/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/loops-crafted-1/nested5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:50:07,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:50:07,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:50:07,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 04:50:07,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:50:07,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:50:07,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:50:07,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:50:07,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:50:07,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:50:07,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:50:07,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:50:07,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:50:07,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:50:07,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:50:07,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:50:07,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:50:07,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:50:07,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:50:07,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:50:07,904 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:50:07,917 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:50:07,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:50:07,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:50:07,920 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:50:07,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:50:07,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:50:07,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:50:07,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:50:07,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:50:07,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:50:07,922 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:50:07,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:50:07,923 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:50:07,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:50:07,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:50:07,924 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:50:07,924 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:50:07,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:50:07,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:50:07,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:50:07,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:50:07,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:50:07,925 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:50:07,926 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:50:08,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:50:08,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:50:08,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:50:08,341 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:50:08,341 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:50:08,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested5-1.c [2021-02-24 04:50:08,415 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61c8f84a7/b1361f671a3d42f497fa9568e5ff9f9a/FLAG597ae75e4 [2021-02-24 04:50:09,124 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:50:09,125 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested5-1.c [2021-02-24 04:50:09,133 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61c8f84a7/b1361f671a3d42f497fa9568e5ff9f9a/FLAG597ae75e4 [2021-02-24 04:50:09,482 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61c8f84a7/b1361f671a3d42f497fa9568e5ff9f9a [2021-02-24 04:50:09,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:50:09,499 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:50:09,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:50:09,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:50:09,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:50:09,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:50:09" (1/1) ... [2021-02-24 04:50:09,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ea1b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:09, skipping insertion in model container [2021-02-24 04:50:09,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:50:09" (1/1) ... [2021-02-24 04:50:09,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:50:09,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:50:09,671 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested5-1.c[321,334] [2021-02-24 04:50:09,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:50:09,702 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:50:09,714 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested5-1.c[321,334] [2021-02-24 04:50:09,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:50:09,738 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:50:09,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:09 WrapperNode [2021-02-24 04:50:09,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:50:09,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:50:09,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:50:09,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:50:09,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:09" (1/1) ... [2021-02-24 04:50:09,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:09" (1/1) ... [2021-02-24 04:50:09,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:09" (1/1) ... [2021-02-24 04:50:09,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:09" (1/1) ... [2021-02-24 04:50:09,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:09" (1/1) ... [2021-02-24 04:50:09,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:09" (1/1) ... [2021-02-24 04:50:09,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:09" (1/1) ... [2021-02-24 04:50:09,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:50:09,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:50:09,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:50:09,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:50:09,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:50:09,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:50:09,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:50:09,913 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:50:09,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:50:09,913 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:50:09,913 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:50:09,913 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:50:09,914 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:50:09,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:50:09,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:50:09,915 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:50:09,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:50:09,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:50:09,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:50:09,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:50:09,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:50:09,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:50:10,348 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:50:10,349 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-24 04:50:10,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:50:10 BoogieIcfgContainer [2021-02-24 04:50:10,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:50:10,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:50:10,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:50:10,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:50:10,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:50:09" (1/3) ... [2021-02-24 04:50:10,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f50e639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:50:10, skipping insertion in model container [2021-02-24 04:50:10,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:50:09" (2/3) ... [2021-02-24 04:50:10,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f50e639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:50:10, skipping insertion in model container [2021-02-24 04:50:10,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:50:10" (3/3) ... [2021-02-24 04:50:10,378 INFO L111 eAbstractionObserver]: Analyzing ICFG nested5-1.c [2021-02-24 04:50:10,395 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:50:10,407 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:50:10,463 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:50:10,522 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:50:10,522 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:50:10,523 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:50:10,523 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:50:10,523 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:50:10,523 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:50:10,523 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:50:10,524 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:50:10,543 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2021-02-24 04:50:10,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-24 04:50:10,554 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:50:10,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:50:10,556 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:50:10,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:50:10,563 