/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_7-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:48:30,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:48:30,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:48:30,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:48:30,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:48:30,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:48:30,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:48:30,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:48:30,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:48:30,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:48:30,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:48:30,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:48:30,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:48:30,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:48:30,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:48:30,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:48:30,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 01:48:30,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:48:30,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:48:30,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:48:30,695 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:48:30,720 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:48:30,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:48:30,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:48:30,726 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:48:30,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:48:30,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:48:30,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:48:30,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:48:30,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:48:30,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:48:30,729 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:48:30,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:48:30,730 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:48:30,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:48:30,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:48:30,731 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:48:30,731 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:48:30,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:48:30,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:48:30,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:48:30,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:48:30,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:48:30,732 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:48:30,732 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:48:31,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:48:31,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:48:31,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:48:31,196 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:48:31,197 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:48:31,198 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_7-2.c [2021-02-22 01:48:31,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5230b6555/63779c19877a4e9a9bbf649a4a913ece/FLAG440d534d2 [2021-02-22 01:48:32,052 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:48:32,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_7-2.c [2021-02-22 01:48:32,062 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5230b6555/63779c19877a4e9a9bbf649a4a913ece/FLAG440d534d2 [2021-02-22 01:48:32,406 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5230b6555/63779c19877a4e9a9bbf649a4a913ece [2021-02-22 01:48:32,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:48:32,427 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:48:32,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:48:32,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:48:32,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:48:32,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:48:32" (1/1) ... [2021-02-22 01:48:32,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c1b1b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:48:32, skipping insertion in model container [2021-02-22 01:48:32,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:48:32" (1/1) ... [2021-02-22 01:48:32,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:48:32,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:48:32,720 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_7-2.c[741,754] [2021-02-22 01:48:32,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:48:32,735 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:48:32,752 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_7-2.c[741,754] [2021-02-22 01:48:32,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:48:32,769 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:48:32,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:48:32 WrapperNode [2021-02-22 01:48:32,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:48:32,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:48:32,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:48:32,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:48:32,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:48:32" (1/1) ... [2021-02-22 01:48:32,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:48:32" (1/1) ... [2021-02-22 01:48:32,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:48:32" (1/1) ... [2021-02-22 01:48:32,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:48:32" (1/1) ... [2021-02-22 01:48:32,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:48:32" (1/1) ... [2021-02-22 01:48:32,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:48:32" (1/1) ... [2021-02-22 01:48:32,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:48:32" (1/1) ... [2021-02-22 01:48:32,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:48:32,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:48:32,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:48:32,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:48:32,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:48:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:48:32,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:48:32,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:48:32,903 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:48:32,903 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2021-02-22 01:48:32,904 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:48:32,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 01:48:32,904 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:48:32,904 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:48:32,904 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:48:32,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:48:32,905 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2021-02-22 01:48:32,905 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:48:32,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:48:32,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:48:32,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:48:32,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:48:32,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:48:32,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:48:33,290 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:48:33,293 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-22 01:48:33,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:48:33 BoogieIcfgContainer [2021-02-22 01:48:33,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:48:33,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:48:33,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:48:33,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:48:33,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:48:32" (1/3) ... [2021-02-22 01:48:33,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4f30c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:48:33, skipping insertion in model container [2021-02-22 01:48:33,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:48:32" (2/3) ... [2021-02-22 01:48:33,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4f30c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:48:33, skipping insertion in model container [2021-02-22 01:48:33,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:48:33" (3/3) ... [2021-02-22 01:48:33,329 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_7-2.c [2021-02-22 01:48:33,354 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:48:33,364 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:48:33,390 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:48:33,433 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:48:33,434 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:48:33,434 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:48:33,434 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:48:33,434 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:48:33,435 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:48:33,435 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:48:33,435 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:48:33,455 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2021-02-22 01:48:33,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-22 01:48:33,467 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:48:33,468 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] [2021-02-22 01:48:33,469 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:48:33,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:48:33,476 INFO L82 PathProgramCache]: Analyzing trace with hash -61711174, now seen corresponding path program 1 times [2021-02-22 01:48:33,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:48:33,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085112136] [2021-02-22 01:48:33,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:48:33,589 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:48:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:33,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:33,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:33,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:33,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:33,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:33,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:33,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:33,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:33,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:48:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:33,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:33,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:33,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-22 01:48:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:33,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:33,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:33,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:33,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:33,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:48:33,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085112136] [2021-02-22 