/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/id2_b3_o5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 22:55:58,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 22:55:58,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 22:55:58,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 22:55:59,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 22:55:59,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 22:55:59,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 22:55:59,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 22:55:59,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 22:55:59,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 22:55:59,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 22:55:59,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 22:55:59,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 22:55:59,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 22:55:59,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 22:55:59,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 22:55:59,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 22:55:59,060 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 22:55:59,074 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 22:55:59,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 22:55:59,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 22:55:59,077 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 22:55:59,077 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 22:55:59,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 22:55:59,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 22:55:59,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 22:55:59,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 22:55:59,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 22:55:59,078 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 22:55:59,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 22:55:59,079 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 22:55:59,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 22:55:59,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 22:55:59,080 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 22:55:59,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 22:55:59,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 22:55:59,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:55:59,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 22:55:59,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 22:55:59,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 22:55:59,081 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 22:55:59,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 22:55:59,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 22:55:59,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 22:55:59,583 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 22:55:59,584 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 22:55:59,585 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_b3_o5.c [2021-02-23 22:55:59,689 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073a1a8aa/18761008400c4edebc18122fa1441c3c/FLAG01c7766e3 [2021-02-23 22:56:00,417 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 22:56:00,418 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id2_b3_o5.c [2021-02-23 22:56:00,426 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073a1a8aa/18761008400c4edebc18122fa1441c3c/FLAG01c7766e3 [2021-02-23 22:56:00,825 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073a1a8aa/18761008400c4edebc18122fa1441c3c [2021-02-23 22:56:00,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 22:56:00,858 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 22:56:00,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 22:56:00,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 22:56:00,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 22:56:00,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:56:00" (1/1) ... [2021-02-23 22:56:00,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a2ee505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:00, skipping insertion in model container [2021-02-23 22:56:00,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:56:00" (1/1) ... [2021-02-23 22:56:00,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 22:56:00,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 22:56:01,133 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id2_b3_o5.c[771,784] [2021-02-23 22:56:01,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:56:01,149 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 22:56:01,170 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id2_b3_o5.c[771,784] [2021-02-23 22:56:01,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:56:01,189 INFO L208 MainTranslator]: Completed translation [2021-02-23 22:56:01,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:01 WrapperNode [2021-02-23 22:56:01,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 22:56:01,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 22:56:01,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 22:56:01,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 22:56:01,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:01" (1/1) ... [2021-02-23 22:56:01,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:01" (1/1) ... [2021-02-23 22:56:01,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:01" (1/1) ... [2021-02-23 22:56:01,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:01" (1/1) ... [2021-02-23 22:56:01,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:01" (1/1) ... [2021-02-23 22:56:01,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:01" (1/1) ... [2021-02-23 22:56:01,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:01" (1/1) ... [2021-02-23 22:56:01,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 22:56:01,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 22:56:01,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 22:56:01,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 22:56:01,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:56:01,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 22:56:01,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 22:56:01,353 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 22:56:01,353 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-02-23 22:56:01,354 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2021-02-23 22:56:01,354 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 22:56:01,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-23 22:56:01,354 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 22:56:01,354 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 22:56:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 22:56:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 22:56:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-02-23 22:56:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2021-02-23 22:56:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 22:56:01,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 22:56:01,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 22:56:01,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 22:56:01,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 22:56:01,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 22:56:01,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 22:56:01,865 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 22:56:01,865 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 22:56:01,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:56:01 BoogieIcfgContainer [2021-02-23 22:56:01,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 22:56:01,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 22:56:01,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 22:56:01,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 22:56:01,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:56:00" (1/3) ... [2021-02-23 22:56:01,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4a7778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:56:01, skipping insertion in model container [2021-02-23 22:56:01,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:01" (2/3) ... [2021-02-23 22:56:01,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4a7778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:56:01, skipping insertion in model container [2021-02-23 22:56:01,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:56:01" (3/3) ... [2021-02-23 22:56:01,879 INFO L111 eAbstractionObserver]: Analyzing ICFG id2_b3_o5.c [2021-02-23 22:56:01,888 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 22:56:01,894 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 22:56:01,915 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 22:56:01,943 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 22:56:01,943 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 22:56:01,943 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 22:56:01,944 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 22:56:01,944 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 22:56:01,944 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 22:56:01,944 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 22:56:01,944 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 22:56:01,962 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2021-02-23 