INFO L82 PathProgramCache]: Analyzing trace with hash -2146802473, now seen corresponding path program 1 times [2021-02-24 04:50:10,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:50:10,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294558152] [2021-02-24 04:50:10,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:50:10,657 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:50:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:10,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:10,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:10,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:10,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:10,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:50:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:11,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:11,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:11,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:50:11,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294558152] [2021-02-24 04:50:11,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:50:11,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 04:50:11,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702117363] [2021-02-24 04:50:11,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 04:50:11,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:50:11,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 04:50:11,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:50:11,058 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 3 states. [2021-02-24 04:50:11,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:50:11,161 INFO L93 Difference]: Finished difference Result 91 states and 112 transitions. [2021-02-24 04:50:11,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 04:50:11,163 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2021-02-24 04:50:11,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:50:11,175 INFO L225 Difference]: With dead ends: 91 [2021-02-24 04:50:11,175 INFO L226 Difference]: Without dead ends: 49 [2021-02-24 04:50:11,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:50:11,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-02-24 04:50:11,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-02-24 04:50:11,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-02-24 04:50:11,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2021-02-24 04:50:11,252 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 31 [2021-02-24 04:50:11,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:50:11,253 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2021-02-24 04:50:11,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 04:50:11,253 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2021-02-24 04:50:11,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-24 04:50:11,257 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:50:11,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:50:11,258 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:50:11,259 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:50:11,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:50:11,260 INFO L82 PathProgramCache]: Analyzing trace with hash 2140776655, now seen corresponding path program 1 times [2021-02-24 04:50:11,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:50:11,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576553598] [2021-02-24 04:50:11,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:50:11,264 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:50:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:11,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:11,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:11,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:11,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:50:11,346 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-02-24 04:50:11,348 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size 38 [2021-02-24 04:50:11,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:11,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:11,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:50:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:11,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:11,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:11,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:50:11,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576553598] [2021-02-24 04:50:11,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:50:11,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:50:11,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471507776] [2021-02-24 04:50:11,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:50:11,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:50:11,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:50:11,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:50:11,416 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 4 states. [2021-02-24 04:50:11,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:50:11,600 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2021-02-24 04:50:11,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:50:11,600 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2021-02-24 04:50:11,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:50:11,602 INFO L225 Difference]: With dead ends: 100 [2021-02-24 04:50:11,603 INFO L226 Difference]: Without dead ends: 69 [2021-02-24 04:50:11,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:50:11,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-02-24 04:50:11,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 50. [2021-02-24 04:50:11,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-02-24 04:50:11,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-02-24 04:50:11,621 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 31 [2021-02-24 04:50:11,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:50:11,622 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-02-24 04:50:11,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:50:11,622 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-02-24 04:50:11,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-24 04:50:11,624 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:50:11,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:50:11,624 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:50:11,625 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:50:11,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:50:11,625 INFO L82 PathProgramCache]: Analyzing trace with hash 619271948, now seen corresponding path program 1 times [2021-02-24 04:50:11,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:50:11,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176847795] [2021-02-24 04:50:11,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:50:11,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:11,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:50:11,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:11,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:50:11,747 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 04:50:11,763 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:50:11,769 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:11,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:11,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:11,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 04:50:11,780 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 04:50:11,785 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-02-24 04:50:11,789 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size 33 [2021-02-24 04:50:11,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:11,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:11,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:11,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:11,808 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:50:11,811 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:50:11,823 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:11,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:11,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:11,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:50:11,835 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:50:11,839 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:50:11,844 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:50:11,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:11,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:11,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:11,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:11,861 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:50:11,865 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:50:11,873 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:11,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:11,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:11,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:50:11,880 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:50:11,883 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:50:11,885 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:50:11,885 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:50:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:12,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:12,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:12,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:12,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:50:12,049 