/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/loop-lit/bhmr2007.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:20:46,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:20:46,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:20:46,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:20:46,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:20:46,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:20:46,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:20:46,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:20:46,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:20:46,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:20:46,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:20:46,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:20:46,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:20:46,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:20:46,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:20:46,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:20:46,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 00:20:46,499 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:20:46,524 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:20:46,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:20:46,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:20:46,529 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:20:46,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:20:46,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:20:46,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:20:46,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:20:46,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:20:46,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:20:46,532 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:20:46,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:20:46,532 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:20:46,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:20:46,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:20:46,533 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:20:46,534 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:20:46,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:20:46,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:20:46,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:20:46,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:20:46,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:20:46,535 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:20:47,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:20:47,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:20:47,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:20:47,055 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:20:47,056 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:20:47,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/bhmr2007.i [2021-02-24 00:20:47,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5e520bfd/f055ea17d21c4273ae67b1403889765f/FLAG235cd05f1 [2021-02-24 00:20:47,757 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:20:47,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/bhmr2007.i [2021-02-24 00:20:47,766 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5e520bfd/f055ea17d21c4273ae67b1403889765f/FLAG235cd05f1 [2021-02-24 00:20:48,128 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5e520bfd/f055ea17d21c4273ae67b1403889765f [2021-02-24 00:20:48,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:20:48,147 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:20:48,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:20:48,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:20:48,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:20:48,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:20:48" (1/1) ... [2021-02-24 00:20:48,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ff53f9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:48, skipping insertion in model container [2021-02-24 00:20:48,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:20:48" (1/1) ... [2021-02-24 00:20:48,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:20:48,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:20:48,442 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/bhmr2007.i[895,908] [2021-02-24 00:20:48,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:20:48,479 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:20:48,499 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/bhmr2007.i[895,908] [2021-02-24 00:20:48,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:20:48,540 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:20:48,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:48 WrapperNode [2021-02-24 00:20:48,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:20:48,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:20:48,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:20:48,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:20:48,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:48" (1/1) ... [2021-02-24 00:20:48,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:48" (1/1) ... [2021-02-24 00:20:48,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:48" (1/1) ... [2021-02-24 00:20:48,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:48" (1/1) ... [2021-02-24 00:20:48,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:48" (1/1) ... [2021-02-24 00:20:48,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:48" (1/1) ... [2021-02-24 00:20:48,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:48" (1/1) ... [2021-02-24 00:20:48,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:20:48,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:20:48,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:20:48,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:20:48,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:20:48,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:20:48,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:20:48,730 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:20:48,731 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:20:48,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:20:48,732 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:20:48,732 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:20:48,732 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:20:48,732 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-24 00:20:48,732 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-24 00:20:48,733 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:20:48,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:20:48,733 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:20:48,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:20:48,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:20:48,734 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:20:48,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:20:48,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:20:48,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:20:48,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:20:48,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:20:48,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:20:49,074 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:20:49,075 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 00:20:49,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:20:49 BoogieIcfgContainer [2021-02-24 00:20:49,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:20:49,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:20:49,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:20:49,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:20:49,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:20:48" (1/3) ... [2021-02-24 00:20:49,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328e6f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:20:49, skipping insertion in model container [2021-02-24 00:20:49,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:48" (2/3) ... [2021-02-24 00:20:49,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328e6f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:20:49, skipping insertion in model container [2021-02-24 00:20:49,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:20:49" (3/3) ... [2021-02-24 00:20:49,087 INFO L111 eAbstractionObserver]: Analyzing ICFG bhmr2007.i [2021-02-24 00:20:49,100 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:20:49,111 