22:56:01,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-23 22:56:01,974 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:01,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:56:01,975 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:01,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:01,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1880205997, now seen corresponding path program 1 times [2021-02-23 22:56:01,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:01,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134304716] [2021-02-23 22:56:01,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:02,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:02,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:02,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:02,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:02,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:02,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:02,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:02,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:02,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:02,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:02,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:02,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:02,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:02,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:02,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:02,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:02,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 22:56:02,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134304716] [2021-02-23 22:56:02,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:56:02,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 22:56:02,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3814556] [2021-02-23 22:56:02,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 22:56:02,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:02,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 22:56:02,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 22:56:02,626 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 6 states. [2021-02-23 22:56:03,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:03,376 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2021-02-23 22:56:03,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 22:56:03,379 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-02-23 22:56:03,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:03,393 INFO L225 Difference]: With dead ends: 60 [2021-02-23 22:56:03,394 INFO L226 Difference]: Without dead ends: 44 [2021-02-23 22:56:03,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-23 22:56:03,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-02-23 22:56:03,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-02-23 22:56:03,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-02-23 22:56:03,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-02-23 22:56:03,461 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 24 [2021-02-23 22:56:03,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:03,462 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-02-23 22:56:03,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 22:56:03,462 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-02-23 22:56:03,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-23 22:56:03,465 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:03,465 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] [2021-02-23 22:56:03,466 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 22:56:03,466 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:03,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:03,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1658084422, now seen corresponding path program 1 times [2021-02-23 22:56:03,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:03,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619893478] [2021-02-23 22:56:03,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:03,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:03,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:03,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:03,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:03,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:03,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:03,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:03,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:03,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:03,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:03,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:03,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:03,718 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:56:03,719 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:56:03,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:03,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:03,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:03,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:03,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:03,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:03,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:03,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:03,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 22:56:03,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619893478] [2021-02-23 22:56:03,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:56:03,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 22:56:03,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215494180] [2021-02-23 22:56:03,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 22:56:03,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:03,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 22:56:03,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 22:56:03,779 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 6 states. [2021-02-23 22:56:04,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:04,194 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2021-02-23 22:56:04,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 22:56:04,195 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2021-02-23 22:56:04,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:04,197 INFO L225 Difference]: With dead ends: 71 [2021-02-23 22:56:04,197 INFO L226 Difference]: Without dead ends: 52 [2021-02-23 22:56:04,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-23 22:56:04,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-23 22:56:04,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2021-02-23 22:56:04,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-02-23 22:56:04,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2021-02-23 22:56:04,219 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 33 [2021-02-23 22:56:04,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:04,219 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2021-02-23 22:56:04,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 22:56:04,220 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2021-02-23 22:56:04,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-23 22:56:04,221 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:04,221 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] [2021-02-23 22:56:04,222 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 22:56:04,222 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:04,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:04,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1671222138, now seen corresponding path program 1 times [2021-02-23 22:56:04,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:04,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378728483] [2021-02-23 22:56:04,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:04,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:04,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:04,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:04,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:04,288 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:56:04,289 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:56:04,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:04,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:04,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:04,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:04,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:04,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:04,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:04,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:04,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:04,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:04,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:04,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:04,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:04,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:04,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:04,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:04,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:04,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:04,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:04,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 22:56:04,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378728483] [2021-02-23 