01:48:33,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:48:33,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 01:48:33,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699503566] [2021-02-22 01:48:33,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 01:48:33,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:48:33,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 01:48:33,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-22 01:48:33,934 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 6 states. [2021-02-22 01:48:34,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:48:34,301 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2021-02-22 01:48:34,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-22 01:48:34,304 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-02-22 01:48:34,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:48:34,315 INFO L225 Difference]: With dead ends: 56 [2021-02-22 01:48:34,315 INFO L226 Difference]: Without dead ends: 36 [2021-02-22 01:48:34,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-22 01:48:34,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-02-22 01:48:34,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-02-22 01:48:34,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-02-22 01:48:34,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-02-22 01:48:34,379 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 24 [2021-02-22 01:48:34,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:48:34,380 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-02-22 01:48:34,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 01:48:34,380 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-02-22 01:48:34,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-22 01:48:34,382 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:48:34,383 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] [2021-02-22 01:48:34,383 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:48:34,383 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:48:34,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:48:34,384 INFO L82 PathProgramCache]: Analyzing trace with hash 118225994, now seen corresponding path program 1 times [2021-02-22 01:48:34,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:48:34,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567641661] [2021-02-22 01:48:34,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:48:34,388 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:48:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:34,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:34,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:34,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:34,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:34,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:34,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:34,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:34,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:34,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:48:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:34,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:34,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:34,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-22 01:48:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:34,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:34,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:34,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:34,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:34,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:48:34,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567641661] [2021-02-22 01:48:34,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:48:34,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 01:48:34,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84277009] [2021-02-22 01:48:34,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 01:48:34,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:48:34,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 01:48:34,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-22 01:48:34,583 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 6 states. [2021-02-22 01:48:34,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:48:34,829 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2021-02-22 01:48:34,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-22 01:48:34,831 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2021-02-22 01:48:34,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:48:34,840 INFO L225 Difference]: With dead ends: 44 [2021-02-22 01:48:34,840 INFO L226 Difference]: Without dead ends: 38 [2021-02-22 01:48:34,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-22 01:48:34,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-02-22 01:48:34,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2021-02-22 01:48:34,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-02-22 01:48:34,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-02-22 01:48:34,876 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 25 [2021-02-22 01:48:34,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:48:34,877 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-02-22 01:48:34,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 01:48:34,878 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-02-22 01:48:34,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-22 01:48:34,881 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:48:34,881 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:48:34,882 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:48:34,882 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:48:34,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:48:34,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1102510105, now seen corresponding path program 1 times [2021-02-22 01:48:34,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:48:34,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036960342] [2021-02-22 01:48:34,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:48:34,896 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:48:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:34,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:34,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:34,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:34,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:35,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:48:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:35,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:35,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:35,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-22 01:48:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:35,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:35,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:35,038 WARN L141 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size [2021-02-22 01:48:35,039 WARN L147 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size 3 [2021-02-22 01:48:35,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:35,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:48:35,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:35,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:35,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:35,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:35,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:35,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:35,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:35,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:35,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:35,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-02-22 01:48:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:35,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:35,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:35,090 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-22 01:48:35,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036960342] [2021-02-22 01:48:35,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:48:35,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-22 01:48:35,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404126089] [2021-02-22 01:48:35,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-22 01:48:35,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:48:35,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-22 01:48:35,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-22 01:48:35,095 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 7 states. [2021-02-22 01:48:35,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:48:35,360 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2021-02-22 01:48:35,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-22 01:48:35,361 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2021-02-22 01:48:35,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:48:35,363 INFO L225 Difference]: With dead ends: 60 [2021-02-22 01:48:35,363 INFO L226 Difference]: Without dead ends: 38 [2021-02-22 01:48:35,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-02-22 01:48:35,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-02-22 01:48:35,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-02-22 01:48:35,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-02-22 01:48:35,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2021-02-22 01:48:35,378 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 41 [2021-02-22 01:48:35,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:48:35,378 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2021-02-22 01:48:35,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-22 01:48:35,379 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2021-02-22 01:48:35,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-22 01:48:35,380 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:48:35,381 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:48:35,381 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:48:35,381 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:48:35,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:48:35,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1786640255, now seen corresponding path program 1 times [2021-02-22 01:48:35,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:48:35,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560438624] [2021-02-22 01:48:35,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:48:35,385 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:48:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:35,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:35,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:35,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:35,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:35,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:35,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:35,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:48:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:35,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:35,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:35,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-22 