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:20:49,150 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:20:49,185 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:20:49,185 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:20:49,186 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:20:49,186 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:20:49,186 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:20:49,186 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:20:49,187 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:20:49,187 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:20:49,210 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2021-02-24 00:20:49,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-24 00:20:49,232 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:49,236 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] [2021-02-24 00:20:49,237 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:49,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:49,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1301066525, now seen corresponding path program 1 times [2021-02-24 00:20:49,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:49,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964538816] [2021-02-24 00:20:49,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:49,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:49,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:49,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:49,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:49,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:49,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:49,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:49,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:20:49,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:49,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:20:49,775 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:20:49,779 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:20:49,841 WARN L141 QuantifierPusher]: treesize reduction 10, result has 75.6 percent of original size [2021-02-24 00:20:49,845 WARN L147 QuantifierPusher]: treesize reduction 10, result has 75.6 percent of original size 31 [2021-02-24 00:20:49,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:49,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:49,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:49,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:49,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:49,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:49,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:49,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:49,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:50,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:20:50,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964538816] [2021-02-24 00:20:50,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:20:50,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-24 00:20:50,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28175424] [2021-02-24 00:20:50,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 00:20:50,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:50,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 00:20:50,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-02-24 00:20:50,030 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 10 states. [2021-02-24 00:20:50,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:50,673 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2021-02-24 00:20:50,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 00:20:50,675 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2021-02-24 00:20:50,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:50,685 INFO L225 Difference]: With dead ends: 78 [2021-02-24 00:20:50,685 INFO L226 Difference]: Without dead ends: 47 [2021-02-24 00:20:50,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2021-02-24 00:20:50,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-02-24 00:20:50,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 38. [2021-02-24 00:20:50,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-02-24 00:20:50,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2021-02-24 00:20:50,768 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 27 [2021-02-24 00:20:50,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:50,769 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2021-02-24 00:20:50,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 00:20:50,769 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2021-02-24 00:20:50,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-24 00:20:50,770 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:50,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:50,771 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:20:50,771 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:50,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:50,772 INFO L82 PathProgramCache]: Analyzing trace with hash 981129577, now seen corresponding path program 1 times [2021-02-24 00:20:50,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:50,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972854141] [2021-02-24 00:20:50,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:50,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:50,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:50,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:50,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:50,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:50,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:50,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:50,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:20:50,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:50,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:20:50,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:50,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-24 00:20:50,984 WARN L141 QuantifierPusher]: treesize reduction 10, result has 78.7 percent of original size [2021-02-24 00:20:50,987 WARN L147 QuantifierPusher]: treesize reduction 10, result has 78.7 percent of original size 37 [2021-02-24 00:20:51,026 WARN L141 QuantifierPusher]: treesize reduction 18, result has 58.1 percent of original size [2021-02-24 00:20:51,028 WARN L147 QuantifierPusher]: treesize reduction 18, result has 58.1 percent of original size 25 [2021-02-24 00:20:51,067 WARN L141 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size [2021-02-24 00:20:51,068 WARN L147 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size 17 [2021-02-24 00:20:51,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:51,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:51,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:51,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:51,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:51,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:51,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:51,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:51,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:51,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:20:51,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972854141] [2021-02-24 00:20:51,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:51,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-02-24 00:20:51,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319805525] [2021-02-24 00:20:51,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 00:20:51,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:51,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 00:20:51,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-02-24 00:20:51,184 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 13 states. [2021-02-24 00:20:51,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:51,846 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2021-02-24 00:20:51,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-24 00:20:51,847 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2021-02-24 00:20:51,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:51,851 INFO L225 Difference]: With dead ends: 60 [2021-02-24 00:20:51,851 INFO L226 Difference]: Without dead ends: 55 [2021-02-24 00:20:51,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2021-02-24 00:20:51,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-02-24 00:20:51,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 