021-02-21 20:26:23,617 INFO L226 Difference]: Without dead ends: 135 [2021-02-21 20:26:23,619 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 [2021-02-21 20:26:23,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-02-21 20:26:23,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 123. [2021-02-21 20:26:23,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2021-02-21 20:26:23,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 169 transitions. [2021-02-21 20:26:23,654 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 169 transitions. Word has length 77 [2021-02-21 20:26:23,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:26:23,655 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 169 transitions. [2021-02-21 20:26:23,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 20:26:23,655 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 169 transitions. [2021-02-21 20:26:23,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-02-21 20:26:23,657 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:26:23,657 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] [2021-02-21 20:26:23,658 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 20:26:23,658 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:26:23,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:26:23,659 INFO L82 PathProgramCache]: Analyzing trace with hash 549553181, now seen corresponding path program 1 times [2021-02-21 20:26:23,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:26:23,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913407972] [2021-02-21 20:26:23,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:26:23,662 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:26:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:23,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:23,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:23,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:23,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:23,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:26:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:23,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:23,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:23,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:26:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:23,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:23,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:23,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:23,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:23,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:23,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:23,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:23,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:23,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:23,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:23,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:23,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:23,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:23,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:23,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:23,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:23,824 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-21 20:26:23,824 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-21 20:26:23,837 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-21 20:26:23,838 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-21 20:26:23,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:23,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:23,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:23,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:23,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:23,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:23,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:23,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:23,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:23,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:23,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:23,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:23,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-21 20:26:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:23,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:23,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:23,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:23,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-02-21 20:26:23,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913407972] [2021-02-21 20:26:23,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:26:23,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-21 20:26:23,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716236588] [2021-02-21 20:26:23,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-21 20:26:23,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:26:23,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-21 20:26:23,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-02-21 20:26:23,918 INFO L87 Difference]: Start difference. First operand 123 states and 169 transitions. Second operand 12 states. [2021-02-21 20:26:24,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:26:24,624 INFO L93 Difference]: Finished difference Result 265 states and 408 transitions. [2021-02-21 20:26:24,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 20:26:24,625 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2021-02-21 20:26:24,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:26:24,628 INFO L225 Difference]: With dead ends: 265 [2021-02-21 20:26:24,629 INFO L226 Difference]: Without dead ends: 159 [2021-02-21 20:26:24,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-02-21 20:26:24,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-02-21 20:26:24,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 141. [2021-02-21 20:26:24,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2021-02-21 20:26:24,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 199 transitions. [2021-02-21 20:26:24,671 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 199 transitions. Word has length 78 [2021-02-21 20:26:24,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:26:24,672 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 199 transitions. [2021-02-21 20:26:24,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-21 20:26:24,672 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 199 transitions. [2021-02-21 20:26:24,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-02-21 20:26:24,675 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:26:24,676 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] [2021-02-21 20:26:24,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 20:26:24,676 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:26:24,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:26:24,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1728392861, now seen corresponding path program 2 times [2021-02-21 20:26:24,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:26:24,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827134680] [2021-02-21 20:26:24,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:26:24,680 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:26:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:24,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:24,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:24,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:24,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:24,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:24,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:24,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:26:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:24,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:24,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:24,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:26:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:24,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:24,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:24,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:24,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:24,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:24,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:24,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:24,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:24,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:24,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:24,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:24,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:24,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:24,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:24,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:24,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:24,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:24,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:24,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:24,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:24,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:24,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:24,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:24,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:24,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:24,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:24,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:24,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:24,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:24,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:24,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:24,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-21 20:26:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:24,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:24,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:24,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:24,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:24,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:24,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:24,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:24,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:24,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:24,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:24,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:24,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:24,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:24,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:24,986 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-02-21 20:26:24,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827134680] [2021-02-21 20:26:24,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:26:24,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-21 20:26:24,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528870005] [2021-02-21 20:26:24,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-21 20:26:24,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:26:24,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-21 20:26:24,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-02-21 20:26:24,989 INFO L87 Difference]: Start difference. First operand 141 states and 199 transitions. Second operand 13 states. [2021-02-21 20:26:25,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:26:25,775 INFO L93 Difference]: Finished difference Result 221 states and 323 transitions. [2021-02-21 20:26:25,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-21 20:26:25,776 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 113 [2021-02-21 20:26:25,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:26:25,781 INFO L225 Difference]: With dead ends: 221 [2021-02-21 20:26:25,781 INFO L226 Difference]: Without dead ends: 215 [2021-02-21 20:26:25,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2021-02-21 20:26:25,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-02-21 20:26:25,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 209. [2021-02-21 20:26:25,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2021-02-21 20:26:25,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 310 transitions. [2021-02-21 20:26:25,832 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 310 transitions. Word has length 113 [2021-02-21 20:26:25,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:26:25,833 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 310 transitions. [2021-02-21 20:26:25,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-21 20:26:25,833 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 310 transitions. [2021-02-21 20:26:25,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-02-21 20:26:25,838 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:26:25,838 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-02-21 20:26:25,838 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 20:26:25,839 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:26:25,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:26:25,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1860651107, now seen corresponding path program 2 times [2021-02-21 20:26:25,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:26:25,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284580219] [2021-02-21 20:26:25,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:26:25,843 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:26:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:25,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:25,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:25,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:25,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:25,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:26:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:25,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:25,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:25,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:26:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:25,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:25,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:25,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:25,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:25,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:25,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:25,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:25,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:25,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:25,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:25,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:25,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:26,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:26,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:26,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:26,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:26,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:26,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:26,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:26,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:26,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:26,061 