01:48:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:35,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:35,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:35,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:35,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:35,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:35,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:35,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:35,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:35,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:35,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:35,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:35,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:48:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:35,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:35,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:35,554 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-02-22 01:48:35,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560438624] [2021-02-22 01:48:35,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:48:35,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 01:48:35,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577320998] [2021-02-22 01:48:35,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 01:48:35,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:48:35,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 01:48:35,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-22 01:48:35,557 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 8 states. [2021-02-22 01:48:35,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:48:35,950 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2021-02-22 01:48:35,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-22 01:48:35,951 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2021-02-22 01:48:35,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:48:35,954 INFO L225 Difference]: With dead ends: 64 [2021-02-22 01:48:35,954 INFO L226 Difference]: Without dead ends: 58 [2021-02-22 01:48:35,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-02-22 01:48:35,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-02-22 01:48:35,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-02-22 01:48:35,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-02-22 01:48:35,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2021-02-22 01:48:35,976 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 42 [2021-02-22 01:48:35,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:48:35,977 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2021-02-22 01:48:35,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 01:48:35,977 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2021-02-22 01:48:35,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-02-22 01:48:35,980 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:48:35,980 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:48:35,980 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:48:35,980 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:48:35,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:48:35,981 INFO L82 PathProgramCache]: Analyzing trace with hash -413883838, now seen corresponding path program 2 times [2021-02-22 01:48:35,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:48:35,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987985349] [2021-02-22 01:48:35,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:48:35,984 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:48:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:36,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:36,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:36,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:36,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:36,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:48:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:36,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:36,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:36,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-22 01:48:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:36,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:36,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:36,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:36,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:36,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:36,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:36,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:36,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:36,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:36,124 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-22 01:48:36,125 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-22 01:48:36,135 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-22 01:48:36,136 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-22 01:48:36,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:36,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:36,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:36,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:36,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:36,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:48:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:36,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:36,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:36,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-22 01:48:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:36,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:36,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:36,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:36,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:36,194 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-02-22 01:48:36,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987985349] [2021-02-22 01:48:36,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:48:36,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 01:48:36,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596014575] [2021-02-22 01:48:36,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 01:48:36,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:48:36,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 01:48:36,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:48:36,197 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand 9 states. [2021-02-22 01:48:36,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:48:36,608 INFO L93 Difference]: Finished difference Result 116 states and 159 transitions. [2021-02-22 01:48:36,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-22 01:48:36,609 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2021-02-22 01:48:36,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:48:36,612 INFO L225 Difference]: With dead ends: 116 [2021-02-22 01:48:36,612 INFO L226 Difference]: Without dead ends: 72 [2021-02-22 01:48:36,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-02-22 01:48:36,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-02-22 01:48:36,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 60. [2021-02-22 01:48:36,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-02-22 01:48:36,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2021-02-22 01:48:36,654 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 59 [2021-02-22 01:48:36,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:48:36,656 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2021-02-22 01:48:36,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 01:48:36,656 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2021-02-22 01:48:36,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-02-22 01:48:36,665 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:48:36,666 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:48:36,667 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 01:48:36,667 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:48:36,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:48:36,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1197296150, now seen corresponding path program 3 times [2021-02-22 01:48:36,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:48:36,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381635288] [2021-02-22 01:48:36,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:48:36,672 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:48:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:36,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:36,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:36,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:36,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:36,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:36,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:36,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:48:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:36,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:36,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:36,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-22 01:48:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:36,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:36,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:36,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:36,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:36,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:36,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:36,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:36,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:36,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:36,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:36,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:36,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:36,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:36,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:36,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:36,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:36,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:36,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:36,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:48:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:36,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:36,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:36,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-22 01:48:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:36,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:36,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:36,963 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-02-22 01:48:36,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381635288] [2021-02-22 01:48:36,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:48:36,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-22 01:48:36,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767065737] [2021-02-22 01:48:36,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-22 01:48:36,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:48:36,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-22 