WARN L141 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-02-24 04:50:12,051 WARN L147 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size 13 [2021-02-24 04:50:12,061 WARN L141 QuantifierPusher]: treesize reduction 16, result has 30.4 percent of original size [2021-02-24 04:50:12,064 WARN L147 QuantifierPusher]: treesize reduction 16, result has 30.4 percent of original size 7 [2021-02-24 04:50:12,072 WARN L141 QuantifierPusher]: treesize reduction 2, result has 96.3 percent of original size [2021-02-24 04:50:12,076 WARN L147 QuantifierPusher]: treesize reduction 2, result has 96.3 percent of original size 52 [2021-02-24 04:50:12,108 WARN L141 QuantifierPusher]: treesize reduction 31, result has 56.9 percent of original size [2021-02-24 04:50:12,115 WARN L147 QuantifierPusher]: treesize reduction 31, result has 56.9 percent of original size 41 [2021-02-24 04:50:12,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:12,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:50:12,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:12,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:50:12,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:12,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:12,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:50:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:12,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:12,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:12,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:50:12,277 WARN L141 QuantifierPusher]: treesize reduction 9, result has 71.0 percent of original size [2021-02-24 04:50:12,278 WARN L147 QuantifierPusher]: treesize reduction 9, result has 71.0 percent of original size 22 [2021-02-24 04:50:12,280 WARN L141 QuantifierPusher]: treesize reduction 11, result has 59.3 percent of original size [2021-02-24 04:50:12,282 WARN L147 QuantifierPusher]: treesize reduction 11, result has 59.3 percent of original size 16 [2021-02-24 04:50:12,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:12,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:50:12,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:12,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:50:12,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:12,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:12,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:12,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:50:12,361 WARN L141 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-02-24 04:50:12,362 WARN L147 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size 1 [2021-02-24 04:50:12,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176847795] [2021-02-24 04:50:12,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:50:12,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-24 04:50:12,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481601591] [2021-02-24 04:50:12,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 04:50:12,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:50:12,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 04:50:12,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-02-24 04:50:12,365 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 10 states. [2021-02-24 04:50:12,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:50:12,754 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2021-02-24 04:50:12,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 04:50:12,754 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2021-02-24 04:50:12,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:50:12,756 INFO L225 Difference]: With dead ends: 105 [2021-02-24 04:50:12,756 INFO L226 Difference]: Without dead ends: 73 [2021-02-24 04:50:12,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-02-24 04:50:12,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-02-24 04:50:12,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 54. [2021-02-24 04:50:12,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-02-24 04:50:12,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2021-02-24 04:50:12,773 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 35 [2021-02-24 04:50:12,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:50:12,773 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2021-02-24 04:50:12,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 04:50:12,773 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2021-02-24 04:50:12,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-24 04:50:12,775 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:50:12,775 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:50:12,775 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 04:50:12,775 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:50:12,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:50:12,776 INFO L82 PathProgramCache]: Analyzing trace with hash 571317961, now seen corresponding path program 2 times [2021-02-24 04:50:12,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:50:12,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918486232] [2021-02-24 04:50:12,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:50:12,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:12,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:12,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:12,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:12,917 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:50:12,919 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:50:12,921 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:12,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:12,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:12,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:50:12,928 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:50:12,930 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:50:12,932 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:50:12,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:12,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:50:12,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:12,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:50:12,944 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 04:50:12,946 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:50:12,947 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:12,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:12,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:12,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 04:50:12,957 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 04:50:12,960 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-02-24 04:50:12,965 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size 33 [2021-02-24 04:50:12,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:12,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:12,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:12,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:12,985 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:50:12,988 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:50:12,994 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:12,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:12,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:13,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:50:13,003 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:50:13,006 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:50:13,014 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:50:13,014 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:50:13,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:13,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:13,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:13,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:13,030 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:50:13,036 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:50:13,039 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:13,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:13,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:13,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:50:13,053 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:50:13,058 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:50:13,062 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:50:13,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:13,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:50:13,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:13,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:50:13,081 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 04:50:13,083 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:50:13,085 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:13,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:13,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:13,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 04:50:13,098 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 04:50:13,103 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-02-24 04:50:13,106 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size 33 [2021-02-24 04:50:13,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:13,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:13,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:13,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:13,116 