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-21 20:26:26,062 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-21 20:26:26,075 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-21 20:26:26,076 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-21 20:26:26,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:26,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:26,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:26,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:26,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:26,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:26,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:26,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:26,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:26,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:26,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:26,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:26,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-21 20:26:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:26,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:26,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:26,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:26,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:26,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-21 20:26:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:26,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:26,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:26,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:26,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:26,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:26,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:26,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:26,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:26,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:26,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:26,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:26,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:26,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:26,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:26,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:26,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:26,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:26,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:26,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-21 20:26:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:26,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:26,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:26,254 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 9 proven. 51 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-02-21 20:26:26,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284580219] [2021-02-21 20:26:26,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:26:26,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-21 20:26:26,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090547481] [2021-02-21 20:26:26,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-21 20:26:26,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:26:26,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-21 20:26:26,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-02-21 20:26:26,257 INFO L87 Difference]: Start difference. First operand 209 states and 310 transitions. Second operand 12 states. [2021-02-21 20:26:26,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:26:26,875 INFO L93 Difference]: Finished difference Result 453 states and 766 transitions. [2021-02-21 20:26:26,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 20:26:26,875 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 149 [2021-02-21 20:26:26,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:26:26,881 INFO L225 Difference]: With dead ends: 453 [2021-02-21 20:26:26,881 INFO L226 Difference]: Without dead ends: 261 [2021-02-21 20:26:26,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-02-21 20:26:26,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-02-21 20:26:26,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 231. [2021-02-21 20:26:26,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2021-02-21 20:26:26,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 358 transitions. [2021-02-21 20:26:26,948 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 358 transitions. Word has length 149 [2021-02-21 20:26:26,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:26:26,949 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 358 transitions. [2021-02-21 20:26:26,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-21 20:26:26,949 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 358 transitions. [2021-02-21 20:26:26,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-02-21 20:26:26,956 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:26:26,956 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:26:26,957 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-21 20:26:26,957 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:26:26,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:26:26,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1495354256, now seen corresponding path program 1 times [2021-02-21 20:26:26,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:26:26,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103291650] [2021-02-21 20:26:26,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:26:26,962 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:26:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:27,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:27,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:27,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:27,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:26:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:27,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:27,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:26:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:27,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:27,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:27,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:27,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:27,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:27,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:27,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:27,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:27,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:27,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:27,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:27,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:27,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:27,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:27,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:27,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:27,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:27,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:27,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:27,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:27,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:27,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:27,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:27,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-21 20:26:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:27,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:27,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:27,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:27,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:27,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:27,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:27,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:27,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:27,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:27,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:27,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-02-21 20:26:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:27,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:27,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:27,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:27,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:27,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:27,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:27,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:27,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:27,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:27,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:27,422 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-02-21 20:26:27,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103291650] [2021-02-21 20:26:27,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:26:27,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-21 20:26:27,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996922072] [2021-02-21 20:26:27,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-21 20:26:27,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:26:27,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-21 20:26:27,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-02-21 20:26:27,425 INFO L87 Difference]: Start difference. First operand 231 states and 358 transitions. Second operand 15 states. [2021-02-21 20:26:28,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:26:28,385 INFO L93 Difference]: Finished difference Result 357 states and 569 transitions. [2021-02-21 20:26:28,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 20:26:28,385 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 166 [2021-02-21 20:26:28,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:26:28,398 INFO L225 Difference]: With dead ends: 357 [2021-02-21 20:26:28,398 INFO L226 Difference]: Without dead ends: 351 [2021-02-21 20:26:28,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2021-02-21 20:26:28,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-02-21 20:26:28,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 339. [2021-02-21 20:26:28,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2021-02-21 20:26:28,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 549 transitions. [2021-02-21 20:26:28,484 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 549 transitions. Word has length 166 [2021-02-21 20:26:28,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:26:28,484 INFO L480 AbstractCegarLoop]: Abstraction has 339 states and 549 transitions. [2021-02-21 20:26:28,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-21 20:26:28,485 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 549 transitions. [2021-02-21 20:26:28,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-02-21 20:26:28,493 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:26:28,493 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 12, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:26:28,493 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-21 20:26:28,494 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:26:28,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:26:28,494 INFO L82 PathProgramCache]: Analyzing trace with hash 645002235, now seen corresponding path program 2 times [2021-02-21 20:26:28,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:26:28,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709676360] [2021-02-21 20:26:28,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:26:28,498 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:26:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:28,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:28,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:28,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:28,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:28,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:28,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:28,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:26:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:28,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:28,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:28,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:26:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:28,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:28,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:28,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:28,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:28,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:28,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:28,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:28,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:28,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:28,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:28,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:28,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:28,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:28,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:28,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:28,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:28,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:28,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:28,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:28,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:28,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:28,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:28,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:28,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:28,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:28,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:28,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:28,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:28,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:28,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:28,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:28,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-21 20:26:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:28,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:28,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:28,830 