01:48:36,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-02-22 01:48:36,968 INFO L87 Difference]: Start difference. First operand 60 states and 75 transitions. Second operand 10 states. [2021-02-22 01:48:37,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:48:37,462 INFO L93 Difference]: Finished difference Result 94 states and 122 transitions. [2021-02-22 01:48:37,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-22 01:48:37,463 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 60 [2021-02-22 01:48:37,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:48:37,466 INFO L225 Difference]: With dead ends: 94 [2021-02-22 01:48:37,466 INFO L226 Difference]: Without dead ends: 88 [2021-02-22 01:48:37,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-02-22 01:48:37,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-02-22 01:48:37,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 82. [2021-02-22 01:48:37,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-02-22 01:48:37,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 108 transitions. [2021-02-22 01:48:37,499 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 108 transitions. Word has length 60 [2021-02-22 01:48:37,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:48:37,499 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 108 transitions. [2021-02-22 01:48:37,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-22 01:48:37,499 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 108 transitions. [2021-02-22 01:48:37,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-02-22 01:48:37,503 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:48:37,503 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:48:37,503 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 01:48:37,503 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:48:37,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:48:37,504 INFO L82 PathProgramCache]: Analyzing trace with hash -801021678, now seen corresponding path program 4 times [2021-02-22 01:48:37,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:48:37,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121259731] [2021-02-22 01:48:37,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:48:37,507 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:48:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:37,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:37,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:37,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:37,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:37,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:37,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:37,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:48:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:37,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:37,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:37,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-22 01:48:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:37,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:37,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:37,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:37,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:37,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:37,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:37,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:37,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:37,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:37,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:37,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:37,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:37,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:37,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:37,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:37,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:37,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:37,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:37,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:37,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:37,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:37,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:37,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:37,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:37,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:37,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:48:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:37,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:37,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:37,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-22 01:48:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:37,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:37,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:37,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-22 01:48:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:37,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:37,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:37,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:37,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:37,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:37,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:37,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:37,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:37,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:37,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:37,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:37,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:48:37,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:37,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:37,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:37,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-22 01:48:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:37,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:37,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:37,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-22 01:48:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:37,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:37,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:38,015 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-02-22 01:48:38,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121259731] [2021-02-22 01:48:38,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:48:38,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-22 01:48:38,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720366330] [2021-02-22 01:48:38,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-22 01:48:38,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:48:38,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-22 01:48:38,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-02-22 01:48:38,018 INFO L87 Difference]: Start difference. First operand 82 states and 108 transitions. Second operand 12 states. [2021-02-22 01:48:38,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:48:38,678 INFO L93 Difference]: Finished difference Result 144 states and 197 transitions. [2021-02-22 01:48:38,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-22 01:48:38,679 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 131 [2021-02-22 01:48:38,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:48:38,693 INFO L225 Difference]: With dead ends: 144 [2021-02-22 01:48:38,694 INFO L226 Difference]: Without dead ends: 138 [2021-02-22 01:48:38,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2021-02-22 01:48:38,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-02-22 01:48:38,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 126. [2021-02-22 01:48:38,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2021-02-22 01:48:38,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 176 transitions. [2021-02-22 01:48:38,793 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 176 transitions. Word has length 131 [2021-02-22 01:48:38,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:48:38,794 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 176 transitions. [2021-02-22 01:48:38,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-22 01:48:38,794 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 176 transitions. [2021-02-22 01:48:38,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-02-22 01:48:38,806 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:48:38,807 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 17, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:48:38,807 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-22 01:48:38,807 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:48:38,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:48:38,808 INFO L82 PathProgramCache]: Analyzing trace with hash 900310772, now seen corresponding path program 5 times [2021-02-22 01:48:38,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:48:38,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424738570] [2021-02-22 01:48:38,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:48:38,814 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:48:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:38,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:38,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:38,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:38,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:38,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:38,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:38,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:48:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:38,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:38,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:38,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-22 01:48:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:38,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:38,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:38,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:38,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:38,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:38,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:39,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:39,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:39,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:39,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:39,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:39,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:39,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:39,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:39,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:39,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:39,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:39,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:39,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:39,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:39,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:39,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:39,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:39,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:39,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:39,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:39,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:39,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:39,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:39,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:39,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:39,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:39,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:48:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:39,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:39,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:39,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-22 