22:56:04,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:56:04,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 22:56:04,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258124695] [2021-02-23 22:56:04,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 22:56:04,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:04,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 22:56:04,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-02-23 22:56:04,519 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 9 states. [2021-02-23 22:56:05,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:05,059 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2021-02-23 22:56:05,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 22:56:05,060 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2021-02-23 22:56:05,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:05,067 INFO L225 Difference]: With dead ends: 57 [2021-02-23 22:56:05,067 INFO L226 Difference]: Without dead ends: 52 [2021-02-23 22:56:05,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-02-23 22:56:05,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-23 22:56:05,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2021-02-23 22:56:05,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-02-23 22:56:05,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-02-23 22:56:05,106 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 33 [2021-02-23 22:56:05,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:05,107 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-02-23 22:56:05,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 22:56:05,107 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-02-23 22:56:05,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-23 22:56:05,112 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:05,112 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:56:05,113 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 22:56:05,113 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:05,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:05,114 INFO L82 PathProgramCache]: Analyzing trace with hash -816709640, now seen corresponding path program 1 times [2021-02-23 22:56:05,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:05,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630249941] [2021-02-23 22:56:05,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:05,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:05,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:05,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:05,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:05,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:05,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:05,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:05,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:05,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:05,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:05,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:05,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:05,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:05,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:05,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:05,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:05,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:05,312 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:56:05,313 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:56:05,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:05,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:05,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:05,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:05,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:05,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:05,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:05,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-23 22:56:05,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630249941] [2021-02-23 22:56:05,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:56:05,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 22:56:05,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219617313] [2021-02-23 22:56:05,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 22:56:05,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:05,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 22:56:05,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 22:56:05,367 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 6 states. [2021-02-23 22:56:05,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:05,689 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2021-02-23 22:56:05,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 22:56:05,690 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2021-02-23 22:56:05,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:05,692 INFO L225 Difference]: With dead ends: 77 [2021-02-23 22:56:05,692 INFO L226 Difference]: Without dead ends: 58 [2021-02-23 22:56:05,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-23 22:56:05,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-02-23 22:56:05,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2021-02-23 22:56:05,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-02-23 22:56:05,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-02-23 22:56:05,711 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 42 [2021-02-23 22:56:05,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:05,711 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-02-23 22:56:05,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 22:56:05,712 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-02-23 22:56:05,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-23 22:56:05,713 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:05,713 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:56:05,714 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 22:56:05,714 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:05,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:05,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1880334392, now seen corresponding path program 1 times [2021-02-23 22:56:05,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:05,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476130623] [2021-02-23 22:56:05,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:05,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:05,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:05,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:05,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:05,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:05,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:05,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:05,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:05,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:05,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:05,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:05,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:05,839 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:56:05,841 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:56:05,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:05,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:05,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:05,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:05,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:05,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:05,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:05,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:05,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:05,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:05,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:05,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:05,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:05,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:05,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:05,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:05,981 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-23 22:56:05,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476130623] [2021-02-23 22:56:05,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:56:05,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 22:56:05,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919336641] [2021-02-23 22:56:05,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 22:56:05,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:05,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 22:56:05,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-02-23 22:56:05,985 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 9 states. [2021-02-23 22:56:06,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:06,639 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2021-02-23 22:56:06,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 22:56:06,640 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2021-02-23 22:56:06,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:06,642 INFO L225 Difference]: With dead ends: 83 [2021-02-23 22:56:06,642 INFO L226 Difference]: Without dead ends: 64 [2021-02-23 22:56:06,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-02-23 