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-21 20:26:28,830 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-21 20:26:28,844 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-21 20:26:28,845 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-21 20:26:28,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:28,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:28,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:28,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:28,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:28,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:28,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:28,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:28,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-02-21 20:26:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:28,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:28,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:28,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:28,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:28,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:28,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:28,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:28,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:28,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:28,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:28,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:28,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:28,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:28,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:28,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-02-21 20:26:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:29,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:29,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:29,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:29,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:29,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:29,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:29,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:29,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:29,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:29,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:29,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:29,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:29,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:29,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:29,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:29,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:29,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:29,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:29,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:29,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:29,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-21 20:26:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:29,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:29,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:29,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:29,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:29,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:29,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:29,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:29,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:29,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-02-21 20:26:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:29,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:29,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:29,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:29,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:29,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:29,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:29,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:29,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:29,289 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2021-02-21 20:26:29,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709676360] [2021-02-21 20:26:29,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:26:29,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 20:26:29,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172385942] [2021-02-21 20:26:29,291 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 20:26:29,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:26:29,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 20:26:29,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-02-21 20:26:29,292 INFO L87 Difference]: Start difference. First operand 339 states and 549 transitions. Second operand 14 states. [2021-02-21 20:26:30,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:26:30,309 INFO L93 Difference]: Finished difference Result 764 states and 1449 transitions. [2021-02-21 20:26:30,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 20:26:30,310 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 255 [2021-02-21 20:26:30,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:26:30,320 INFO L225 Difference]: With dead ends: 764 [2021-02-21 20:26:30,320 INFO L226 Difference]: Without dead ends: 441 [2021-02-21 20:26:30,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2021-02-21 20:26:30,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-02-21 20:26:30,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 429. [2021-02-21 20:26:30,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2021-02-21 20:26:30,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 720 transitions. [2021-02-21 20:26:30,427 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 720 transitions. Word has length 255 [2021-02-21 20:26:30,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:26:30,428 INFO L480 AbstractCegarLoop]: Abstraction has 429 states and 720 transitions. [2021-02-21 20:26:30,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 20:26:30,428 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 720 transitions. [2021-02-21 20:26:30,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-02-21 20:26:30,438 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:26:30,438 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 12, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:26:30,438 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-21 20:26:30,439 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:26:30,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:26:30,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1724786950, now seen corresponding path program 3 times [2021-02-21 20:26:30,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:26:30,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314071418] [2021-02-21 20:26:30,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:26:30,443 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:26:30,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:30,508 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:30,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:30,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:30,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:26:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:30,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:30,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:26:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:30,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:30,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:30,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:30,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:30,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:30,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:30,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:30,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:30,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:30,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:30,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:30,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:30,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:30,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:30,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:30,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:30,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:30,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:30,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:30,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:30,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:30,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-21 20:26:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:30,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:30,760 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-21 20:26:30,761 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-21 20:26:30,778 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-21 20:26:30,779 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-21 20:26:30,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:30,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:30,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:30,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:30,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:30,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-02-21 20:26:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:30,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:30,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:30,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:30,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:30,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:30,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:30,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:30,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:30,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:30,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 20:26:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:30,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:30,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:30,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:30,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:30,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:30,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:30,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:30,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:30,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:30,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:30,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:30,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:30,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:30,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:30,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:30,989 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-21 20:26:30,990 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-21 20:26:31,009 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-21 20:26:31,010 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-21 20:26:31,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:31,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:31,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:31,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:31,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:31,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:31,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:31,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:31,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:31,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:31,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:31,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:31,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:31,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:31,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:31,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:31,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:31,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:31,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:31,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:31,210 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 36 proven. 19 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-02-21 20:26:31,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314071418] [2021-02-21 20:26:31,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:26:31,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-02-21 20:26:31,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444432614] [2021-02-21 20:26:31,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-21 20:26:31,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:26:31,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-21 20:26:31,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-02-21 20:26:31,213 INFO L87 Difference]: Start difference. First operand 429 states and 720 transitions. Second operand 20 states. [2021-02-21 20:26:33,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:26:33,121 INFO L93 Difference]: Finished difference Result 926 states and 1669 transitions. [2021-02-21 20:26:33,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-21 20:26:33,122 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 254 [2021-02-21 20:26:33,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:26:33,132 INFO L225 Difference]: With dead ends: 926 [2021-02-21 20:26:33,132 INFO L226 Difference]: Without dead ends: 505 [2021-02-21 20:26:33,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=219, Invalid=1341, Unknown=0, NotChecked=0, Total=1560 [2021-02-21 20:26:33,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-02-21 20:26:33,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 436. [2021-02-21 20:26:33,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2021-02-21 20:26:33,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 643 transitions. [2021-02-21 20:26:33,241 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 643 transitions. Word has length 254 [2021-02-21 20:26:33,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:26:33,241 INFO L480 AbstractCegarLoop]: Abstraction has 436 states and 643 transitions. [2021-02-21 20:26:33,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-21 20:26:33,242 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 643 transitions. [2021-02-21 20:26:33,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-02-21 20:26:33,251 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:26:33,251 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 