01:48:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:39,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:39,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:39,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-22 01:48:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:39,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:39,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:39,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:39,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:39,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:39,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:48:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:39,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:39,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:39,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-02-22 01:48:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:39,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:39,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:39,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:39,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:39,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:39,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:39,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:39,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:39,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:39,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:39,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:39,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:39,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:39,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:39,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:39,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:48:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:39,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:39,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:39,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-22 01:48:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:39,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:39,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:39,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-22 01:48:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:39,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:39,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:39,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:39,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:39,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:39,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:48:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:39,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:39,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:39,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-02-22 01:48:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:39,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:39,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:39,387 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-02-22 01:48:39,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424738570] [2021-02-22 01:48:39,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:48:39,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-22 01:48:39,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861627702] [2021-02-22 01:48:39,389 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-22 01:48:39,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:48:39,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-22 01:48:39,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-02-22 01:48:39,390 INFO L87 Difference]: Start difference. First operand 126 states and 176 transitions. Second operand 14 states. [2021-02-22 01:48:40,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:48:40,162 INFO L93 Difference]: Finished difference Result 238 states and 346 transitions. [2021-02-22 01:48:40,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-22 01:48:40,163 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 201 [2021-02-22 01:48:40,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:48:40,167 INFO L225 Difference]: With dead ends: 238 [2021-02-22 01:48:40,168 INFO L226 Difference]: Without dead ends: 232 [2021-02-22 01:48:40,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=157, Invalid=395, Unknown=0, NotChecked=0, Total=552 [2021-02-22 01:48:40,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-02-22 01:48:40,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 214. [2021-02-22 01:48:40,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2021-02-22 01:48:40,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 318 transitions. [2021-02-22 01:48:40,223 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 318 transitions. Word has length 201 [2021-02-22 01:48:40,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:48:40,224 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 318 transitions. [2021-02-22 01:48:40,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-22 01:48:40,224 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 318 transitions. [2021-02-22 01:48:40,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-02-22 01:48:40,252 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:48:40,252 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 20, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:48:40,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-22 01:48:40,253 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:48:40,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:48:40,253 INFO L82 PathProgramCache]: Analyzing trace with hash -708907174, now seen corresponding path program 6 times [2021-02-22 01:48:40,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:48:40,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514461440] [2021-02-22 01:48:40,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:48:40,258 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:48:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:40,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:40,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:40,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:40,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:48:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:40,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:40,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-22 01:48:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:40,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:40,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:40,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:40,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:40,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:40,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:40,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:40,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:40,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:40,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:40,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:40,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:40,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:40,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:40,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:40,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:40,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:40,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:40,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:40,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:40,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:40,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:40,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:40,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:48:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:40,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:40,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-22 01:48:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:40,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:40,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-22 01:48:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:40,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:40,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:40,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:40,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:48:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:40,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:40,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-02-22 01:48:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:40,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:40,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:40,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:40,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:40,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:40,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:48:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:40,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:40,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-22 01:48:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:40,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:40,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-22 01:48:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:40,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:40,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:40,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:40,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:40,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:40,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:40,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:40,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:48:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:40,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:40,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-22 01:48:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:40,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:40,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-22 