WARN L141 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size [2021-02-24 04:50:13,118 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:50:13,119 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:13,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:13,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:13,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 04:50:13,125 WARN L147 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size 20 [2021-02-24 04:50:13,127 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size [2021-02-24 04:50:13,129 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size 32 [2021-02-24 04:50:13,129 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:50:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:13,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:13,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:13,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:13,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:50:13,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:13,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:50:13,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:13,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:50:13,204 WARN L141 QuantifierPusher]: treesize reduction 4, result has 89.7 percent of original size [2021-02-24 04:50:13,205 WARN L147 QuantifierPusher]: treesize reduction 4, result has 89.7 percent of original size 35 [2021-02-24 04:50:13,258 WARN L141 QuantifierPusher]: treesize reduction 20, result has 69.7 percent of original size [2021-02-24 04:50:13,259 WARN L147 QuantifierPusher]: treesize reduction 20, result has 69.7 percent of original size 46 [2021-02-24 04:50:13,289 WARN L141 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-02-24 04:50:13,290 WARN L147 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size 9 [2021-02-24 04:50:13,300 WARN L141 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-02-24 04:50:13,301 WARN L147 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size 9 [2021-02-24 04:50:13,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:13,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:13,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:50:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:13,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:13,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:50:13,359 WARN L141 QuantifierPusher]: treesize reduction 11, result has 59.3 percent of original size [2021-02-24 04:50:13,360 WARN L147 QuantifierPusher]: treesize reduction 11, result has 59.3 percent of original size 16 [2021-02-24 04:50:13,361 WARN L141 QuantifierPusher]: treesize reduction 9, result has 71.0 percent of original size [2021-02-24 04:50:13,364 WARN L147 QuantifierPusher]: treesize reduction 9, result has 71.0 percent of original size 22 [2021-02-24 04:50:13,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:13,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:50:13,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:13,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:50:13,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:13,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:13,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:13,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:50:13,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:13,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:50:13,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:13,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:50:13,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:13,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:13,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:13,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:50:13,484 WARN L141 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-02-24 04:50:13,487 WARN L147 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size 1 [2021-02-24 04:50:13,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918486232] [2021-02-24 04:50:13,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:50:13,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-24 04:50:13,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6490553] [2021-02-24 04:50:13,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 04:50:13,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:50:13,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 04:50:13,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-02-24 04:50:13,490 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 13 states. [2021-02-24 04:50:14,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:50:14,072 INFO L93 Difference]: Finished difference Result 113 states and 125 transitions. [2021-02-24 04:50:14,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 04:50:14,073 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2021-02-24 04:50:14,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:50:14,074 INFO L225 Difference]: With dead ends: 113 [2021-02-24 04:50:14,075 INFO L226 Difference]: Without dead ends: 77 [2021-02-24 04:50:14,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-02-24 04:50:14,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-02-24 04:50:14,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 58. [2021-02-24 04:50:14,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-02-24 04:50:14,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2021-02-24 04:50:14,096 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 39 [2021-02-24 04:50:14,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:50:14,098 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2021-02-24 04:50:14,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 04:50:14,098 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2021-02-24 04:50:14,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-02-24 04:50:14,100 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:50:14,100 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:50:14,104 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-24 04:50:14,104 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:50:14,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:50:14,105 INFO L82 PathProgramCache]: Analyzing trace with hash -534921210, now seen corresponding path program 3 times [2021-02-24 04:50:14,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:50:14,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329668402] [2021-02-24 04:50:14,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:50:14,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:50:14,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:50:14,246 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 04:50:14,247 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:50:14,249 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:14,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 04:50:14,255 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 04:50:14,257 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-02-24 04:50:14,259 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size 33 [2021-02-24 04:50:14,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:14,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:14,270 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:50:14,271 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:50:14,273 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:14,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:50:14,278 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:50:14,280 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:50:14,282 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:50:14,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:14,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:14,292 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:50:14,294 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:50:14,295 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:14,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:50:14,300 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:50:14,302 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:50:14,304 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:50:14,305 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:50:14,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:14,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:14,315 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:50:14,316 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:50:14,318 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:14,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:50:14,323 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:50:14,325 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:50:14,326 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:50:14,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:14,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:14,336 WARN L141 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size [2021-02-24 04:50:14,337 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:50:14,339 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:14,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 04:50:14,344 WARN L147 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size 20 [2021-02-24 04:50:14,347 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size [2021-02-24 04:50:14,348 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size 32 [2021-02-24 04:50:14,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:50:14,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:50:14,359 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 04:50:14,360 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:50:14,361 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:14,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 04:50:14,367 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 04:50:14,369 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-02-24 04:50:14,370 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size 33 [2021-02-24 04:50:14,371 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:50:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:14,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:14,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:50:14,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:50:14,488 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-24 04:50:14,490 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-24 04:50:14,506 WARN L141 QuantifierPusher]: treesize reduction 2, result has 96.3 percent of original size [2021-02-24 04:50:14,507 WARN L147 QuantifierPusher]: treesize reduction 2, result has 96.3 percent of original size 52 [2021-02-24 04:50:14,550 WARN L141 QuantifierPusher]: treesize reduction 31, result has 56.9 percent of original size [2021-02-24 04:50:14,553 WARN L147 QuantifierPusher]: treesize reduction 31, result has 56.9 percent of original size 41 [2021-02-24 04:50:14,587 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:50:14,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:50:14,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:14,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:50:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:14,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:14,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:50:14,665 WARN L141 QuantifierPusher]: treesize reduction 9, result has 71.0 percent of original size [2021-02-24 04:50:14,666 WARN L147 QuantifierPusher]: treesize reduction 9, result has 71.0 percent of original size 22 [2021-02-24 04:50:14,668 WARN L141 QuantifierPusher]: treesize reduction 7, result has 76.7 percent of original size [2021-02-24 04:50:14,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:14,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 04:50:14,687 WARN L147 QuantifierPusher]: treesize reduction 7, result has 76.7 percent of original size 23 [2021-02-24 04:50:14,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:50:14,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:50:14,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:14,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:50:14,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:50:14,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:50:14,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:14,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:50:14,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:50:14,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:50:14,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:14,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:14,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:50:14,901 WARN L141 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-02-24 04:50:14,901 WARN L147 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size 1 [2021-02-24 04:50:14,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329668402] [2021-02-24 04:50:14,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:50:14,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-24 04:50:14,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678943846] [2021-02-24 04:50:14,902 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-24 04:50:14,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:50:14,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-24 04:50:14,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-02-24 04:50:14,904 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 16 states. [2021-02-24 04:50:15,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:50:15,772 INFO L93 Difference]: Finished difference Result 121 states and 133 transitions. [2021-02-24 04:50:15,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-24 04:50:15,773 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 43 [2021-02-24 04:50:15,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:50:15,775 INFO L225 Difference]: With dead ends: 121 [2021-02-24 04:50:15,776 INFO L226 Difference]: Without dead ends: 81 [2021-02-24 04:50:15,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2021-02-24 04:50:15,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-02-24 04:50:15,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 62. [2021-02-24 04:50:15,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-02-24 04:50:15,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2021-02-24 04:50:15,794 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 43 [2021-02-24 04:50:15,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:50:15,795 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2021-02-24 04:50:15,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-24 04:50:15,795 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2021-02-24 04:50:15,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-24 04:50:15,796 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:50:15,796 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:50:15,797 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-02-24 04:50:15,797 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:50:15,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:50:15,797 INFO L82 PathProgramCache]: Analyzing trace with hash -359597373, now seen corresponding path program 4 times [2021-02-24 04:50:15,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:50:15,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707304020] [2021-02-24 04:50:15,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:50:15,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:15,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:50:15,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:15,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:50:15,952 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 04:50:15,954 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:50:15,956 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:15,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:15,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:15,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 04:50:15,962 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 04:50:15,965 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-02-24 04:50:15,968 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size 33 [2021-02-24 04:50:15,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:15,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:15,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:15,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:15,981 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:50:15,982 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:50:15,984 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:15,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:15,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:15,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:50:15,990 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:50:15,993 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:50:15,994 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:50:15,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:15,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:15,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:16,010 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:50:16,012 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:50:16,013 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:16,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:50:16,020 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:50:16,022 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:50:16,024 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:50:16,025 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:50:16,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:16,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:16,039 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:50:16,041 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:50:16,043 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:16,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:50:16,048 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:50:16,052 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:50:16,054 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:50:16,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:50:16,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:50:16,067 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 04:50:16,069 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:50:16,070 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:16,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 04:50:16,077 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 04:50:16,079 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-02-24 04:50:16,086 