14, 12, 12, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:26:33,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-21 20:26:33,252 INFO L428 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:26:33,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:26:33,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1516358539, now seen corresponding path program 4 times [2021-02-21 20:26:33,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:26:33,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674219627] [2021-02-21 20:26:33,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:26:33,259 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:26:33,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:33,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:33,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:33,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:33,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:26:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:33,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:33,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:26:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:33,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:33,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:33,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:33,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:33,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:33,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:33,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:33,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:33,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:33,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:33,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:33,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:33,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:33,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:33,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:33,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:33,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:33,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:33,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:33,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:33,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:33,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:33,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:33,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:33,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:33,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-21 20:26:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:33,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:33,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:33,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:33,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:33,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:33,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-02-21 20:26:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:33,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:33,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:33,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:33,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:33,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:33,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:33,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:33,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:33,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:33,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:33,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:33,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:33,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:33,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:33,837 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-21 20:26:33,837 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-21 20:26:33,854 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-21 20:26:33,854 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-21 20:26:33,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:33,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:33,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:33,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:33,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:33,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-02-21 20:26:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:33,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:33,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:33,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:33,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:33,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:33,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:33,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:33,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:33,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:33,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:33,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:33,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:33,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:33,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:33,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:33,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:33,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-02-21 20:26:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:34,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:34,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:34,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:34,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:34,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:34,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:34,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:34,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:34,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:34,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:34,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:34,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:34,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:34,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:34,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:34,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:34,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:34,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:34,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:34,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:34,326 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 32 proven. 135 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2021-02-21 20:26:34,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674219627] [2021-02-21 20:26:34,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:26:34,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-02-21 20:26:34,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872523873] [2021-02-21 20:26:34,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-21 20:26:34,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:26:34,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-21 20:26:34,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2021-02-21 20:26:34,331 INFO L87 Difference]: Start difference. First operand 436 states and 643 transitions. Second operand 21 states. [2021-02-21 20:26:36,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:26:36,173 INFO L93 Difference]: Finished difference Result 761 states and 1201 transitions. [2021-02-21 20:26:36,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-21 20:26:36,174 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 305 [2021-02-21 20:26:36,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:26:36,182 INFO L225 Difference]: With dead ends: 761 [2021-02-21 20:26:36,182 INFO L226 Difference]: Without dead ends: 330 [2021-02-21 20:26:36,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=315, Invalid=1665, Unknown=0, NotChecked=0, Total=1980 [2021-02-21 20:26:36,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-02-21 20:26:36,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 302. [2021-02-21 20:26:36,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2021-02-21 20:26:36,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 415 transitions. [2021-02-21 20:26:36,258 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 415 transitions. Word has length 305 [2021-02-21 20:26:36,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:26:36,258 INFO L480 AbstractCegarLoop]: Abstraction has 302 states and 415 transitions. [2021-02-21 20:26:36,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-02-21 20:26:36,258 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 415 transitions. [2021-02-21 20:26:36,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-02-21 20:26:36,266 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:26:36,266 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 14, 14, 13, 12, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:26:36,267 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-21 20:26:36,267 INFO L428 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:26:36,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:26:36,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1543557443, now seen corresponding path program 5 times [2021-02-21 20:26:36,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:26:36,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517685102] [2021-02-21 20:26:36,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:26:36,273 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:26:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:36,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:36,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:36,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:26:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:36,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:26:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:36,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:36,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:36,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:36,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:36,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:36,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:36,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:36,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:36,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:36,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:36,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:36,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:36,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:36,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:36,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:36,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:36,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:36,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:36,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:36,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-21 20:26:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:36,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:36,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:36,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-02-21 20:26:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:36,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:36,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:36,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:36,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:36,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-21 20:26:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:36,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:36,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:36,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:36,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:36,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:36,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:36,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:36,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:36,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:36,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-21 20:26:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:36,887 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-21 20:26:36,887 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-21 20:26:36,908 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-21 20:26:36,910 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-21 20:26:36,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:36,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:36,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:36,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-02-21 20:26:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:36,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:36,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:36,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:36,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:36,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:36,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:37,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:37,260 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 22 proven. 