45. [2021-02-24 00:20:51,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-02-24 00:20:51,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2021-02-24 00:20:51,884 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 34 [2021-02-24 00:20:51,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:51,885 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2021-02-24 00:20:51,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 00:20:51,886 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2021-02-24 00:20:51,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-24 00:20:51,887 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:51,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:51,888 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:20:51,888 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:51,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:51,892 INFO L82 PathProgramCache]: Analyzing trace with hash 2144366633, now seen corresponding path program 1 times [2021-02-24 00:20:51,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:51,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237012055] [2021-02-24 00:20:51,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:51,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:51,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:51,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:51,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:51,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:51,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:51,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:51,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:20:52,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:20:52,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-24 00:20:52,043 WARN L141 QuantifierPusher]: treesize reduction 10, result has 78.7 percent of original size [2021-02-24 00:20:52,045 WARN L147 QuantifierPusher]: treesize reduction 10, result has 78.7 percent of original size 37 [2021-02-24 00:20:52,079 WARN L141 QuantifierPusher]: treesize reduction 18, result has 58.1 percent of original size [2021-02-24 00:20:52,081 WARN L147 QuantifierPusher]: treesize reduction 18, result has 58.1 percent of original size 25 [2021-02-24 00:20:52,100 WARN L141 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size [2021-02-24 00:20:52,106 WARN L147 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size 17 [2021-02-24 00:20:52,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:52,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:52,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:52,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:52,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:52,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:20:52,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237012055] [2021-02-24 00:20:52,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:52,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-02-24 00:20:52,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527949795] [2021-02-24 00:20:52,186 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 00:20:52,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:52,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 00:20:52,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-02-24 00:20:52,187 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 13 states. [2021-02-24 00:20:52,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:52,879 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2021-02-24 00:20:52,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-24 00:20:52,879 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2021-02-24 00:20:52,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:52,881 INFO L225 Difference]: With dead ends: 61 [2021-02-24 00:20:52,881 INFO L226 Difference]: Without dead ends: 56 [2021-02-24 00:20:52,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2021-02-24 00:20:52,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-02-24 00:20:52,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2021-02-24 00:20:52,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-02-24 00:20:52,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2021-02-24 00:20:52,897 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 34 [2021-02-24 00:20:52,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:52,898 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2021-02-24 00:20:52,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 00:20:52,898 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2021-02-24 00:20:52,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-24 00:20:52,899 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:52,900 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-24 00:20:52,900 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:20:52,900 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:52,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:52,901 INFO L82 PathProgramCache]: Analyzing trace with hash -917551715, now seen corresponding path program 2 times [2021-02-24 00:20:52,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:52,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156712526] [2021-02-24 00:20:52,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:52,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:52,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:52,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:52,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:52,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:20:52,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:53,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:20:53,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:53,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-24 00:20:53,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:53,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:20:53,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:53,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:20:53,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:53,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 00:20:53,071 WARN L141 QuantifierPusher]: treesize reduction 18, result has 60.0 percent of original size [2021-02-24 00:20:53,076 WARN L147 QuantifierPusher]: treesize reduction 18, result has 60.0 percent of original size 27 [2021-02-24 00:20:53,103 WARN L141 QuantifierPusher]: treesize reduction 18, result has 58.1 percent of original size [2021-02-24 00:20:53,104 WARN L147 QuantifierPusher]: treesize reduction 18, result has 58.1 percent of original size 25 [2021-02-24 00:20:53,126 WARN L141 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size [2021-02-24 00:20:53,127 WARN L147 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size 17 [2021-02-24 00:20:53,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:53,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:53,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:53,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:53,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:53,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:53,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:53,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:53,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:53,239 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:20:53,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156712526] [2021-02-24 00:20:53,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:53,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-02-24 00:20:53,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070182944] [2021-02-24 00:20:53,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-24 00:20:53,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:53,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-24 00:20:53,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-02-24 00:20:53,242 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 16 states. [2021-02-24 00:20:54,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:54,323 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2021-02-24 00:20:54,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-24 00:20:54,324 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2021-02-24 00:20:54,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:54,326 INFO L225 Difference]: With dead ends: 71 [2021-02-24 00:20:54,328 INFO L226 Difference]: Without dead ends: 66 [2021-02-24 