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size 33 [2021-02-24 04:50:16,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:16,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:16,097 WARN L141 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size [2021-02-24 04:50:16,099 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:50:16,100 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:16,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 04:50:16,106 WARN L147 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size 20 [2021-02-24 04:50:16,108 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size [2021-02-24 04:50:16,110 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size 32 [2021-02-24 04:50:16,110 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:50:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:16,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:16,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:50:16,217 WARN L141 QuantifierPusher]: treesize reduction 43, result has 17.3 percent of original size [2021-02-24 04:50:16,217 WARN L147 QuantifierPusher]: treesize reduction 43, result has 17.3 percent of original size 9 [2021-02-24 04:50:16,221 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-24 04:50:16,222 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-24 04:50:16,224 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size [2021-02-24 04:50:16,225 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size 39 [2021-02-24 04:50:16,261 WARN L141 QuantifierPusher]: treesize reduction 12, result has 89.3 percent of original size [2021-02-24 04:50:16,263 WARN L147 QuantifierPusher]: treesize reduction 12, result has 89.3 percent of original size 100 [2021-02-24 04:50:16,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:50:16,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:50:16,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:16,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:50:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:16,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:16,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:50:16,417 WARN L141 QuantifierPusher]: treesize reduction 9, result has 71.0 percent of original size [2021-02-24 04:50:16,418 WARN L147 QuantifierPusher]: treesize reduction 9, result has 71.0 percent of original size 22 [2021-02-24 04:50:16,419 WARN L141 QuantifierPusher]: treesize reduction 4, result has 85.2 percent of original size [2021-02-24 04:50:16,420 WARN L147 QuantifierPusher]: treesize reduction 4, result has 85.2 percent of original size 23 [2021-02-24 04:50:16,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:50:16,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:50:16,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:16,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:50:16,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:50:16,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:50:16,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:16,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:50:16,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:50:16,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:50:16,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:16,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:50:16,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:50:16,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:50:16,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:16,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:16,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 04:50:16,715 WARN L141 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-02-24 04:50:16,716 WARN L147 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size 1 [2021-02-24 04:50:16,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707304020] [2021-02-24 04:50:16,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:50:16,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-24 04:50:16,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175842650] [2021-02-24 04:50:16,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-24 04:50:16,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:50:16,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-24 04:50:16,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-02-24 04:50:16,719 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 19 states. [2021-02-24 04:50:17,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:50:17,751 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2021-02-24 04:50:17,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-24 04:50:17,751 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2021-02-24 04:50:17,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:50:17,753 INFO L225 Difference]: With dead ends: 129 [2021-02-24 04:50:17,753 INFO L226 Difference]: Without dead ends: 85 [2021-02-24 04:50:17,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 6 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=140, Invalid=916, Unknown=0, NotChecked=0, Total=1056 [2021-02-24 04:50:17,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-02-24 04:50:17,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 66. [2021-02-24 04:50:17,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-02-24 04:50:17,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2021-02-24 04:50:17,772 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 47 [2021-02-24 04:50:17,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:50:17,772 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2021-02-24 04:50:17,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-24 04:50:17,773 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2021-02-24 04:50:17,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-24 04:50:17,773 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:50:17,774 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:50:17,774 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-02-24 04:50:17,774 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:50:17,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:50:17,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1086419200, now seen corresponding path program 5 times [2021-02-24 04:50:17,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:50:17,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411718871] [2021-02-24 04:50:17,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:50:17,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:17,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:17,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:17,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:17,918 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:50:17,920 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:50:17,922 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:17,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:17,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:17,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:50:17,927 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:50:17,929 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:50:17,932 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:50:17,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:17,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:17,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:17,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:17,942 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:50:17,943 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:50:17,944 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:17,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:17,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:17,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:50:17,949 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:50:17,952 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:50:17,954 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:50:17,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:17,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:50:17,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:17,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:50:17,964 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 04:50:17,965 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:50:17,967 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:17,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:17,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:17,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 04:50:17,971 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 04:50:17,973 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-02-24 04:50:17,975 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size 33 [2021-02-24 04:50:17,975 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:50:17,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:17,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:17,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:17,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:17,984 WARN L141 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-02-24 04:50:17,985 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:50:17,987 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:17,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:17,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:17,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 