22:56:06,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-23 22:56:06,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2021-02-23 22:56:06,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-02-23 22:56:06,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2021-02-23 22:56:06,663 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 42 [2021-02-23 22:56:06,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:06,663 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2021-02-23 22:56:06,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 22:56:06,664 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2021-02-23 22:56:06,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-23 22:56:06,665 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:06,665 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:56:06,666 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 22:56:06,666 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:06,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:06,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1448972168, now seen corresponding path program 1 times [2021-02-23 22:56:06,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:06,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117856837] [2021-02-23 22:56:06,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:06,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:06,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:06,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:06,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:06,709 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:56:06,711 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:56:06,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:06,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:06,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:06,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:06,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:06,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:06,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:06,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:06,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:06,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:06,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:06,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:06,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:06,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:06,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:06,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:06,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:06,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:06,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:06,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:06,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:06,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:06,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:06,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:06,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:06,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:06,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:06,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:06,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-23 22:56:06,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117856837] [2021-02-23 22:56:06,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:56:06,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-02-23 22:56:06,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830977938] [2021-02-23 22:56:06,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 22:56:06,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:06,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 22:56:06,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-02-23 22:56:06,951 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 12 states. [2021-02-23 22:56:07,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:07,834 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2021-02-23 22:56:07,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 22:56:07,834 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2021-02-23 22:56:07,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:07,836 INFO L225 Difference]: With dead ends: 69 [2021-02-23 22:56:07,836 INFO L226 Difference]: Without dead ends: 64 [2021-02-23 22:56:07,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2021-02-23 22:56:07,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-23 22:56:07,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2021-02-23 22:56:07,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-02-23 22:56:07,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2021-02-23 22:56:07,858 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 42 [2021-02-23 22:56:07,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:07,859 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2021-02-23 22:56:07,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 22:56:07,859 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2021-02-23 22:56:07,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-23 22:56:07,861 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:07,861 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:56:07,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 22:56:07,862 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:07,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:07,863 INFO L82 PathProgramCache]: Analyzing trace with hash -732512891, now seen corresponding path program 1 times [2021-02-23 22:56:07,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:07,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792955012] [2021-02-23 22:56:07,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:07,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:07,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:07,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:07,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:07,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:07,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:07,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:07,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:07,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:07,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:07,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:07,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:07,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:08,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:08,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:08,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:08,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:08,032 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:56:08,033 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:56:08,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:08,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:08,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:08,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:08,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:08,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:08,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:08,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:08,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:08,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:08,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:08,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:08,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:08,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:08,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:08,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:08,158 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-02-23 22:56:08,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792955012] [2021-02-23 22:56:08,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:56:08,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 22:56:08,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631841029] [2021-02-23 22:56:08,160 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 22:56:08,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:08,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 22:56:08,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-02-23 22:56:08,162 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 9 states. [2021-02-23 22:56:08,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:08,721 INFO L93 Difference]: Finished difference Result 89 states and 96 transitions. [2021-02-23 22:56:08,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 22:56:08,722 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2021-02-23 22:56:08,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:08,725 INFO L225 Difference]: With dead ends: 89 [2021-02-23 22:56:08,725 INFO L226 Difference]: Without dead ends: 70 [2021-02-23 22:56:08,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-02-23 22:56:08,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-02-23 22:56:08,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2021-02-23 22:56:08,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-02-23 22:56:08,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2021-02-23 22:56:08,746 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 