00:20:54,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2021-02-24 00:20:54,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-02-24 00:20:54,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 55. [2021-02-24 00:20:54,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-02-24 00:20:54,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2021-02-24 00:20:54,367 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 41 [2021-02-24 00:20:54,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:54,369 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2021-02-24 00:20:54,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-24 00:20:54,370 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2021-02-24 00:20:54,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-24 00:20:54,375 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:54,375 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:54,375 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 00:20:54,375 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:54,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:54,377 INFO L82 PathProgramCache]: Analyzing trace with hash 245685341, now seen corresponding path program 1 times [2021-02-24 00:20:54,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:54,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171455139] [2021-02-24 00:20:54,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:54,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:54,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:54,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:54,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:54,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:54,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:54,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:54,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:20:54,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:54,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:20:54,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:54,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-24 00:20:54,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:54,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:20:54,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:54,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:20:54,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:54,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 00:20:54,601 WARN L141 QuantifierPusher]: treesize reduction 18, result has 60.0 percent of original size [2021-02-24 00:20:54,603 WARN L147 QuantifierPusher]: treesize reduction 18, result has 60.0 percent of original size 27 [2021-02-24 00:20:54,627 WARN L141 QuantifierPusher]: treesize reduction 18, result has 58.1 percent of original size [2021-02-24 00:20:54,629 WARN L147 QuantifierPusher]: treesize reduction 18, result has 58.1 percent of original size 25 [2021-02-24 00:20:54,657 WARN L141 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size [2021-02-24 00:20:54,658 WARN L147 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size 17 [2021-02-24 00:20:54,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:54,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:54,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:54,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:54,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:54,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:54,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:54,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:54,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:54,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:20:54,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171455139] [2021-02-24 00:20:54,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:54,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-02-24 00:20:54,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13100238] [2021-02-24 00:20:54,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-24 00:20:54,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:54,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-24 00:20:54,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-02-24 00:20:54,777 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 16 states. [2021-02-24 00:20:55,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:55,817 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2021-02-24 00:20:55,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-24 00:20:55,817 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2021-02-24 00:20:55,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:55,819 INFO L225 Difference]: With dead ends: 73 [2021-02-24 00:20:55,819 INFO L226 Difference]: Without dead ends: 68 [2021-02-24 00:20:55,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=173, Invalid=883, Unknown=0, NotChecked=0, Total=1056 [2021-02-24 00:20:55,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-02-24 00:20:55,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 55. [2021-02-24 00:20:55,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-02-24 00:20:55,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2021-02-24 00:20:55,837 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 41 [2021-02-24 00:20:55,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:55,837 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2021-02-24 00:20:55,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-24 00:20:55,837 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2021-02-24 00:20:55,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-24 00:20:55,838 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:55,839 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:55,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 00:20:55,839 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:55,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:55,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1551460643, now seen corresponding path program 2 times [2021-02-24 00:20:55,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:55,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219773082] [2021-02-24 00:20:55,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:55,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:55,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:55,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:55,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:55,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:55,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:55,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:55,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:20:55,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:55,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:20:55,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:55,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-24 00:20:55,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:55,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:20:55,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:55,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:20:55,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:55,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 00:20:55,978 WARN L141 QuantifierPusher]: treesize reduction 18, result has 60.0 percent of original size [2021-02-24 00:20:55,979 WARN L147 QuantifierPusher]: treesize reduction 18, result has 60.0 percent of original size 27 [2021-02-24 00:20:55,999 WARN L141 QuantifierPusher]: treesize reduction 18, result has 58.1 percent of original size [2021-02-24 00:20:56,000 WARN L147 QuantifierPusher]: treesize reduction 18, result has 58.1 percent of original size 25 [2021-02-24 00:20:56,023 WARN L141 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size [2021-02-24 00:20:56,023 WARN L147 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size 17 [2021-02-24 00:20:56,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:56,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:56,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:56,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:56,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:56,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:56,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:56,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:56,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:56,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:20:56,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219773082] [2021-02-24 