01:48:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:40,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:40,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:40,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:40,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:48:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:40,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:40,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-02-22 01:48:40,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514461440] [2021-02-22 01:48:40,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:48:40,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-22 01:48:40,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137834214] [2021-02-22 01:48:40,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-22 01:48:40,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:48:40,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-22 01:48:40,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-02-22 01:48:40,956 INFO L87 Difference]: Start difference. First operand 214 states and 318 transitions. Second operand 16 states. [2021-02-22 01:48:41,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:48:41,917 INFO L93 Difference]: Finished difference Result 420 states and 651 transitions. [2021-02-22 01:48:41,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-22 01:48:41,918 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 236 [2021-02-22 01:48:41,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:48:41,926 INFO L225 Difference]: With dead ends: 420 [2021-02-22 01:48:41,926 INFO L226 Difference]: Without dead ends: 414 [2021-02-22 01:48:41,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=214, Invalid=542, Unknown=0, NotChecked=0, Total=756 [2021-02-22 01:48:41,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-02-22 01:48:42,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 390. [2021-02-22 01:48:42,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2021-02-22 01:48:42,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 616 transitions. [2021-02-22 01:48:42,024 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 616 transitions. Word has length 236 [2021-02-22 01:48:42,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:48:42,025 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 616 transitions. [2021-02-22 01:48:42,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-22 01:48:42,025 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 616 transitions. [2021-02-22 01:48:42,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2021-02-22 01:48:42,036 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:48:42,037 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 38, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 15, 15, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:48:42,037 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-22 01:48:42,037 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:48:42,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:48:42,038 INFO L82 PathProgramCache]: Analyzing trace with hash -2112113873, now seen corresponding path program 7 times [2021-02-22 01:48:42,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:48:42,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185100710] [2021-02-22 01:48:42,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:48:42,043 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:48:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:42,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:42,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:42,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:42,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:48:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:42,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:42,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-22 01:48:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:42,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:42,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:42,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:42,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:42,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:42,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:42,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:42,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:42,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:42,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:42,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:42,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:42,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:42,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:42,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:42,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:42,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:42,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:42,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:42,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:42,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:42,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:42,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:42,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:42,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:42,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:42,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:48:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:42,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:42,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-22 01:48:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:42,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:42,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-22 01:48:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:42,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:42,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:42,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:42,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:48:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:42,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:42,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-02-22 01:48:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:42,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:42,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:42,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:42,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:42,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:42,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:42,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:48:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:42,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:42,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-22 01:48:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:42,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:42,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-22 01:48:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:42,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:42,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:42,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:42,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:42,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:42,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:42,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:42,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:48:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:42,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:42,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-22 01:48:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:42,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:42,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-22 01:48:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:42,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:42,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:42,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:42,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:48:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:42,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:42,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:42,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-02-22 01:48:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:43,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:43,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:43,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:43,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:43,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:43,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:43,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:43,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:43,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:43,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:43,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:43,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:43,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:43,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:43,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:43,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:43,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:48:43,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:43,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:43,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-22 01:48:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:43,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:43,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-22 01:48:43,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:43,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:43,177 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-22 01:48:43,178 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-22 01:48:43,197 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-22 01:48:43,198 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-22 01:48:43,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:43,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:43,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:43,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:48:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:43,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:43,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-02-22 01:48:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:43,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:43,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:43,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:43,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:43,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:43,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:48:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:43,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:43,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-22 01:48:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:43,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:43,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-02-22 01:48:43,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:43,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:43,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:43,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:43,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:43,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:43,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:43,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:43,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:48:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:43,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:43,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:43,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:48:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:43,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:43,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-22 01:48:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:43,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:43,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:43,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 219 proven. 