51 [2021-02-23 22:56:08,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:08,747 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2021-02-23 22:56:08,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 22:56:08,747 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2021-02-23 22:56:08,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-23 22:56:08,748 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:08,749 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:56:08,749 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 22:56:08,749 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:08,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:08,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1964531141, now seen corresponding path program 1 times [2021-02-23 22:56:08,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:08,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585241516] [2021-02-23 22:56:08,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:08,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:08,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:08,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:08,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:08,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:08,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:08,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:08,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:08,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:08,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:08,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:08,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:08,873 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:56:08,874 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:56:08,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:08,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:08,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:08,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:08,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:08,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:08,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:08,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:08,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:08,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:08,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:08,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:08,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:08,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:08,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:08,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:08,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:08,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:09,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:09,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:09,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:09,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:09,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:09,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:09,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:09,060 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-02-23 22:56:09,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585241516] [2021-02-23 22:56:09,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:56:09,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-02-23 22:56:09,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351351394] [2021-02-23 22:56:09,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 22:56:09,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:09,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 22:56:09,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-02-23 22:56:09,064 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 12 states. [2021-02-23 22:56:09,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:09,967 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2021-02-23 22:56:09,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 22:56:09,968 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2021-02-23 22:56:09,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:09,970 INFO L225 Difference]: With dead ends: 95 [2021-02-23 22:56:09,970 INFO L226 Difference]: Without dead ends: 76 [2021-02-23 22:56:09,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2021-02-23 22:56:09,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-02-23 22:56:09,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2021-02-23 22:56:09,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-23 22:56:09,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2021-02-23 22:56:09,992 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 51 [2021-02-23 22:56:09,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:09,993 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2021-02-23 22:56:09,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 22:56:09,993 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2021-02-23 22:56:09,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-23 22:56:09,995 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:09,995 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:56:09,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 22:56:09,995 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:09,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:09,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1364775419, now seen corresponding path program 1 times [2021-02-23 22:56:09,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:09,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633665299] [2021-02-23 22:56:09,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:10,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:10,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:10,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:10,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:10,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:10,035 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:56:10,037 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:56:10,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:10,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:10,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:10,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:10,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:10,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:10,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:10,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:10,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:10,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:10,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:10,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:10,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:10,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:10,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:10,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:10,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:10,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:10,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:10,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:10,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:10,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:10,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:10,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:10,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:10,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:10,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:10,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:10,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:10,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:10,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:10,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:10,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:10,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:10,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:10,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:10,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:10,330 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-02-23 22:56:10,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633665299] [2021-02-23 22:56:10,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:56:10,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-02-23 22:56:10,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99061772] [2021-02-23 22:56:10,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 22:56:10,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:10,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 22:56:10,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-02-23 22:56:10,333 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 15 states. [2021-02-23 22:56:11,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:11,569 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2021-02-23 22:56:11,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-23 22:56:11,570 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2021-02-23 22:56:11,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:11,572 INFO L225 Difference]: With dead ends: 83 [2021-02-23 22:56:11,572 INFO L226 Difference]: Without dead ends: 78 [2021-02-23 22:56:11,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=114, Invalid=878, Unknown=0, NotChecked=0, Total=992 [2021-02-23 22:56:11,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-02-23 22:56:11,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 62. [2021-02-23 22:56:11,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-02-23 22:56:11,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2021-02-23 22:56:11,592 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 51 [2021-02-23 22:56:11,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:11,593 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2021-02-23 22:56:11,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 22:56:11,593 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2021-02-23 22:56:11,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-02-23 22:56:11,594 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:11,594 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:56:11,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 22:56:11,595 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:11,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:11,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1358125059, now seen corresponding path program 1 times [2021-02-23 22:56:11,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:11,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498578009] [2021-02-23 22:56:11,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:11,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:11,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:11,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:11,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:11,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:11,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:11,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:11,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:11,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:11,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:11,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:11,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:11,764 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:56:11,766 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:56:11,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:11,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:11,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:11,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:11,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:11,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:11,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:11,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:11,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:11,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:11,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:11,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:11,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:11,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:11,986 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-02-23 22:56:11,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498578009] [2021-02-23 22:56:11,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:56:11,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-02-23 22:56:11,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46452040] [2021-02-23 22:56:11,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 22:56:11,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:11,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 22:56:11,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-02-23 22:56:11,990 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 12 states. [2021-02-23 22:56:12,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:12,859 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2021-02-23 22:56:12,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 22:56:12,861 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2021-02-23 22:56:12,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:12,863 INFO L225 Difference]: With dead ends: 103 [2021-02-23 22:56:12,863 INFO L226 Difference]: Without dead ends: 82 [2021-02-23 22:56:12,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2021-02-23 22:56:12,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-02-23 22:56:12,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2021-02-23 22:56:12,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-02-23 22:56:12,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2021-02-23 22:56:12,887 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 60 [2021-02-23 22:56:12,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:12,888 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2021-02-23 22:56:12,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 22:56:12,888 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2021-02-23 22:56:12,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-02-23 22:56:12,890 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:12,890 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:56:12,890 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 22:56:12,891 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:12,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:12,892 INFO L82 PathProgramCache]: Analyzing trace with hash -239798205, now seen corresponding path program 2 times [2021-02-23 22:56:12,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:12,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007968173] [2021-02-23 22:56:12,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:12,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:12,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:12,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:12,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:12,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:12,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:12,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:12,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:13,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:13,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:13,019 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-23 22:56:13,020 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-23 22:56:13,042 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-23 22:56:13,044 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-23 22:56:13,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:13,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:13,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:13,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:13,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:13,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:13,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:13,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:13,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:13,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:13,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:13,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:13,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:13,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:13,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:13,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:13,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:13,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:13,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:13,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:13,332 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-02-23 22:56:13,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007968173] [2021-02-23 22:56:13,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:56:13,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-02-23 22:56:13,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940252613] [2021-02-23 22:56:13,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 22:56:13,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:13,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 22:56:13,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-02-23 22:56:13,340 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 15 states. [2021-02-23 22:56:14,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:14,709 INFO L93 Difference]: Finished difference Result 111 states and 118 transitions. [2021-02-23 22:56:14,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-23 22:56:14,709 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 60 [2021-02-23 22:56:14,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:14,713 INFO L225 Difference]: With dead ends: 111 [2021-02-23 22:56:14,714 INFO L226 Difference]: Without dead ends: 90 [2021-02-23 22:56:14,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=114, Invalid=878, Unknown=0, NotChecked=0, Total=992 [2021-02-23 22:56:14,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-02-23 22:56:14,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2021-02-23 22:56:14,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-02-23 22:56:14,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2021-02-23 22:56:14,755 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 60 [2021-02-23 22:56:14,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:14,756 