00:20:56,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:56,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-02-24 00:20:56,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455165774] [2021-02-24 00:20:56,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-24 00:20:56,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:56,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-24 00:20:56,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-02-24 00:20:56,131 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 16 states. [2021-02-24 00:20:57,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:57,133 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2021-02-24 00:20:57,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-24 00:20:57,133 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2021-02-24 00:20:57,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:57,134 INFO L225 Difference]: With dead ends: 81 [2021-02-24 00:20:57,135 INFO L226 Difference]: Without dead ends: 76 [2021-02-24 00:20:57,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=173, Invalid=883, Unknown=0, NotChecked=0, Total=1056 [2021-02-24 00:20:57,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-02-24 00:20:57,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 62. [2021-02-24 00:20:57,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-02-24 00:20:57,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2021-02-24 00:20:57,154 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 41 [2021-02-24 00:20:57,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:57,155 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2021-02-24 00:20:57,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-24 00:20:57,155 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2021-02-24 00:20:57,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-24 00:20:57,156 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:57,156 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-24 00:20:57,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 00:20:57,156 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:57,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:57,157 INFO L82 PathProgramCache]: Analyzing trace with hash -388223587, now seen corresponding path program 2 times [2021-02-24 00:20:57,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:57,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098338190] [2021-02-24 00:20:57,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:57,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:57,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:57,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:57,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:57,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:57,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:57,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:57,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:20:57,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:57,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:20:57,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:57,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-24 00:20:57,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:57,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:20:57,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:57,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:20:57,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:57,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 00:20:57,332 WARN L141 QuantifierPusher]: treesize reduction 18, result has 60.0 percent of original size [2021-02-24 00:20:57,334 WARN L147 QuantifierPusher]: treesize reduction 18, result has 60.0 percent of original size 27 [2021-02-24 00:20:57,359 WARN L141 QuantifierPusher]: treesize reduction 18, result has 58.1 percent of original size [2021-02-24 00:20:57,363 WARN L147 QuantifierPusher]: treesize reduction 18, result has 58.1 percent of original size 25 [2021-02-24 00:20:57,385 WARN L141 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size [2021-02-24 00:20:57,386 WARN L147 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size 17 [2021-02-24 00:20:57,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:57,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:57,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:57,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:57,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:57,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:57,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:57,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:57,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:57,471 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:20:57,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098338190] [2021-02-24 00:20:57,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:57,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-02-24 00:20:57,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389858237] [2021-02-24 00:20:57,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-24 00:20:57,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:57,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-24 00:20:57,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-02-24 00:20:57,473 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 16 states. [2021-02-24 00:20:58,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:58,373 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2021-02-24 00:20:58,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-24 00:20:58,373 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2021-02-24 00:20:58,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:58,374 INFO L225 Difference]: With dead ends: 81 [2021-02-24 00:20:58,375 INFO L226 Difference]: Without dead ends: 76 [2021-02-24 00:20:58,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2021-02-24 00:20:58,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-02-24 00:20:58,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 58. [2021-02-24 00:20:58,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-02-24 00:20:58,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2021-02-24 00:20:58,391 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 41 [2021-02-24 00:20:58,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:58,392 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2021-02-24 00:20:58,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-24 00:20:58,392 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2021-02-24 00:20:58,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-24 00:20:58,393 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:58,393 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:58,393 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 00:20:58,394 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:58,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:58,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1129941271, now seen corresponding path program 3 times [2021-02-24 00:20:58,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:58,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864074058] [2021-02-24 00:20:58,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:58,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:58,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:58,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:58,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:20:58,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:20:58,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-24 00:20:58,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:20:58,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:20:58,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:20:58,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:20:58,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:20:58,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 00:20:58,559 WARN L141 QuantifierPusher]: treesize reduction 18, result has 60.0 percent of original size [2021-02-24 00:20:58,560 WARN L147 QuantifierPusher]: treesize reduction 18, result has 60.0 percent of original size 27 [2021-02-24 00:20:58,581 WARN L141 QuantifierPusher]: treesize reduction 18, result has 58.1 percent of original size [2021-02-24 00:20:58,582 WARN L147 QuantifierPusher]: treesize reduction 18, result has 58.1 percent of original size 25 [2021-02-24 00:20:58,604 WARN L141 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size [2021-02-24 00:20:58,605 WARN L147 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size 17 [2021-02-24 00:20:58,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:58,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:58,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:58,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:58,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:58,721 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-24 00:20:58,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864074058] [2021-02-24 00:20:58,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:58,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-02-24 00:20:58,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976462634] [2021-02-24 00:20:58,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-24 00:20:58,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:58,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-24 00:20:58,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-02-24 00:20:58,725 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 18 states. [2021-02-24 00:20:59,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:59,758 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2021-02-24 00:20:59,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-24 00:20:59,758 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 48 [2021-02-24 00:20:59,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:59,759 INFO L225 Difference]: With dead ends: 85 [2021-02-24 00:20:59,760 INFO L226 Difference]: Without dead ends: 80 [2021-02-24 00:20:59,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=178, Invalid=944, Unknown=0, NotChecked=0, Total=1122 [2021-02-24 00:20:59,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-02-24 00:20:59,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2021-02-24 00:20:59,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2021-02-24 00:20:59,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 74 transitions. [2021-02-24 00:20:59,780 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 74 transitions. Word has length 48 [2021-02-24 00:20:59,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:59,780 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 74 transitions. [2021-02-24 00:20:59,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-24 00:20:59,781 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 74 transitions. [2021-02-24 00:20:59,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-24 00:20:59,782 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:59,782 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:59,782 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 00:20:59,782 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:59,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:59,783 INFO L82 PathProgramCache]: Analyzing trace with hash 33295785, now seen corresponding path program 3 times [2021-02-24 00:20:59,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:59,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548284907] [2021-02-24 00:20:59,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:59,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:59,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:59,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:59,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:59,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:59,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:59,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:59,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:20:59,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:59,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:20:59,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:59,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-24 00:20:59,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:59,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:20:59,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:59,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:20:59,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:59,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:20:59,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:59,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:20:59,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:59,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:20:59,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:59,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 00:20:59,982 WARN L141 QuantifierPusher]: treesize reduction 18, result has 60.0 percent of original size [2021-02-24 00:20:59,984 WARN L147 QuantifierPusher]: treesize reduction 18, result has 60.0 percent of original size 27 [2021-02-24 00:21:00,005 WARN L141 QuantifierPusher]: treesize reduction 18, result has 58.1 percent of original size [2021-02-24 00:21:00,007 WARN L147 QuantifierPusher]: treesize reduction 18, result has 58.1 percent of original size 25 [2021-02-24 00:21:00,030 WARN L141 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size [2021-02-24 00:21:00,031 WARN L147 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size 17 [2021-02-24 00:21:00,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:00,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:21:00,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:00,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:21:00,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:00,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:00,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:21:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:21:00,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:00,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:00,136 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-24 00:21:00,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548284907] [2021-02-24 00:21:00,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:21:00,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-02-24 00:21:00,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498448635] [2021-02-24 00:21:00,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-24 00:21:00,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:21:00,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-24 00:21:00,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-02-24 00:21:00,139 INFO L87 Difference]: Start difference. First operand 69 states and 74 transitions. Second operand 18 states. [2021-02-24 00:21:01,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:21:01,352 INFO L93 Difference]: Finished difference Result 90 states and 96 transitions. [2021-02-24 00:21:01,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-24 00:21:01,353 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 48 [2021-02-24 00:21:01,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:21:01,354 INFO L225 Difference]: With dead ends: 90 [2021-02-24 00:21:01,354 INFO L226 Difference]: Without dead ends: 85 [2021-02-24 00:21:01,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=197, Invalid=1135, Unknown=0, NotChecked=0, Total=1332 [2021-02-24 00:21:01,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-02-24 00:21:01,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 62. [2021-02-24 00:21:01,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-02-24 00:21:01,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2021-02-24 00:21:01,370 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 48 [2021-02-24 00:21:01,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:21:01,371 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2021-02-24 00:21:01,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-24 00:21:01,371 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2021-02-24 00:21:01,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-24 00:21:01,372 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:21:01,372 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:21:01,372 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-24 00:21:01,373 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:21:01,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:21:01,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1763850199, now seen corresponding path program 4 times [2021-02-24 00:21:01,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:21:01,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251078832] [2021-02-24 