73 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-02-21 20:26:37,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517685102] [2021-02-21 20:26:37,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:26:37,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-02-21 20:26:37,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011402410] [2021-02-21 20:26:37,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-21 20:26:37,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:26:37,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-21 20:26:37,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2021-02-21 20:26:37,263 INFO L87 Difference]: Start difference. First operand 302 states and 415 transitions. Second operand 22 states. [2021-02-21 20:26:39,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:26:39,325 INFO L93 Difference]: Finished difference Result 563 states and 823 transitions. [2021-02-21 20:26:39,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-02-21 20:26:39,326 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 289 [2021-02-21 20:26:39,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:26:39,331 INFO L225 Difference]: With dead ends: 563 [2021-02-21 20:26:39,331 INFO L226 Difference]: Without dead ends: 227 [2021-02-21 20:26:39,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=351, Invalid=2099, Unknown=0, NotChecked=0, Total=2450 [2021-02-21 20:26:39,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-02-21 20:26:39,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 185. [2021-02-21 20:26:39,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2021-02-21 20:26:39,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 238 transitions. [2021-02-21 20:26:39,374 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 238 transitions. Word has length 289 [2021-02-21 20:26:39,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:26:39,374 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 238 transitions. [2021-02-21 20:26:39,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-21 20:26:39,375 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 238 transitions. [2021-02-21 20:26:39,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-02-21 20:26:39,379 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:26:39,379 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:26:39,379 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-21 20:26:39,380 INFO L428 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:26:39,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:26:39,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1494784877, now seen corresponding path program 6 times [2021-02-21 20:26:39,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:26:39,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114285897] [2021-02-21 20:26:39,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:26:39,383 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:26:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:39,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:39,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:39,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:39,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:39,462 WARN L141 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-02-21 20:26:39,463 WARN L147 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size 7 [2021-02-21 20:26:39,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:39,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:39,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:26:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:39,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:39,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:39,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:26:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:39,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:39,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:39,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:39,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:39,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:39,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:26:39,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:39,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:39,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:39,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:39,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:39,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:39,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:39,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:39,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:26:39,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:39,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:39,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:39,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:39,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:39,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:39,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:39,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:39,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:26:39,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:39,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:39,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:39,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:39,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:39,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:39,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:39,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:39,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:26:39,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:39,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:39,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:39,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:39,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:39,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:39,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:39,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:39,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:26:39,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:39,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:40,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:40,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:40,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:40,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:40,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:40,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:40,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:40,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:40,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:40,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:40,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-21 20:26:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:40,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:40,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:40,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:26:40,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:40,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:40,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:40,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:40,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:40,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:40,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:40,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-02-21 20:26:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:40,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:40,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:40,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:26:40,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:40,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:40,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:40,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:40,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:26:40,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:40,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:40,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:40,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:40,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:40,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:40,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:40,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:40,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:40,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:40,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-21 20:26:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:40,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:40,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:40,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:26:40,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:40,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:40,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:40,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:40,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:26:40,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:40,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:40,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:40,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:40,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:26:40,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:40,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:40,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:40,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:40,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:40,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:40,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:40,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:40,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:40,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:40,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-21 20:26:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:40,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:40,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:40,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:26:40,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:40,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:40,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:40,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:40,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:40,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:40,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:40,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:40,796 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-02-21 20:26:40,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114285897] [2021-02-21 20:26:40,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:26:40,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-02-21 20:26:40,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191725647] [2021-02-21 20:26:40,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-02-21 20:26:40,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:26:40,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-02-21 20:26:40,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2021-02-21 20:26:40,799 INFO L87 Difference]: Start difference. First operand 185 states and 238 transitions. Second operand 29 states. [2021-02-21 20:26:45,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:26:45,553 INFO L93 Difference]: Finished difference Result 223 states and 286 transitions. [2021-02-21 20:26:45,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-02-21 20:26:45,554 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 236 [2021-02-21 20:26:45,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:26:45,557 INFO L225 Difference]: With dead ends: 223 [2021-02-21 20:26:45,557 INFO L226 Difference]: Without dead ends: 217 [2021-02-21 20:26:45,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=318, Invalid=4794, Unknown=0, NotChecked=0, Total=5112 [2021-02-21 20:26:45,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-02-21 20:26:45,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 207. [2021-02-21 20:26:45,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2021-02-21 20:26:45,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 269 transitions. [2021-02-21 20:26:45,605 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 269 transitions. Word has length 236 [2021-02-21 20:26:45,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:26:45,606 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 269 transitions. [2021-02-21 20:26:45,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2021-02-21 20:26:45,606 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 269 transitions. [2021-02-21 20:26:45,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-02-21 20:26:45,609 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:26:45,609 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 12, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:26:45,609 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-21 20:26:45,609 INFO L428 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:26:45,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:26:45,610 INFO L82 PathProgramCache]: Analyzing trace with hash 940431930, now seen corresponding path program 7 times [2021-02-21 20:26:45,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:26:45,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004602418] [2021-02-21 20:26:45,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:26:45,614 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:26:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:45,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:45,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:45,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:45,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:26:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:45,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:45,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:26:45,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:45,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:45,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:45,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:45,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:45,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:45,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:45,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:45,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:45,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:45,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:45,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:45,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:45,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:45,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:45,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:45,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:45,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:45,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:45,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:45,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:45,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:45,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:45,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:45,917 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:45,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-21 