251 refuted. 0 times theorem prover too weak. 856 trivial. 0 not checked. [2021-02-22 01:48:43,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185100710] [2021-02-22 01:48:43,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:48:43,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-02-22 01:48:43,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568172011] [2021-02-22 01:48:43,721 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-22 01:48:43,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:48:43,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-22 01:48:43,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2021-02-22 01:48:43,722 INFO L87 Difference]: Start difference. First operand 390 states and 616 transitions. Second operand 24 states. [2021-02-22 01:48:46,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:48:46,065 INFO L93 Difference]: Finished difference Result 532 states and 928 transitions. [2021-02-22 01:48:46,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-02-22 01:48:46,065 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 430 [2021-02-22 01:48:46,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:48:46,069 INFO L225 Difference]: With dead ends: 532 [2021-02-22 01:48:46,069 INFO L226 Difference]: Without dead ends: 155 [2021-02-22 01:48:46,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 772 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=565, Invalid=2297, Unknown=0, NotChecked=0, Total=2862 [2021-02-22 01:48:46,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-02-22 01:48:46,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 121. [2021-02-22 01:48:46,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2021-02-22 01:48:46,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 154 transitions. [2021-02-22 01:48:46,104 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 154 transitions. Word has length 430 [2021-02-22 01:48:46,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:48:46,105 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 154 transitions. [2021-02-22 01:48:46,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-22 01:48:46,106 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 154 transitions. [2021-02-22 01:48:46,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2021-02-22 01:48:46,113 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:48:46,113 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 33, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 13, 13, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:48:46,114 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-22 01:48:46,114 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:48:46,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:48:46,114 INFO L82 PathProgramCache]: Analyzing trace with hash -310760694, now seen corresponding path program 8 times [2021-02-22 01:48:46,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:48:46,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968038867] [2021-02-22 01:48:46,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:48:46,118 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:48:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:48:46,172 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:48:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:48:46,225 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:48:46,346 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:48:46,347 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:48:46,348 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-22 01:48:46,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:48:46 BoogieIcfgContainer [2021-02-22 01:48:46,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:48:46,389 INFO L168 Benchmark]: Toolchain (without parser) took 13975.45 ms. Allocated memory was 158.3 MB in the beginning and 509.6 MB in the end (delta: 351.3 MB). Free memory was 135.4 MB in the beginning and 208.7 MB in the end (delta: -73.3 MB). Peak memory consumption was 279.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:48:46,389 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 158.3 MB. Free memory was 131.9 MB in the beginning and 131.5 MB in the end (delta: 435.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:48:46,389 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.11 ms. Allocated memory is still 158.3 MB. Free memory was 134.4 MB in the beginning and 125.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:48:46,390 INFO L168 Benchmark]: Boogie Preprocessor took 32.23 ms. Allocated memory is still 158.3 MB. Free memory was 125.3 MB in the beginning and 123.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:48:46,390 INFO L168 Benchmark]: RCFGBuilder took 495.37 ms. Allocated memory is still 158.3 MB. Free memory was 123.8 MB in the beginning and 109.9 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-22 01:48:46,390 INFO L168 Benchmark]: TraceAbstraction took 13084.36 ms. Allocated memory was 158.3 MB in the beginning and 509.6 MB in the end (delta: 351.3 MB). Free memory was 109.6 MB in the beginning and 208.7 MB in the end (delta: -99.1 MB). Peak memory consumption was 253.2 MB. Max. memory is 8.0 GB. [2021-02-22 01:48:46,391 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 158.3 MB. Free memory was 131.9 MB in the beginning and 131.5 MB in the end (delta: 435.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 335.11 ms. Allocated memory is still 158.3 MB. Free memory was 134.4 MB in the beginning and 125.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.23 ms. Allocated memory is still 158.3 MB. Free memory was 125.3 MB in the beginning and 123.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 495.37 ms. Allocated memory is still 158.3 MB. Free memory was 123.8 MB in the beginning and 109.9 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 13084.36 ms. Allocated memory was 158.3 MB in the beginning and 509.6 MB in the end (delta: 351.3 MB). Free memory was 109.6 MB in the beginning and 208.7 MB in the end (delta: -99.1 MB). Peak memory consumption was 253.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 29]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L26] int x = 7; [L27] CALL, EXPR fibo(x) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L13] RET, EXPR fibo(n-1) [L13] CALL, EXPR fibo(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L13] RET, EXPR fibo(n-2) [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-1) [L13] CALL, EXPR fibo(n-2) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L13] RET, EXPR fibo(n-2) [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-1) [L13] CALL, EXPR fibo(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L13] RET, EXPR fibo(n-1) [L13] CALL, EXPR fibo(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L13] RET, EXPR fibo(n-2) [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-2) [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-1) [L13] CALL, EXPR fibo(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L13] RET, EXPR fibo(n-1) [L13] CALL, EXPR fibo(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L13] RET, EXPR fibo(n-2) [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-1) [L13] CALL, EXPR fibo(n-2) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L13] RET, EXPR fibo(n-2) [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-2) [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-1) [L13] CALL, EXPR fibo(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L13] RET, EXPR fibo(n-1) [L13] CALL, EXPR fibo(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L13] RET, EXPR fibo(n-2) [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-1) [L13] CALL, EXPR fibo(n-2) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L13] RET, EXPR fibo(n-2) [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-1) [L13] CALL, EXPR fibo(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L13] RET, EXPR fibo(n-1) [L13] CALL, EXPR fibo(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L13] RET, EXPR fibo(n-2) [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-2) [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-2) [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-1) [L13] CALL, EXPR fibo(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L13] RET, EXPR fibo(n-1) [L13] CALL, EXPR fibo(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L13] RET, EXPR fibo(n-2) [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-1) [L13] CALL, EXPR fibo(n-2) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L13] RET, EXPR fibo(n-2) [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-1) [L13] CALL, EXPR fibo(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L13] RET, EXPR fibo(n-1) [L13] CALL, EXPR fibo(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L13] RET, EXPR fibo(n-2) [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-2) [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-1) [L13] CALL, EXPR fibo(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L13] RET, EXPR fibo(n-1) [L13] CALL, EXPR fibo(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L13] RET, EXPR fibo(n-2) [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-1) [L13] CALL, EXPR fibo(n-2) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L13] RET, EXPR fibo(n-2) [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-2) [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-2) [L13] return fibo(n-1) + fibo(n-2); [L27] RET, EXPR fibo(x) [L27] int result = fibo(x); [L28] COND TRUE result == 13 [L29] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.9s, OverallIterations: 11, TraceHistogramMax: 47, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 380 SDtfs, 1045 SDslu, 617 SDs, 0 SdLazy, 1828 SolverSat, 757 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 471 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1197 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=390occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 108 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, 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 incorrect! Received shutdown request...