00:21:01,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:21:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:21:01,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:01,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:01,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:01,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:21:01,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:01,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:21:01,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:01,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:21:01,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:01,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:21:01,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:01,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-24 00:21:01,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:01,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:21:01,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:01,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:21:01,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:01,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:21:01,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:01,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:21:01,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:01,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:21:01,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:01,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 00:21:01,554 WARN L141 QuantifierPusher]: treesize reduction 18, result has 60.0 percent of original size [2021-02-24 00:21:01,557 WARN L147 QuantifierPusher]: treesize reduction 18, result has 60.0 percent of original size 27 [2021-02-24 00:21:01,582 WARN L141 QuantifierPusher]: treesize reduction 18, result has 58.1 percent of original size [2021-02-24 00:21:01,583 WARN L147 QuantifierPusher]: treesize reduction 18, result has 58.1 percent of original size 25 [2021-02-24 00:21:01,608 WARN L141 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size [2021-02-24 00:21:01,609 WARN L147 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size 17 [2021-02-24 00:21:01,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:01,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:21:01,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:01,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:21:01,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:01,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:01,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:21:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:21:01,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:01,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:01,717 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-24 00:21:01,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251078832] [2021-02-24 00:21:01,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:21:01,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-02-24 00:21:01,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337433609] [2021-02-24 00:21:01,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-24 00:21:01,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:21:01,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-24 00:21:01,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-02-24 00:21:01,719 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 18 states. [2021-02-24 00:21:03,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:21:03,068 INFO L93 Difference]: Finished difference Result 111 states and 120 transitions. [2021-02-24 00:21:03,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-24 00:21:03,069 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 48 [2021-02-24 00:21:03,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:21:03,070 INFO L225 Difference]: With dead ends: 111 [2021-02-24 00:21:03,070 INFO L226 Difference]: Without dead ends: 105 [2021-02-24 00:21:03,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=197, Invalid=1135, Unknown=0, NotChecked=0, Total=1332 [2021-02-24 00:21:03,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-02-24 00:21:03,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 69. [2021-02-24 00:21:03,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2021-02-24 00:21:03,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 74 transitions. [2021-02-24 00:21:03,095 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 74 transitions. Word has length 48 [2021-02-24 00:21:03,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:21:03,095 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 74 transitions. [2021-02-24 00:21:03,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-24 00:21:03,095 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 74 transitions. [2021-02-24 00:21:03,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-24 00:21:03,096 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:21:03,097 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:21:03,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-24 00:21:03,097 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:21:03,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:21:03,098 INFO L82 PathProgramCache]: Analyzing trace with hash 2114796969, now seen corresponding path program 5 times [2021-02-24 00:21:03,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:21:03,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174702040] [2021-02-24 00:21:03,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:21:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:21:03,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:03,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:03,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:03,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:21:03,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:03,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:21:03,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:03,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:21:03,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:03,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:21:03,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:03,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-24 00:21:03,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:03,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:21:03,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:03,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:21:03,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:03,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:21:03,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:03,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:21:03,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:03,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:21:03,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:03,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 00:21:03,258 WARN L141 QuantifierPusher]: treesize reduction 18, result has 60.0 percent of original size [2021-02-24 00:21:03,259 WARN L147 QuantifierPusher]: treesize reduction 18, result has 60.0 percent of original size 27 [2021-02-24 00:21:03,279 WARN L141 QuantifierPusher]: treesize reduction 18, result has 58.1 percent of original size [2021-02-24 00:21:03,280 WARN L147 QuantifierPusher]: treesize reduction 18, result has 58.1 percent of original size 25 [2021-02-24 00:21:03,302 WARN L141 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size [2021-02-24 00:21:03,303 WARN L147 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size 17 [2021-02-24 00:21:03,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:03,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:21:03,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:03,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:21:03,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:03,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:03,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:21:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:21:03,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:03,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:03,413 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-24 00:21:03,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174702040] [2021-02-24 00:21:03,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:21:03,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-02-24 