20:26:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:45,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:45,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:45,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:45,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:45,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:45,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:45,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:45,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:45,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:45,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:45,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:46,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-02-21 20:26:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:46,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:46,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:46,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:46,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:46,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:46,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:46,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:46,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:46,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:46,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:46,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:46,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:46,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:46,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:46,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 20:26:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:46,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:46,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:46,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:46,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:46,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:46,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:46,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:46,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:46,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:46,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:46,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:46,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:46,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:46,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:46,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:46,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:46,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:46,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-21 20:26:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:46,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:46,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:46,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:46,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:46,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:46,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:46,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:46,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:46,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:46,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:46,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:46,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:46,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:46,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:46,271 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 20 proven. 54 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-02-21 20:26:46,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004602418] [2021-02-21 20:26:46,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:26:46,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-21 20:26:46,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180205355] [2021-02-21 20:26:46,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-21 20:26:46,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:26:46,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-21 20:26:46,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-02-21 20:26:46,274 INFO L87 Difference]: Start difference. First operand 207 states and 269 transitions. Second operand 16 states. [2021-02-21 20:26:47,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:26:47,569 INFO L93 Difference]: Finished difference Result 391 states and 527 transitions. [2021-02-21 20:26:47,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-21 20:26:47,569 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 255 [2021-02-21 20:26:47,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:26:47,572 INFO L225 Difference]: With dead ends: 391 [2021-02-21 20:26:47,572 INFO L226 Difference]: Without dead ends: 198 [2021-02-21 20:26:47,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2021-02-21 20:26:47,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-02-21 20:26:47,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 185. [2021-02-21 20:26:47,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2021-02-21 20:26:47,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 239 transitions. [2021-02-21 20:26:47,613 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 239 transitions. Word has length 255 [2021-02-21 20:26:47,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:26:47,613 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 239 transitions. [2021-02-21 20:26:47,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-21 20:26:47,613 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 239 transitions. [2021-02-21 20:26:47,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-02-21 20:26:47,616 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:26:47,616 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 11, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:26:47,616 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-21 20:26:47,616 INFO L428 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:26:47,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:26:47,617 INFO L82 PathProgramCache]: Analyzing trace with hash -546716475, now seen corresponding path program 8 times [2021-02-21 20:26:47,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:26:47,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931305115] [2021-02-21 20:26:47,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:26:47,620 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:26:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:47,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:47,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:47,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:47,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:47,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:47,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:47,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:26:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:47,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:47,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:47,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:26:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:47,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:47,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:47,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:47,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:47,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:47,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:47,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:47,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:47,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:47,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:47,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:47,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:47,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:47,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:47,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:47,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:47,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:47,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:47,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:47,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:47,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:47,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:47,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:47,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:47,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:47,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:47,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:47,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:47,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:47,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:47,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:47,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:47,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:47,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:47,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:47,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:47,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:47,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:47,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:47,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:47,983 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:47,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:47,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:47,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:47,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:47,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-21 20:26:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:47,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:47,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:47,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:47,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:47,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:47,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:48,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:48,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:48,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-02-21 20:26:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:48,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:48,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:48,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:48,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:48,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:48,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:48,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:48,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:48,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:48,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:48,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:48,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:48,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:48,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:48,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:48,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-21 20:26:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:48,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:48,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:48,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:48,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:48,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:48,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:48,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:48,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:48,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:48,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:48,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:48,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:48,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:48,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:48,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:48,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:48,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:48,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:48,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:48,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:48,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:48,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:48,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:48,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:48,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:48,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:48,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:48,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:48,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:48,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:48,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:48,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-21 20:26:48,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:48,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:48,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:48,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:48,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:48,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:48,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:48,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:48,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:48,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:48,256 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-21 20:26:48,257 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-21 20:26:48,275 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-21 20:26:48,276 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-21 20:26:48,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:48,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:48,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:48,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:48,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:48,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:48,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:48,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:48,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:48,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:48,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:48,440 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 82 proven. 