04:50:17,994 WARN L147 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size 19 [2021-02-24 04:50:17,996 WARN L141 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size [2021-02-24 04:50:17,999 WARN L147 QuantifierPusher]: treesize reduction 5, result has 85.7 percent of original size 30 [2021-02-24 04:50:18,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:50:18,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:50:18,008 WARN L141 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size [2021-02-24 04:50:18,012 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:50:18,014 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:18,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 04:50:18,021 WARN L147 QuantifierPusher]: treesize reduction 8, result has 72.4 percent of original size 21 [2021-02-24 04:50:18,023 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size [2021-02-24 04:50:18,025 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.8 percent of original size 33 [2021-02-24 04:50:18,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:18,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 04:50:18,034 WARN L141 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size [2021-02-24 04:50:18,036 INFO L723 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2021-02-24 04:50:18,040 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:18,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 04:50:18,050 WARN L147 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size 20 [2021-02-24 04:50:18,053 WARN L141 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size [2021-02-24 04:50:18,055 WARN L147 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size 32 [2021-02-24 04:50:18,055 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:50:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:18,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:18,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:50:18,192 WARN L141 QuantifierPusher]: treesize reduction 20, result has 31.0 percent of original size [2021-02-24 04:50:18,192 WARN L147 QuantifierPusher]: treesize reduction 20, result has 31.0 percent of original size 9 [2021-02-24 04:50:18,202 WARN L141 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-02-24 04:50:18,204 WARN L147 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size 7 [2021-02-24 04:50:18,209 WARN L141 QuantifierPusher]: treesize reduction 33, result has 51.5 percent of original size [2021-02-24 04:50:18,210 WARN L147 QuantifierPusher]: treesize reduction 33, result has 51.5 percent of original size 35 [2021-02-24 04:50:18,240 WARN L141 QuantifierPusher]: treesize reduction 37, result has 59.8 percent of original size [2021-02-24 04:50:18,243 WARN L147 QuantifierPusher]: treesize reduction 37, result has 59.8 percent of original size 55 [2021-02-24 04:50:18,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:50:18,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:50:18,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:18,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:50:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:50:18,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:50:18,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:50:18,338 WARN L141 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size [2021-02-24 04:50:18,339 WARN L147 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size 20 [2021-02-24 04:50:18,340 WARN L141 QuantifierPusher]: treesize reduction 4, result has 87.5 percent of original size [2021-02-24 04:50:18,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:50:18,342 WARN L141 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size [2021-02-24 04:50:18,343 WARN L147 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size 20 [2021-02-24 04:50:18,343 WARN L147 QuantifierPusher]: treesize reduction 4, result has 87.5 percent of original size 28 [2021-02-24 04:50:18,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-24 04:50:18,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:50:18,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-24 04:50:18,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-24 04:50:18,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 04:50:18,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 04:50:18,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-24 04:50:18,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:50:18,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 04:50:18,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 04:50:18,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-24 04:50:18,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:50:18,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 04:50:18,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 04:50:18,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-24 04:50:18,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:50:18,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 04:50:18,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:18,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 04:50:19,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:19,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-24 04:50:19,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:50:19,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 04:50:19,115 WARN L141 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-02-24 04:50:19,115 WARN L147 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size 1 [2021-02-24 04:50:19,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411718871] [2021-02-24 04:50:19,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:50:19,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-02-24 04:50:19,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941196397] [2021-02-24 04:50:19,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-02-24 04:50:19,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:50:19,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-02-24 04:50:19,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=616, Unknown=0, NotChecked=0, Total=812 [2021-02-24 04:50:19,118 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 27 states. [2021-02-24 04:50:20,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:50:20,928 INFO L93 Difference]: Finished difference Result 85 states and 92 transitions. [2021-02-24 04:50:20,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-24 04:50:20,928 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 51 [2021-02-24 04:50:20,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:50:20,930 INFO L225 Difference]: With dead ends: 85 [2021-02-24 04:50:20,931 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 04:50:20,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=583, Invalid=2279, Unknown=0, NotChecked=0, Total=2862 [2021-02-24 04:50:20,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 04:50:20,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 04:50:20,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 04:50:20,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 04:50:20,938 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2021-02-24 04:50:20,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:50:20,938 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 04:50:20,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-02-24 04:50:20,939 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 04:50:20,939 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 04:50:20,939 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-02-24 04:50:20,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 04:50:22,106 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 8 [2021-02-24 04:50:22,252 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 13 [2021-02-24 04:50:23,021 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-24 04:50:23,021 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-24 04:50:23,021 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-24 04:50:23,021 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-24 04:50:23,022 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-24 04:50:23,022 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:50:23,022 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-24 04:50:23,022 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 04:50:23,022 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-24 04:50:23,022 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-24 04:50:23,022 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-24 04:50:23,022 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-24 04:50:23,022 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 04:50:23,023 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 04:50:23,023 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:50:23,023 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 04:50:23,023 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 04:50:23,023 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 12 27) the Hoare annotation is: true [2021-02-24 04:50:23,023 INFO L185 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: (and (< 0 (+ main_~v~0 1)) (<= main_~v~0 10)) [2021-02-24 04:50:23,023 INFO L185 CegarLoopUtils]: At program point L23-3(line 23) the Hoare annotation is: (and (< 0 (+ main_~v~0 1)) (<= main_~v~0 10) (< (mod main_~v~0 4294967296) 10)) [2021-02-24 04:50:23,024 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= main_~v~0 