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2021-02-23 22:56:14,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 22:56:14,756 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2021-02-23 22:56:14,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-02-23 22:56:14,759 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:14,759 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:56:14,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 22:56:14,760 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:14,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:14,762 INFO L82 PathProgramCache]: Analyzing trace with hash 2028772996, now seen corresponding path program 2 times [2021-02-23 22:56:14,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:14,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233400511] [2021-02-23 22:56:14,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:14,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:14,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:14,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:14,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:14,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:14,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:14,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:14,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:14,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:14,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:14,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:14,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:14,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:14,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:14,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:14,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:14,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:14,949 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-23 22:56:14,950 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-23 22:56:14,974 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-23 22:56:14,975 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-23 22:56:14,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:14,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:14,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:15,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:15,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:15,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:15,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:15,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:15,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:15,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:15,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:15,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:15,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:15,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:15,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:15,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:15,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:15,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:15,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:15,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:15,302 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-02-23 22:56:15,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233400511] [2021-02-23 22:56:15,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:56:15,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-02-23 22:56:15,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128364757] [2021-02-23 22:56:15,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 22:56:15,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:15,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 22:56:15,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-02-23 22:56:15,305 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 15 states. [2021-02-23 22:56:16,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:16,584 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2021-02-23 22:56:16,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-23 22:56:16,585 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 69 [2021-02-23 22:56:16,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:16,586 INFO L225 Difference]: With dead ends: 101 [2021-02-23 22:56:16,586 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 22:56:16,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=114, Invalid=878, Unknown=0, NotChecked=0, Total=992 [2021-02-23 22:56:16,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 22:56:16,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 22:56:16,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 22:56:16,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 22:56:16,589 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2021-02-23 22:56:16,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:16,590 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 22:56:16,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 22:56:16,590 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 22:56:16,590 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 22:56:16,590 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-23 22:56:16,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 22:56:17,051 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2021-02-23 22:56:17,326 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2021-02-23 22:56:17,671 WARN L202 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 24 [2021-02-23 22:56:17,784 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 14 [2021-02-23 22:56:17,935 WARN L202 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 26 [2021-02-23 22:56:18,198 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 18 [2021-02-23 22:56:18,396 WARN L202 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 30 [2021-02-23 22:56:18,680 WARN L202 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 23 [2021-02-23 22:56:18,817 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 24 [2021-02-23 22:56:19,019 WARN L202 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 23 [2021-02-23 22:56:19,240 WARN L202 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 22 [2021-02-23 22:56:19,539 WARN L202 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2021-02-23 22:56:19,649 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 22 [2021-02-23 22:56:19,656 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-02-23 22:56:19,657 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-02-23 22:56:19,657 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-02-23 22:56:19,657 INFO L192 CegarLoopUtils]: At program point L4-3(line 4) the Hoare annotation is: true [2021-02-23 22:56:19,657 INFO L192 CegarLoopUtils]: At program point L4-4(line 4) the Hoare annotation is: true [2021-02-23 22:56:19,657 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 22:56:19,657 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 22:56:19,657 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 4) the Hoare annotation is: true [2021-02-23 22:56:19,658 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-23 22:56:19,658 INFO L192 CegarLoopUtils]: At program point L4(line 4) the Hoare annotation is: true [2021-02-23 22:56:19,658 INFO L192 CegarLoopUtils]: At program point L4-1(line 4) the Hoare annotation is: true [2021-02-23 22:56:19,658 INFO L192 CegarLoopUtils]: At program point L4-2(line 4) the Hoare annotation is: true [2021-02-23 22:56:19,658 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-23 22:56:19,658 INFO L185 CegarLoopUtils]: At program point L20(line 20) the Hoare annotation is: (or (and (<= id2_~ret~1 2) (<= 2 id2_~ret~1)) (and (<= 1 id2_~ret~1) (<= id2_~ret~1 1)) (and (<= 3 id2_~ret~1) (<= id2_~ret~1 3))) [2021-02-23 22:56:19,658 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (or (and (<= id2_~ret~1 2) (<= 2 id2_~ret~1)) (and (<= 1 id2_~ret~1) (<= id2_~ret~1 1)) (and (<= 4 id2_~ret~1) (<= (div id2_~ret~1 4294967296) 0)) (and (<= 3 id2_~ret~1) (<= id2_~ret~1 3))) [2021-02-23 22:56:19,658 INFO L185 CegarLoopUtils]: At program point id2FINAL(lines 16 21) the Hoare annotation is: (or (and (<= 1 id2_~ret~1) (<= |id2_#res| 1) (<= id2_~ret~1 1) (<= 1 |id2_#res|)) (and (<= |id2_#res| 0) (<= 0 |id2_#res|)) (and (<= 2 |id2_#res|) (<= id2_~ret~1 2) (<= |id2_#res| 2) (<= 2 id2_~ret~1)) (and (<= |id2_#res| 3) (<= 3 |id2_#res|))) [2021-02-23 22:56:19,658 INFO L192 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: true [2021-02-23 22:56:19,659 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (and (<= 4 id2_~ret~1) (<= (div id2_~ret~1 4294967296) 0)) [2021-02-23 22:56:19,659 INFO L192 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: true [2021-02-23 22:56:19,659 INFO L185 CegarLoopUtils]: At program point L18-1(line 18) the Hoare annotation is: (or (and (<= 0 |id2_#t~ret8|) (<= |id2_#t~ret8| 0)) (and (<= 2 |id2_#t~ret8|) (<= |id2_#t~ret8| 2)) (and (<= 3 |id2_#t~ret8|) (<= |id2_#t~ret8| 3)) (and (<= |id2_#t~ret8| 1) (<= 1 |id2_#t~ret8|))) [2021-02-23 22:56:19,659 INFO L192 CegarLoopUtils]: At program point L17-1(line 17) the Hoare annotation is: true [2021-02-23 22:56:19,659 INFO L185 CegarLoopUtils]: At program point L18-2(line 18) the Hoare annotation is: (or (and (<= 0 |id2_#t~ret8|) (<= 1 id2_~ret~1) (<= |id2_#t~ret8| 0) (<= id2_~ret~1 1)) (and (<= id2_~ret~1 2) (<= |id2_#t~ret8| 1) (<= 1 |id2_#t~ret8|) (<= 2 id2_~ret~1)) (and (<= 3 id2_~ret~1) (<= id2_~ret~1 3) (<= |id2_#t~ret8| 2) (<= 2 |id2_#t~ret8|)) (and (<= 3 |id2_#t~ret8|) (<= 4 id2_~ret~1) (<= |id2_#t~ret8| 3) (<= (div id2_~ret~1 4294967296) 0))) [2021-02-23 22:56:19,660 INFO L185 CegarLoopUtils]: At program point id2EXIT(lines 16 21) the Hoare annotation is: (or (and (<= 1 id2_~ret~1) (<= |id2_#res| 1) (<= id2_~ret~1 1) (<= 1 |id2_#res|)) (and (<= |id2_#res| 0) (<= 0 |id2_#res|)) (and (<= 2 |id2_#res|) (<= id2_~ret~1 2) (<= |id2_#res| 2) (<= 2 id2_~ret~1)) (and (<= |id2_#res| 3) (<= 3 |id2_#res|))) [2021-02-23 22:56:19,660 INFO L192 CegarLoopUtils]: At program point id2ENTRY(lines 16 21) the Hoare annotation is: true [2021-02-23 22:56:19,660 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-23 22:56:19,660 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 22:56:19,660 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 22:56:19,660 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-23 22:56:19,660 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) the Hoare annotation is: false [2021-02-23 22:56:19,660 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 23 29) the Hoare annotation is: true [2021-02-23 22:56:19,660 INFO L185 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: false [2021-02-23 22:56:19,660 INFO L185 CegarLoopUtils]: At program point L26(lines 26 28) the Hoare annotation is: (and (<= main_~result~0 3) (< 0 (+ (div main_~result~0 4294967296) 1))) [2021-02-23 22:56:19,661 INFO L185 CegarLoopUtils]: At program point L27-1(line 27) the Hoare annotation is: false [2021-02-23 22:56:19,661 INFO L192 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: true [2021-02-23 22:56:19,661 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 23 29) the Hoare annotation is: true [2021-02-23 22:56:19,661 INFO L192 CegarLoopUtils]: At program point L24(line 24) the Hoare annotation is: true [2021-02-23 22:56:19,661 INFO L185 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: (or (and (<= |main_#t~ret10| 3) (<= 3 |main_#t~ret10|)) (and (<= |main_#t~ret10| 2) (<= 2 |main_#t~ret10|)) (= |main_#t~ret10| 0) (and (<= |main_#t~ret10| 1) (<= 1 |main_#t~ret10|))) [2021-02-23 22:56:19,661 INFO L192 CegarLoopUtils]: At program point L26-2(lines 23 29) the Hoare annotation is: true [2021-02-23 22:56:19,661 INFO L185 CegarLoopUtils]: At program point L25-2(line 25) the Hoare annotation is: (let ((.cse0 (< 0 (+ (div main_~result~0 4294967296) 1)))) (or (and (<= main_~result~0 3) (<= |main_#t~ret10| 3) .cse0 (<= 3 |main_#t~ret10|)) (and (<= |main_#t~ret10| 1) (<= 1 |main_#t~ret10|) (<= main_~result~0 1) .cse0) (and (= main_~result~0 0) (= |main_#t~ret10| 0)) (and (<= main_~result~0 2) (<= |main_#t~ret10| 2) (<= 2 |main_#t~ret10|) .cse0))) [2021-02-23 22:56:19,661 INFO L185 CegarLoopUtils]: At program point idFINAL(lines 9 14) the Hoare annotation is: (or (and (<= |id_#res| 1) (<= id_~ret~0 1) (<= 1 |id_#res|) (<= 1 id_~ret~0)) (and (<= id_~ret~0 2) (<= 2 |id_#res|) (<= |id_#res| 2) (<= 2 id_~ret~0)) (and (<= 0 |id_#res|) (<= |id_#res| 0)) (and (<= |id_#res| 3) (<= 3 |id_#res|))) [2021-02-23 22:56:19,661 INFO L185 CegarLoopUtils]: At program point idEXIT(lines 9 14) the Hoare annotation is: (or (and (<= |id_#res| 1) (<= id_~ret~0 1) (<= 1 |id_#res|) (<= 1 id_~ret~0)) (and (<= id_~ret~0 2) (<= 2 |id_#res|) (<= |id_#res| 2) (<= 2 id_~ret~0)) (and (<= 0 |id_#res|) (<= |id_#res| 0)) (and (<= |id_#res| 3) (<= 3 |id_#res|))) [2021-02-23 22:56:19,662 INFO L192 CegarLoopUtils]: At program point idENTRY(lines 9 14) the Hoare annotation is: true [2021-02-23 22:56:19,662 INFO L185 CegarLoopUtils]: At program point L13(line 13) the Hoare annotation is: (or (and (<= id_~ret~0 2) (<= 2 id_~ret~0)) (and (<= 3 id_~ret~0) (<= id_~ret~0 3)) (and (<= id_~ret~0 1) (<= 1 id_~ret~0))) [2021-02-23 22:56:19,662 INFO L185 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: (or (and (<= 4 id_~ret~0) (<= (div id_~ret~0 4294967296) 0)) (and (<= id_~ret~0 2) (<= 2 id_~ret~0)) (and (<= 3 id_~ret~0) (<= id_~ret~0 3)) (and (<= id_~ret~0 1) (<= 1 id_~ret~0))) [2021-02-23 22:56:19,662 INFO L192 CegarLoopUtils]: At program point L11(line 11) the Hoare annotation is: true [2021-02-23 22:56:19,662 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-23 22:56:19,662 INFO L192 CegarLoopUtils]: At program point L10(line 10) the Hoare annotation is: true [2021-02-23 22:56:19,662 INFO L185 CegarLoopUtils]: At program point L11-1(line 11) the Hoare annotation is: (or (and (<= |id_#t~ret7| 1) (<= 1 |id_#t~ret7|)) (and (<= |id_#t~ret7| 2) (<= 2 |id_#t~ret7|)) (and (<= 0 |id_#t~ret7|) (<= |id_#t~ret7| 0)) (and (<= 3 |id_#t~ret7|) (<= |id_#t~ret7| 3))) [2021-02-23 22:56:19,662 INFO L192 CegarLoopUtils]: At program point L10-1(line 10) the Hoare annotation is: true [2021-02-23 22:56:19,663 INFO L185 CegarLoopUtils]: At program point L11-2(line 11) the Hoare annotation is: (or (and (<= 4 id_~ret~0) (<= 3 |id_#t~ret7|) (<= (div id_~ret~0 4294967296) 0) (<= |id_#t~ret7| 3)) (and (<= 3 id_~ret~0) (<= |id_#t~ret7| 2) (<= 2 |id_#t~ret7|) (<= id_~ret~0 3)) (and (<= id_~ret~0 2) (<= |id_#t~ret7| 1) (<= 1 |id_#t~ret7|) (<= 2 id_~ret~0)) (and (<= 0 |id_#t~ret7|) (<= id_~ret~0 1) (<= |id_#t~ret7| 0) (<= 1 id_~ret~0))) [2021-02-23 22:56:19,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:56:19 BoogieIcfgContainer [2021-02-23 22:56:19,687 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 22:56:19,688 INFO L168 Benchmark]: Toolchain (without parser) took 18849.59 ms. Allocated memory was 161.5 MB in the beginning and 338.7 MB in the end (delta: 177.2 MB). Free memory was 138.7 MB in the beginning and 175.1 MB in the end (delta: -36.4 MB). Peak memory consumption was 201.0 MB. Max. memory is 8.0 GB. [2021-02-23 22:56:19,689 INFO L168 Benchmark]: CDTParser took 1.53 ms. Allocated memory is still 161.5 MB. Free memory is still 135.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:56:19,689 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.85 ms. Allocated memory is still 161.5 MB. Free memory was 137.4 MB in the beginning and 128.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 22:56:19,689 INFO L168 Benchmark]: Boogie Preprocessor took 38.95 ms. Allocated memory is still 161.5 MB. Free memory was 128.0 MB in the beginning and 126.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 22:56:19,690 INFO L168 Benchmark]: RCFGBuilder took 636.21 ms. Allocated memory is still 161.5 MB. Free memory was 126.6 MB in the beginning and 142.7 MB in the end (delta: -16.2 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. [2021-02-23 22:56:19,690 INFO L168 Benchmark]: TraceAbstraction took 17817.35 ms. Allocated memory was 161.5 MB in the beginning and 338.7 MB in the end (delta: 177.2 MB). Free memory was 142.2 MB in the beginning and 175.1 MB in the end (delta: -32.9 MB). Peak memory consumption was 203.5 MB. Max. memory is 8.0 GB. [2021-02-23 22:56:19,692 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.53 ms. Allocated memory is still 161.5 MB. Free memory is still 135.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 328.85 ms. Allocated memory is still 161.5 MB. Free memory was 137.4 MB in the beginning and 128.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.95 ms. Allocated memory is still 161.5 MB. Free memory was 128.0 MB in the beginning and 126.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 636.21 ms. Allocated memory is still 161.5 MB. Free memory was 126.6 MB in the beginning and 142.7 MB in the end (delta: -16.2 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 17817.35 ms. Allocated memory was 161.5 MB in the beginning and 338.7 MB in the end (delta: 177.2 MB). Free memory was 142.2 MB in the beginning and 175.1 MB in the end (delta: -32.9 MB). Peak memory consumption was 203.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 16]: Procedure Contract for id2 Derived contract for procedure id2: (((((1 <= ret && \result <= 1) && ret <= 1) && 1 <= \result) || (\result <= 0 && 0 <= \result)) || (((2 <= \result && ret <= 2) && \result <= 2) && 2 <= ret)) || (\result <= 3 && 3 <= \result) - ProcedureContractResult [Line: 23]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 9]: Procedure Contract for id Derived contract for procedure id: (((((\result <= 1 && ret <= 1) && 1 <= \result) && 1 <= ret) || (((ret <= 2 && 2 <= \result) && \result <= 2) && 2 <= ret)) || (0 <= \result && \result <= 0)) || (\result <= 3 && 3 <= \result) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.6s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 9.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 517 SDtfs, 506 SDslu, 1378 SDs, 0 SdLazy, 3809 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 359 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 49 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 47 LocationsWithAnnotation, 58 PreInvPairs, 200 NumberOfFragments, 603 HoareAnnotationTreeSize, 58 FomulaSimplifications, 68689 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 47 FomulaSimplificationsInter, 5206 FormulaSimplificationTreeSizeReductionInter, 2.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 558 NumberOfCodeBlocks, 558 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 546 ConstructedInterpolants, 0 QuantifiedInterpolants, 97210 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 102/144 InterpolantCoveringCapability, 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...