32 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-02-21 20:26:48,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931305115] [2021-02-21 20:26:48,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:26:48,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-02-21 20:26:48,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746141768] [2021-02-21 20:26:48,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-02-21 20:26:48,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:26:48,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-02-21 20:26:48,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2021-02-21 20:26:48,443 INFO L87 Difference]: Start difference. First operand 185 states and 239 transitions. Second operand 27 states. [2021-02-21 20:26:51,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:26:51,126 INFO L93 Difference]: Finished difference Result 398 states and 569 transitions. [2021-02-21 20:26:51,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-02-21 20:26:51,126 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 254 [2021-02-21 20:26:51,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:26:51,131 INFO L225 Difference]: With dead ends: 398 [2021-02-21 20:26:51,131 INFO L226 Difference]: Without dead ends: 226 [2021-02-21 20:26:51,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1057 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=507, Invalid=3033, Unknown=0, NotChecked=0, Total=3540 [2021-02-21 20:26:51,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-02-21 20:26:51,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 191. [2021-02-21 20:26:51,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2021-02-21 20:26:51,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 247 transitions. [2021-02-21 20:26:51,175 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 247 transitions. Word has length 254 [2021-02-21 20:26:51,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:26:51,176 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 247 transitions. [2021-02-21 20:26:51,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-02-21 20:26:51,176 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 247 transitions. [2021-02-21 20:26:51,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2021-02-21 20:26:51,179 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:26:51,180 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 18, 18, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 7, 7, 7, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:26:51,180 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-02-21 20:26:51,180 INFO L428 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:26:51,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:26:51,181 INFO L82 PathProgramCache]: Analyzing trace with hash 649655887, now seen corresponding path program 9 times [2021-02-21 20:26:51,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:26:51,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348181784] [2021-02-21 20:26:51,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:26:51,186 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:26:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:51,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:26:51,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:26:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:51,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:51,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:51,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:51,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:51,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:51,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:51,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:26:51,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:51,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:51,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:51,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:51,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-21 20:26:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:51,643 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-21 20:26:51,643 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-21 20:26:51,659 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-21 20:26:51,660 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-21 20:26:51,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:26:51,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-02-21 20:26:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-21 20:26:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-21 20:26:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-02-21 20:26:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:51,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:51,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:51,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-21 20:26:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-02-21 20:26:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:51,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-02-21 20:26:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-21 20:26:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 20:26:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:51,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:26:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:26:51,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:26:51,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:26:52,205 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2021-02-21 20:26:52,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348181784] [2021-02-21 20:26:52,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:26:52,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-21 20:26:52,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237133295] [2021-02-21 20:26:52,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-21 20:26:52,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:26:52,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-21 20:26:52,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-02-21 20:26:52,209 INFO L87 Difference]: Start difference. First operand 191 states and 247 transitions. Second operand 16 states. [2021-02-21 20:26:53,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:26:53,196 INFO L93 Difference]: Finished difference Result 236 states and 305 transitions. [2021-02-21 20:26:53,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 20:26:53,197 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 412 [2021-02-21 20:26:53,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:26:53,199 INFO L225 Difference]: With dead ends: 236 [2021-02-21 20:26:53,199 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 20:26:53,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=568, Unknown=0, NotChecked=0, Total=702 [2021-02-21 20:26:53,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 20:26:53,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 20:26:53,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 20:26:53,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 20:26:53,202 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 412 [2021-02-21 20:26:53,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:26:53,202 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 20:26:53,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-21 20:26:53,203 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 20:26:53,203 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 20:26:53,203 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-02-21 20:26:53,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 20:26:54,917 WARN L202 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 110 [2021-02-21 20:26:55,045 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 109 [2021-02-21 20:26:56,624 WARN L202 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 104 [2021-02-21 20:26:58,041 WARN L202 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 105 [2021-02-21 20:26:58,919 WARN L202 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 105 [2021-02-21 20:27:02,377 WARN L202 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 108 [2021-02-21 20:27:06,691 WARN L202 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 108 [2021-02-21 20:27:09,153 WARN L202 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 8 [2021-02-21 20:27:09,387 WARN L202 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 6 [2021-02-21 20:27:09,596 WARN L202 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 7 [2021-02-21 20:27:10,293 WARN L202 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 31 [2021-02-21 20:27:11,492 WARN L202 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 190 DAG size of output: 51 [2021-02-21 20:27:11,719 WARN L202 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 6 [2021-02-21 20:27:12,726 WARN L202 SmtUtils]: Spent 977.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 44 [2021-02-21 20:27:13,418 WARN L202 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 31 [2021-02-21 20:27:14,600 WARN L202 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 181 DAG size of output: 43 [2021-02-21 20:27:15,788 WARN L202 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 181 DAG size of output: 43 [2021-02-21 20:27:15,923 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 6 [2021-02-21 20:27:16,630 WARN L202 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 32 [2021-02-21 20:27:16,747 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 3 [2021-02-21 20:27:17,288 WARN L202 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 35 [2021-02-21 20:27:18,086 WARN L202 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 39 [2021-02-21 20:27:18,625 WARN L202 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 35 [2021-02-21 20:27:18,823 WARN L202 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 6 [2021-02-21 20:27:20,300 WARN L202 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 218 DAG size of output: 48 [2021-02-21 20:27:20,494 WARN L202 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 6 [2021-02-21 20:27:21,113 WARN L202 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 32 [2021-02-21 20:27:22,005 WARN L202 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 39 [2021-02-21 20:27:22,770 WARN L202 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 47 [2021-02-21 20:27:23,319 WARN L202 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 37 [2021-02-21 20:27:23,577 WARN L202 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 7 [2021-02-21 20:27:25,111 WARN L202 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 218 DAG size of output: 48 [2021-02-21 20:27:25,346 WARN L202 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 3 [2021-02-21 20:27:25,355 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-02-21 20:27:25,355 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-02-21 20:27:25,355 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-02-21 20:27:25,356 INFO L192 CegarLoopUtils]: At program point L4-3(line 4) the Hoare annotation is: true [2021-02-21 20:27:25,356 INFO L192 CegarLoopUtils]: At program point L4-4(line 4) the Hoare annotation is: true [2021-02-21 20:27:25,356 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 20:27:25,356 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-21 20:27:25,356 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 4) the Hoare annotation is: true [2021-02-21 20:27:25,356 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|)) [2021-02-21 20:27:25,357 INFO L192 CegarLoopUtils]: At program point L4(line 4) the Hoare annotation is: true [2021-02-21 20:27:25,357 INFO L192 CegarLoopUtils]: At program point L4-1(line 4) the Hoare annotation is: true [2021-02-21 20:27:25,357 INFO L192 CegarLoopUtils]: At program point L4-2(line 4) the Hoare annotation is: true [2021-02-21 20:27:25,357 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-21 20:27:25,357 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-21 20:27:25,357 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 20:27:25,357 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 20:27:25,357 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-21 20:27:25,357 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 41) the Hoare annotation is: false [2021-02-21 20:27:25,357 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 37 44) the Hoare annotation is: true [2021-02-21 20:27:25,358 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 37 44) the Hoare annotation is: (<= 6 main_~x~0) [2021-02-21 20:27:25,358 INFO L185 CegarLoopUtils]: At program point mainFINAL(lines 37 44) the Hoare annotation is: (<= 6 main_~x~0) [2021-02-21 20:27:25,358 INFO L185 CegarLoopUtils]: At program point L41(line 41) the Hoare annotation is: false [2021-02-21 20:27:25,358 INFO L185 CegarLoopUtils]: At program point L40(lines 40 42) the Hoare annotation is: (and (<= 6 main_~x~0) (<= main_~x~0 6) (< 7 main_~result~0) (<= main_~result~0 8)) [2021-02-21 20:27:25,358 INFO L185 CegarLoopUtils]: At program point L41-1(line 41) the Hoare annotation is: false [2021-02-21 20:27:25,358 INFO L185 CegarLoopUtils]: At program point L39(line 39) the Hoare annotation is: (and (<= 6 main_~x~0) (<= main_~x~0 6)) [2021-02-21 20:27:25,358 INFO L185 CegarLoopUtils]: At program point L39-1(line 39) the Hoare annotation is: (and (<= 8 |main_#t~ret11|) (<= 6 main_~x~0) (<= |main_#t~ret11| 8) (<= main_~x~0 6)) [2021-02-21 20:27:25,358 INFO L185 CegarLoopUtils]: At program point L40-2(lines 40 42) the Hoare annotation is: (<= 6 main_~x~0) [2021-02-21 20:27:25,359 INFO L185 CegarLoopUtils]: At program point L39-2(line 39) the Hoare annotation is: (and (<= 8 |main_#t~ret11|) (<= 6 main_~x~0) (<= |main_#t~ret11| 8) (<= main_~x~0 6)) [2021-02-21 20:27:25,359 INFO L185 CegarLoopUtils]: At program point L39-3(line 39) the Hoare annotation is: (and (<= 8 |main_#t~ret11|) (<= 6 main_~x~0) (<= |main_#t~ret11| 8) (<= main_~x~0 6) (< 7 main_~result~0) (<= main_~result~0 8)) [2021-02-21 20:27:25,359 INFO L192 CegarLoopUtils]: At program point fibo2ENTRY(lines 19 27) the Hoare annotation is: true [2021-02-21 20:27:25,359 INFO L185 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (< 1 fibo2_~n)) [2021-02-21 20:27:25,359 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| 3) (<= 3 |fibo2_#t~ret9|) .cse0 (<= 5 fibo2_~n)) (and (<= 6 fibo2_~n) .cse0) (and (<= |fibo2_#t~ret9| 2) .cse0 (<= fibo2_~n 4) (<= 2 |fibo2_#t~ret9|)) (and .cse0 (<= fibo2_~n 2)))) (or (and (<= |fibo2_#t~ret9| 1) (<= 1 |fibo2_#t~ret9|)) (not (<= |fibo2_#in~n| 3))) (not (<= |fibo2_#in~n| 1))) [2021-02-21 20:27:25,360 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)) [2021-02-21 20:27:25,360 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| 3) (<= 3 |fibo2_#t~ret9|) .cse0 (<= 5 fibo2_~n)) (and (<= 6 fibo2_~n) .cse0) (and (<= |fibo2_#t~ret9| 2) .cse0 (<= fibo2_~n 4) (<= 2 |fibo2_#t~ret9|)) (and .cse0 (<= fibo2_~n 2)))) (or (and (<= |fibo2_#t~ret9| 1) (<= 1 |fibo2_#t~ret9|)) (not (<= |fibo2_#in~n| 