0) [2021-02-24 04:50:23,024 INFO L185 CegarLoopUtils]: At program point L23-4(line 23) the Hoare annotation is: (and (< 0 (+ main_~v~0 1)) (= main_~v~0 |main_#t~post11|) (<= main_~v~0 10) (< (mod main_~v~0 4294967296) 10)) [2021-02-24 04:50:23,024 INFO L185 CegarLoopUtils]: At program point L23-5(line 23) the Hoare annotation is: (let ((.cse0 (+ |main_#t~post11| 1))) (and (< (mod |main_#t~post11| 4294967296) 10) (< 0 .cse0) (= main_~v~0 .cse0) (<= |main_#t~post11| 10))) [2021-02-24 04:50:23,024 INFO L185 CegarLoopUtils]: At program point L23-6(line 23) the Hoare annotation is: (and (< 0 (+ main_~v~0 1)) (<= main_~v~0 10)) [2021-02-24 04:50:23,025 INFO L185 CegarLoopUtils]: At program point L23-7(line 23) the Hoare annotation is: (let ((.cse0 (div main_~v~0 4294967296))) (and (<= (+ (* 4294967296 .cse0) 10) main_~v~0) (< 0 (+ .cse0 1)) (<= main_~v~0 10))) [2021-02-24 04:50:23,025 INFO L185 CegarLoopUtils]: At program point L19-3(lines 19 25) the Hoare annotation is: (and (< 0 (+ main_~v~0 1)) (<= main_~v~0 10)) [2021-02-24 04:50:23,025 INFO L192 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: true [2021-02-24 04:50:23,025 INFO L185 CegarLoopUtils]: At program point L19-4(line 19) the Hoare annotation is: (and (< 0 (+ main_~v~0 1)) (<= main_~v~0 10)) [2021-02-24 04:50:23,025 INFO L185 CegarLoopUtils]: At program point L19-5(line 19) the Hoare annotation is: (and (< 0 (+ main_~v~0 1)) (<= main_~v~0 10)) [2021-02-24 04:50:23,025 INFO L185 CegarLoopUtils]: At program point L19-6(lines 19 25) the Hoare annotation is: (and (< 0 (+ main_~v~0 1)) (<= main_~v~0 10)) [2021-02-24 04:50:23,026 INFO L192 CegarLoopUtils]: At program point L19-7(lines 19 25) the Hoare annotation is: true [2021-02-24 04:50:23,026 INFO L185 CegarLoopUtils]: At program point L24(lines 22 25) the Hoare annotation is: (let ((.cse0 (div main_~v~0 4294967296))) (and (<= (+ (* 4294967296 .cse0) 10) main_~v~0) (< 0 (+ .cse0 1)) (<= main_~v~0 10))) [2021-02-24 04:50:23,026 INFO L185 CegarLoopUtils]: At program point L20(line 20) the Hoare annotation is: (and (< 0 (+ main_~v~0 1)) (<= main_~v~0 10)) [2021-02-24 04:50:23,026 INFO L185 CegarLoopUtils]: At program point L20-3(lines 20 25) the Hoare annotation is: (and (< 0 (+ main_~v~0 1)) (<= main_~v~0 10)) [2021-02-24 04:50:23,026 INFO L192 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: true [2021-02-24 04:50:23,026 INFO L185 CegarLoopUtils]: At program point L20-4(line 20) the Hoare annotation is: (and (< 0 (+ main_~v~0 1)) (<= main_~v~0 10)) [2021-02-24 04:50:23,027 INFO L185 CegarLoopUtils]: At program point L20-5(line 20) the Hoare annotation is: (and (< 0 (+ main_~v~0 1)) (<= main_~v~0 10)) [2021-02-24 04:50:23,027 INFO L185 CegarLoopUtils]: At program point L20-6(lines 20 25) the Hoare annotation is: (and (< 0 (+ main_~v~0 1)) (<= main_~v~0 10)) [2021-02-24 04:50:23,027 INFO L185 CegarLoopUtils]: At program point L21(line 21) the Hoare annotation is: (and (< 0 (+ main_~v~0 1)) (<= main_~v~0 10)) [2021-02-24 04:50:23,027 INFO L185 CegarLoopUtils]: At program point L21-3(lines 21 25) the Hoare annotation is: (and (< 0 (+ main_~v~0 1)) (<= main_~v~0 10)) [2021-02-24 04:50:23,027 INFO L192 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: true [2021-02-24 04:50:23,027 INFO L185 CegarLoopUtils]: At program point L21-4(line 21) the Hoare annotation is: (and (< 0 (+ main_~v~0 1)) (<= main_~v~0 10)) [2021-02-24 04:50:23,028 INFO L185 CegarLoopUtils]: At program point L21-5(line 21) the Hoare annotation is: (and (< 0 (+ main_~v~0 1)) (<= main_~v~0 10)) [2021-02-24 04:50:23,028 INFO L185 CegarLoopUtils]: At program point L21-6(lines 21 25) the Hoare annotation is: (and (< 0 (+ main_~v~0 1)) (<= main_~v~0 10)) [2021-02-24 04:50:23,028 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 12 27) the Hoare annotation is: true [2021-02-24 04:50:23,028 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 12 27) the Hoare annotation is: true [2021-02-24 04:50:23,028 INFO L185 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: (and (< 0 (+ main_~v~0 1)) (<= main_~v~0 10)) [2021-02-24 04:50:23,028 INFO L185 CegarLoopUtils]: At program point L22-3(line 22) the Hoare annotation is: (let ((.cse0 (div main_~v~0 4294967296))) (and (<= (+ (* 4294967296 .cse0) 10) main_~v~0) (< 0 (+ .cse0 1)) (<= main_~v~0 10))) [2021-02-24 04:50:23,029 INFO L192 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: true [2021-02-24 04:50:23,029 INFO L185 CegarLoopUtils]: At program point L22-4(line 22) the Hoare annotation is: (let ((.cse0 (div main_~v~0 4294967296))) (and (<= (+ (* 4294967296 .cse0) 10) main_~v~0) (< 0 (+ .cse0 1)) (<= main_~v~0 10))) [2021-02-24 04:50:23,029 INFO L185 CegarLoopUtils]: At program point L22-5(lines 22 25) the Hoare annotation is: (and (< 0 (+ main_~v~0 1)) (<= main_~v~0 10)) [2021-02-24 04:50:23,029 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-02-24 04:50:23,029 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: (or (<= (+ __VERIFIER_assert_~cond 2) 0) (and (not (<= 2 |__VERIFIER_assert_#in~cond|)) (not (<= (+ |__VERIFIER_assert_#in~cond| 2) 0))) (<= 2 __VERIFIER_assert_~cond)) [2021-02-24 04:50:23,029 INFO L185 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (and (not (<= 2 |__VERIFIER_assert_#in~cond|)) (not (<= (+ |__VERIFIER_assert_#in~cond| 2) 0))) [2021-02-24 04:50:23,030 INFO L185 CegarLoopUtils]: At program point L6(lines 6 8) the Hoare annotation is: (or (<= (+ __VERIFIER_assert_~cond 2) 0) (and (not (<= 2 |__VERIFIER_assert_#in~cond|)) (not (<= (+ |__VERIFIER_assert_#in~cond| 2) 0))) (<= 2 __VERIFIER_assert_~cond)) [2021-02-24 04:50:23,030 INFO L185 CegarLoopUtils]: At program point L7-1(line 7) the Hoare annotation is: (and (not (<= 2 |__VERIFIER_assert_#in~cond|)) (not (<= (+ |__VERIFIER_assert_#in~cond| 2) 0))) [2021-02-24 04:50:23,030 INFO L185 CegarLoopUtils]: At program point L6-2(lines 5 10) the Hoare annotation is: (or (<= (+ __VERIFIER_assert_~cond 2) 0) (and (not (<= 2 |__VERIFIER_assert_#in~cond|)) (not (<= (+ |__VERIFIER_assert_#in~cond| 2) 0))) (<= 2 __VERIFIER_assert_~cond)) [2021-02-24 04:50:23,030 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: (and (not (<= 2 |__VERIFIER_assert_#in~cond|)) (not (<= (+ |__VERIFIER_assert_#in~cond| 2) 0))) [2021-02-24 04:50:23,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:50:23 BoogieIcfgContainer [2021-02-24 04:50:23,051 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:50:23,052 INFO L168 Benchmark]: Toolchain (without parser) took 13564.98 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 127.8 MB in the beginning and 262.7 MB in the end (delta: -134.9 MB). Peak memory consumption was 149.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:50:23,052 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:50:23,052 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.51 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 117.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 04:50:23,053 INFO L168 Benchmark]: Boogie Preprocessor took 43.24 ms. Allocated memory is still 151.0 MB. Free memory was 117.1 MB in the beginning and 115.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:50:23,053 INFO L168 Benchmark]: RCFGBuilder took 572.24 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 129.5 MB in the end (delta: -13.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-24 04:50:23,053 INFO L168 Benchmark]: TraceAbstraction took 12692.20 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 129.0 MB in the beginning and 262.7 MB in the end (delta: -133.7 MB). Peak memory consumption was 151.1 MB. Max. memory is 8.0 GB. [2021-02-24 04:50:23,054 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 238.51 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 117.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.24 ms. Allocated memory is still 151.0 MB. Free memory was 117.1 MB in the beginning and 115.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 572.24 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 129.5 MB in the end (delta: -13.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 12692.20 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 129.0 MB in the beginning and 262.7 MB in the end (delta: -133.7 MB). Peak memory consumption was 151.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 0 < v + 1 && v <= 10 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 < v + 1 && v <= 10 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 0 < v + 1 && v <= 10 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 0 < v + 1 && v <= 10 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 0 < v + 1 && v <= 10 - ProcedureContractResult [Line: 12]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: (cond + 2 <= 0 || (!(2 <= \old(cond)) && !(\old(cond) + 2 <= 0))) || 2 <= cond - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.4s, OverallIterations: 7, TraceHistogramMax: 5, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 381 SDtfs, 673 SDslu, 524 SDs, 0 SdLazy, 2339 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 202 GetRequests, 34 SyntacticMatches, 23 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1130 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 95 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 55 LocationsWithAnnotation, 97 PreInvPairs, 165 NumberOfFragments, 441 HoareAnnotationTreeSize, 97 FomulaSimplifications, 81180 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 55 FomulaSimplificationsInter, 3063 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...