3))) (not (<= |fibo2_#in~n| 1))) [2021-02-21 20:27:25,360 INFO L185 CegarLoopUtils]: At program point L22(lines 22 26) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (< 0 fibo2_~n)) [2021-02-21 20:27:25,360 INFO L185 CegarLoopUtils]: At program point L25-3(line 25) the Hoare annotation is: (let ((.cse0 (= fibo2_~n |fibo2_#in~n|)) (.cse1 (+ |fibo2_#t~ret9| |fibo2_#t~ret10|))) (or (and (<= |fibo2_#t~ret9| 1) .cse0 (<= fibo2_~n 2) (<= .cse1 1) (< 1 fibo2_~n) (<= 1 |fibo2_#t~ret9|) (<= 1 .cse1)) (and (<= 6 fibo2_~n) .cse0) (and (<= |fibo2_#t~ret9| 3) (<= 3 |fibo2_#t~ret9|) (<= .cse1 5) .cse0 (<= 5 fibo2_~n) (<= 5 .cse1)) (and (<= .cse1 3) (<= |fibo2_#t~ret9| 2) (<= 4 |fibo2_#in~n|) .cse0 (<= 3 .cse1) (<= fibo2_~n 4) (<= 2 |fibo2_#t~ret9|)))) [2021-02-21 20:27:25,360 INFO L185 CegarLoopUtils]: At program point L21(line 21) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (<= |fibo2_#in~n| 0)) [2021-02-21 20:27:25,360 INFO L185 CegarLoopUtils]: At program point L25-4(line 25) the Hoare annotation is: (let ((.cse0 (= fibo2_~n |fibo2_#in~n|)) (.cse1 (+ |fibo2_#t~ret9| |fibo2_#t~ret10|))) (or (and (<= |fibo2_#t~ret9| 1) .cse0 (<= fibo2_~n 2) (<= .cse1 1) (< 1 fibo2_~n) (<= 1 |fibo2_#t~ret9|) (<= 1 .cse1)) (and (<= 6 fibo2_~n) .cse0) (and (<= |fibo2_#t~ret9| 3) (<= 3 |fibo2_#t~ret9|) (<= .cse1 5) .cse0 (<= 5 fibo2_~n) (<= 5 .cse1)) (and (<= .cse1 3) (<= |fibo2_#t~ret9| 2) (<= 4 |fibo2_#in~n|) .cse0 (<= 3 .cse1) (<= fibo2_~n 4) (<= 2 |fibo2_#t~ret9|)))) [2021-02-21 20:27:25,361 INFO L185 CegarLoopUtils]: At program point L20(lines 20 26) the Hoare annotation is: (= fibo2_~n |fibo2_#in~n|) [2021-02-21 20:27:25,361 INFO L185 CegarLoopUtils]: At program point L25-5(line 25) the Hoare annotation is: (let ((.cse1 (= fibo2_~n |fibo2_#in~n|)) (.cse2 (+ |fibo2_#t~ret9| |fibo2_#t~ret10|))) (let ((.cse0 (and (<= .cse2 3) (<= |fibo2_#t~ret9| 2) (<= 4 |fibo2_#in~n|) (<= 3 |fibo2_#res|) (<= |fibo2_#res| 3) .cse1 (<= fibo2_~n 4) (<= 3 .cse2) (<= 2 |fibo2_#t~ret9|)))) (and (or .cse0 (and (<= 6 fibo2_~n) .cse1) (and (<= |fibo2_#t~ret9| 3) (<= |fibo2_#res| 5) (<= 3 |fibo2_#t~ret9|) (<= .cse2 5) .cse1 (<= 5 |fibo2_#res|) (<= 5 .cse2)) (and .cse1 (<= fibo2_~n 2))) (or (not (<= |fibo2_#in~n| 4)) .cse0 (and (<= 1 |fibo2_#res|) (<= |fibo2_#res| 1) (<= |fibo2_#t~ret9| 1) (<= .cse2 1) (<= 1 |fibo2_#t~ret9|) (<= 1 .cse2))) (not (<= |fibo2_#in~n| 1))))) [2021-02-21 20:27:25,361 INFO L185 CegarLoopUtils]: At program point L25-6(line 25) the Hoare annotation is: (let ((.cse1 (= fibo2_~n |fibo2_#in~n|))) (let ((.cse0 (and (<= 1 |fibo2_#res|) (<= |fibo2_#res| 1) (<= |fibo2_#t~ret9| 1) .cse1 (<= fibo2_~n 2) (< 1 fibo2_~n) (<= 1 |fibo2_#t~ret9|)))) (and (or .cse0 (not (<= |fibo2_#in~n| 3))) (or (and (<= 6 fibo2_~n) .cse1) (and (<= |fibo2_#t~ret9| 3) (<= |fibo2_#res| 5) (<= 3 |fibo2_#t~ret9|) .cse1 (<= 5 fibo2_~n) (<= 5 |fibo2_#res|)) (and (<= |fibo2_#t~ret9| 2) (<= 3 |fibo2_#res|) (<= |fibo2_#res| 3) .cse1 (<= fibo2_~n 4) (<= 2 |fibo2_#t~ret9|)) .cse0)))) [2021-02-21 20:27:25,361 INFO L185 CegarLoopUtils]: At program point fibo2FINAL(lines 19 27) the Hoare annotation is: (let ((.cse1 (<= |fibo2_#in~n| 1)) (.cse0 (and (<= 1 |fibo2_#res|) (<= |fibo2_#res| 1)))) (and (or .cse0 (<= |fibo2_#in~n| 0) (not .cse1)) (or .cse1 .cse0 (not (<= |fibo2_#in~n| 3))) (let ((.cse2 (= fibo2_~n |fibo2_#in~n|))) (or (and .cse2 (< 0 fibo2_~n)) (and (<= |fibo2_#res| 0) (<= 0 |fibo2_#res|) .cse2))) (or (and (<= 3 |fibo2_#res|) (<= |fibo2_#res| 3) (<= fibo2_~n 4)) (and (<= |fibo2_#res| 5) (<= 5 fibo2_~n) (<= 5 |fibo2_#res|)) (<= 6 fibo2_~n) (<= fibo2_~n 2)))) [2021-02-21 20:27:25,361 INFO L185 CegarLoopUtils]: At program point fibo2EXIT(lines 19 27) the Hoare annotation is: (let ((.cse1 (<= |fibo2_#in~n| 1)) (.cse0 (and (<= 1 |fibo2_#res|) (<= |fibo2_#res| 1)))) (and (or .cse0 (<= |fibo2_#in~n| 0) (not .cse1)) (or .cse1 .cse0 (not (<= |fibo2_#in~n| 3))) (let ((.cse2 (= fibo2_~n |fibo2_#in~n|))) (or (and .cse2 (< 0 fibo2_~n)) (and (<= |fibo2_#res| 0) (<= 0 |fibo2_#res|) .cse2))) (or (and (<= 3 |fibo2_#res|) (<= |fibo2_#res| 3) (<= fibo2_~n 4)) (and (<= |fibo2_#res| 5) (<= 5 fibo2_~n) (<= 5 |fibo2_#res|)) (<= 6 fibo2_~n) (<= fibo2_~n 2)))) [2021-02-21 20:27:25,362 INFO L192 CegarLoopUtils]: At program point fibo1ENTRY(lines 9 17) the Hoare annotation is: true [2021-02-21 20:27:25,362 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: (and (= fibo1_~n |fibo1_#in~n|) (not (<= |fibo1_#in~n| 2))) [2021-02-21 20:27:25,362 INFO L185 CegarLoopUtils]: At program point L15-1(line 15) the Hoare annotation is: (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 5 fibo1_~n) (<= fibo1_~n 5) .cse0) (and (<= 4 fibo1_~n) (<= fibo1_~n 4) .cse0 (<= |fibo1_#t~ret7| 2) (<= 2 |fibo1_#t~ret7|)) (and (<= 3 fibo1_~n) (<= 1 |fibo1_#t~ret7|) (<= |fibo1_#t~ret7| 1) .cse0 (<= fibo1_~n 3)) (and (<= 7 fibo1_~n) .cse0) (and (<= 5 |fibo1_#t~ret7|) .cse0 (<= |fibo1_#t~ret7| 5) (<= 6 fibo1_~n)))) [2021-02-21 20:27:25,362 INFO L185 CegarLoopUtils]: At program point L13(line 13) the Hoare annotation is: (and (<= |fibo1_#in~n| 1) (= fibo1_~n |fibo1_#in~n|) (<= 1 fibo1_~n)) [2021-02-21 20:27:25,362 INFO L185 CegarLoopUtils]: At program point L15-2(line 15) the Hoare annotation is: (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 5 fibo1_~n) (<= fibo1_~n 5) .cse0) (and (<= 4 fibo1_~n) (<= fibo1_~n 4) .cse0 (<= |fibo1_#t~ret7| 2) (<= 2 |fibo1_#t~ret7|)) (and (<= 3 fibo1_~n) (<= 1 |fibo1_#t~ret7|) (<= |fibo1_#t~ret7| 1) .cse0 (<= fibo1_~n 3)) (and (<= 7 fibo1_~n) .cse0) (and (<= 5 |fibo1_#t~ret7|) .cse0 (<= |fibo1_#t~ret7| 5) (<= 6 fibo1_~n)))) [2021-02-21 20:27:25,362 INFO L185 CegarLoopUtils]: At program point L12(lines 12 16) the Hoare annotation is: (and (= fibo1_~n |fibo1_#in~n|) (<= 1 fibo1_~n)) [2021-02-21 20:27:25,363 INFO L185 CegarLoopUtils]: At program point L15-3(line 15) the Hoare annotation is: (let ((.cse0 (+ |fibo1_#t~ret7| |fibo1_#t~ret8|))) (and (or (not (<= |fibo1_#in~n| 3)) (and (<= 3 fibo1_~n) (<= 1 |fibo1_#t~ret7|) (<= 2 .cse0) (<= .cse0 2) (<= |fibo1_#t~ret7| 1))) (let ((.cse1 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 7 fibo1_~n) .cse1) (and .cse1 (or (<= fibo1_~n 5) (and (<= 5 |fibo1_#t~ret7|) (<= 8 .cse0) (<= |fibo1_#t~ret7| 5) (<= .cse0 8)))))) (or (not (<= |fibo1_#in~n| 4)) (and (<= .cse0 3) (<= 3 .cse0) (<= |fibo1_#t~ret7| 2) (<= 2 |fibo1_#t~ret7|)) (<= fibo1_~n 3)))) [2021-02-21 20:27:25,363 INFO L185 CegarLoopUtils]: At program point L11(line 11) the Hoare annotation is: (and (<= |fibo1_#in~n| 0) (= fibo1_~n |fibo1_#in~n|)) [2021-02-21 20:27:25,363 INFO L185 CegarLoopUtils]: At program point L15-4(line 15) the Hoare annotation is: (let ((.cse0 (+ |fibo1_#t~ret7| |fibo1_#t~ret8|))) (and (or (not (<= |fibo1_#in~n| 3)) (and (<= 3 fibo1_~n) (<= 1 |fibo1_#t~ret7|) (<= 2 .cse0) (<= .cse0 2) (<= |fibo1_#t~ret7| 1))) (let ((.cse1 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 7 fibo1_~n) .cse1) (and .cse1 (or (<= fibo1_~n 5) (and (<= 5 |fibo1_#t~ret7|) (<= 8 .cse0) (<= |fibo1_#t~ret7| 5) (<= .cse0 8)))))) (or (not (<= |fibo1_#in~n| 4)) (and (<= .cse0 3) (<= 3 .cse0) (<= |fibo1_#t~ret7| 2) (<= 2 |fibo1_#t~ret7|)) (<= fibo1_~n 3)))) [2021-02-21 20:27:25,363 INFO L185 CegarLoopUtils]: At program point fibo1FINAL(lines 9 17) the Hoare annotation is: (let ((.cse2 (= fibo1_~n |fibo1_#in~n|))) (let ((.cse3 (and (<= |fibo1_#in~n| 1) .cse2 (<= |fibo1_#res| 1) (<= 1 fibo1_~n) (<= 1 |fibo1_#res|))) (.cse4 (not (<= |fibo1_#in~n| 2)))) (and (let ((.cse0 (<= 4 fibo1_~n)) (.cse1 (<= fibo1_~n 5))) (or (not (<= 2 |fibo1_#in~n|)) (and (<= 5 fibo1_~n) (or (and (<= 8 |fibo1_#res|) (<= |fibo1_#res| 8)) (and .cse0 .cse1)) .cse2) (and (<= 2 |fibo1_#res|) (<= |fibo1_#res| 2) .cse2 (<= fibo1_~n 3)) (and (<= 7 fibo1_~n) .cse2) (and (<= |fibo1_#res| 3) (<= 3 |fibo1_#res|) .cse0 .cse1 .cse2))) (or .cse3 (and (<= |fibo1_#in~n| 0) .cse2) .cse4) (or .cse3 (and (<= 0 |fibo1_#res|) (<= |fibo1_#res| 0)) .cse4)))) [2021-02-21 20:27:25,363 INFO L185 CegarLoopUtils]: At program point L10(lines 10 16) the Hoare annotation is: (= fibo1_~n |fibo1_#in~n|) [2021-02-21 20:27:25,364 INFO L185 CegarLoopUtils]: At program point L15-5(line 15) the Hoare annotation is: (let ((.cse0 (+ |fibo1_#t~ret7| |fibo1_#t~ret8|))) (and (or (and (<= 2 |fibo1_#res|) (<= 1 |fibo1_#t~ret7|) (<= 2 .cse0) (<= .cse0 2) (<= |fibo1_#t~ret7| 1) (<= |fibo1_#res| 2)) (not (<= |fibo1_#in~n| 3))) (not (<= |fibo1_#in~n| 2)) (let ((.cse1 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 7 fibo1_~n) .cse1) (and .cse1 (<= fibo1_~n 3)) (and (<= |fibo1_#res| 3) (<= .cse0 3) (<= 3 |fibo1_#res|) (<= 3 .cse0) (<= fibo1_~n 4) .cse1 (<= |fibo1_#t~ret7| 2) (<= 2 |fibo1_#t~ret7|)) (and (or (<= fibo1_~n 5) (and (<= 8 |fibo1_#res|) (<= 5 |fibo1_#t~ret7|) (<= |fibo1_#res| 8) (<= 8 .cse0) (<= |fibo1_#t~ret7| 5) (<= .cse0 8))) (<= 5 fibo1_~n) .cse1))))) [2021-02-21 20:27:25,364 INFO L185 CegarLoopUtils]: At program point L15-6(line 15) the Hoare annotation is: (let ((.cse1 (<= 3 fibo1_~n))) (let ((.cse2 (or (and .cse1 (<= fibo1_~n 4)) (and (<= 4 fibo1_~n) (<= fibo1_~n 5)))) (.cse3 (<= 4 |fibo1_#in~n|)) (.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 7 fibo1_~n) .cse0) (and .cse1 (<= 2 |fibo1_#res|) (<= 1 |fibo1_#t~ret7|) (<= |fibo1_#t~ret7| 1) (<= |fibo1_#res| 2) .cse0 (<= fibo1_~n 3)) (and (<= |fibo1_#res| 3) (<= 3 |fibo1_#res|) .cse2 .cse3 .cse0 (<= |fibo1_#t~ret7| 2) (<= 2 |fibo1_#t~ret7|)) (and (<= 5 fibo1_~n) (or (and (<= 8 |fibo1_#res|) (<= 5 |fibo1_#t~ret7|) (<= |fibo1_#res| 8) .cse0 (<= |fibo1_#t~ret7| 5)) (and .cse2 .cse3 .cse0)))))) [2021-02-21 20:27:25,364 INFO L185 CegarLoopUtils]: At program point fibo1EXIT(lines 9 17) the Hoare annotation is: (let ((.cse2 (= fibo1_~n |fibo1_#in~n|))) (let ((.cse3 (and (<= |fibo1_#in~n| 1) .cse2 (<= |fibo1_#res| 1) (<= 1 fibo1_~n) (<= 1 |fibo1_#res|))) (.cse4 (not (<= |fibo1_#in~n| 2)))) (and (let ((.cse0 (<= 4 fibo1_~n)) (.cse1 (<= fibo1_~n 5))) (or (not (<= 2 |fibo1_#in~n|)) (and (<= 5 fibo1_~n) (or (and (<= 8 |fibo1_#res|) (<= |fibo1_#res| 8)) (and .cse0 .cse1)) .cse2) (and (<= 2 |fibo1_#res|) (<= |fibo1_#res| 2) .cse2 (<= fibo1_~n 3)) (and (<= 7 fibo1_~n) .cse2) (and (<= |fibo1_#res| 3) (<= 3 |fibo1_#res|) .cse0 .cse1 .cse2))) (or .cse3 (and (<= |fibo1_#in~n| 0) .cse2) .cse4) (or .cse3 (and (<= 0 |fibo1_#res|) (<= |fibo1_#res| 0)) .cse4)))) [2021-02-21 20:27:25,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:27:25 BoogieIcfgContainer [2021-02-21 20:27:25,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:27:25,389 INFO L168 Benchmark]: Toolchain (without parser) took 69225.42 ms. Allocated memory was 156.2 MB in the beginning and 811.6 MB in the end (delta: 655.4 MB). Free memory was 132.8 MB in the beginning and 726.6 MB in the end (delta: -593.7 MB). Peak memory consumption was 496.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:27:25,389 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 156.2 MB. Free memory is still 130.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:27:25,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.70 ms. Allocated memory is still 156.2 MB. Free memory was 131.8 MB in the beginning and 122.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 20:27:25,390 INFO L168 Benchmark]: Boogie Preprocessor took 39.08 ms. Allocated memory is still 156.2 MB. Free memory was 122.2 MB in the beginning and 121.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:27:25,390 INFO L168 Benchmark]: RCFGBuilder took 670.67 ms. Allocated memory is still 156.2 MB. Free memory was 120.8 MB in the beginning and 135.5 MB in the end (delta: -14.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. [2021-02-21 20:27:25,390 INFO L168 Benchmark]: TraceAbstraction took 68243.79 ms. Allocated memory was 156.2 MB in the beginning and 811.6 MB in the end (delta: 655.4 MB). Free memory was 135.0 MB in the beginning and 726.6 MB in the end (delta: -591.6 MB). Peak memory consumption was 498.5 MB. Max. memory is 8.0 GB. [2021-02-21 20:27:25,391 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 156.2 MB. Free memory is still 130.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 254.70 ms. Allocated memory is still 156.2 MB. Free memory was 131.8 MB in the beginning and 122.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.08 ms. Allocated memory is still 156.2 MB. Free memory was 122.2 MB in the beginning and 121.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 670.67 ms. Allocated memory is still 156.2 MB. Free memory was 120.8 MB in the beginning and 135.5 MB in the end (delta: -14.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 68243.79 ms. Allocated memory was 156.2 MB in the beginning and 811.6 MB in the end (delta: 655.4 MB). Free memory was 135.0 MB in the beginning and 726.6 MB in the end (delta: -591.6 MB). Peak memory consumption was 498.5 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: 6 <= x - ProcedureContractResult [Line: 19]: Procedure Contract for fibo2 Derived contract for procedure fibo2: (((((1 <= \result && \result <= 1) || \old(n) <= 0) || !(\old(n) <= 1)) && ((\old(n) <= 1 || (1 <= \result && \result <= 1)) || !(\old(n) <= 3))) && ((n == \old(n) && 0 < n) || ((\result <= 0 && 0 <= \result) && n == \old(n)))) && (((((3 <= \result && \result <= 3) && n <= 4) || ((\result <= 5 && 5 <= n) && 5 <= \result)) || 6 <= n) || n <= 2) - ProcedureContractResult [Line: 9]: Procedure Contract for fibo1 Derived contract for procedure fibo1: (((((!(2 <= \old(n)) || ((5 <= n && ((8 <= \result && \result <= 8) || (4 <= n && n <= 5))) && n == \old(n))) || (((2 <= \result && \result <= 2) && n == \old(n)) && n <= 3)) || (7 <= n && n == \old(n))) || ((((\result <= 3 && 3 <= \result) && 4 <= n) && n <= 5) && n == \old(n))) && ((((((\old(n) <= 1 && n == \old(n)) && \result <= 1) && 1 <= n) && 1 <= \result) || (\old(n) <= 0 && n == \old(n))) || !(\old(n) <= 2))) && ((((((\old(n) <= 1 && n == \old(n)) && \result <= 1) && 1 <= n) && 1 <= \result) || (0 <= \result && \result <= 0)) || !(\old(n) <= 2)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 35.9s, OverallIterations: 20, TraceHistogramMax: 23, AutomataDifference: 23.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 32.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1058 SDtfs, 2448 SDslu, 2872 SDs, 0 SdLazy, 10600 SolverSat, 1377 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1251 GetRequests, 745 SyntacticMatches, 0 SemanticMatches, 506 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4281 ImplicationChecksByTransitivity, 14.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=436occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 20 MinimizatonAttempts, 305 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 54 LocationsWithAnnotation, 5738 PreInvPairs, 12059 NumberOfFragments, 1613 HoareAnnotationTreeSize, 5738 FomulaSimplifications, 1728169 FormulaSimplificationTreeSizeReduction, 15.6s HoareSimplificationTime, 54 FomulaSimplificationsInter, 200254 FormulaSimplificationTreeSizeReductionInter, 16.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...