00:21:03,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866961726] [2021-02-24 00:21:03,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-24 00:21:03,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:21:03,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-24 00:21:03,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-02-24 00:21:03,416 INFO L87 Difference]: Start difference. First operand 69 states and 74 transitions. Second operand 18 states. [2021-02-24 00:21:04,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:21:04,444 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2021-02-24 00:21:04,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-24 00:21:04,444 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 48 [2021-02-24 00:21:04,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:21:04,445 INFO L225 Difference]: With dead ends: 99 [2021-02-24 00:21:04,446 INFO L226 Difference]: Without dead ends: 94 [2021-02-24 00:21:04,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2021-02-24 00:21:04,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-02-24 00:21:04,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 83. [2021-02-24 00:21:04,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2021-02-24 00:21:04,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2021-02-24 00:21:04,471 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 48 [2021-02-24 00:21:04,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:21:04,472 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2021-02-24 00:21:04,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-24 00:21:04,472 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2021-02-24 00:21:04,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-24 00:21:04,472 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:21:04,473 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:21:04,473 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-24 00:21:04,473 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:21:04,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:21:04,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1016933271, now seen corresponding path program 6 times [2021-02-24 00:21:04,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:21:04,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528638235] [2021-02-24 00:21:04,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:21:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:21:04,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:04,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:04,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:04,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:21:04,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:04,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:21:04,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:04,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:21:04,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:04,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:21:04,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:04,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-24 00:21:04,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:04,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:21:04,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:04,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:21:04,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:04,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:21:04,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:04,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:21:04,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:04,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:21:04,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:04,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 00:21:04,637 WARN L141 QuantifierPusher]: treesize reduction 18, result has 60.0 percent of original size [2021-02-24 00:21:04,639 WARN L147 QuantifierPusher]: treesize reduction 18, result has 60.0 percent of original size 27 [2021-02-24 00:21:04,662 WARN L141 QuantifierPusher]: treesize reduction 18, result has 58.1 percent of original size [2021-02-24 00:21:04,663 WARN L147 QuantifierPusher]: treesize reduction 18, result has 58.1 percent of original size 25 [2021-02-24 00:21:04,690 WARN L141 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size [2021-02-24 00:21:04,693 WARN L147 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size 17 [2021-02-24 00:21:04,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:04,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:21:04,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:04,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:21:04,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:04,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:04,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:21:04,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:21:04,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:04,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:04,808 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-24 00:21:04,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528638235] [2021-02-24 00:21:04,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:21:04,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-02-24 00:21:04,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360951164] [2021-02-24 00:21:04,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-24 00:21:04,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:21:04,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-24 00:21:04,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-02-24 00:21:04,815 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand 18 states. [2021-02-24 00:21:06,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:21:06,073 INFO L93 Difference]: Finished difference Result 112 states and 121 transitions. [2021-02-24 00:21:06,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-24 00:21:06,074 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 48 [2021-02-24 00:21:06,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:21:06,075 INFO L225 Difference]: With dead ends: 112 [2021-02-24 00:21:06,075 INFO L226 Difference]: Without dead ends: 107 [2021-02-24 00:21:06,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=186, Invalid=1074, Unknown=0, NotChecked=0, Total=1260 [2021-02-24 00:21:06,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-02-24 00:21:06,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 72. [2021-02-24 00:21:06,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-02-24 00:21:06,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2021-02-24 00:21:06,096 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 48 [2021-02-24 00:21:06,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:21:06,096 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2021-02-24 00:21:06,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-24 00:21:06,096 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2021-02-24 00:21:06,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-02-24 00:21:06,097 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:21:06,097 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:21:06,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-24 00:21:06,097 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:21:06,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:21:06,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1947650397, now seen corresponding path program 7 times [2021-02-24 00:21:06,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:21:06,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095120395] [2021-02-24 00:21:06,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:21:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:21:06,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:06,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:06,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:06,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:21:06,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:06,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:21:06,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:06,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:21:06,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:06,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:21:06,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:06,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-24 00:21:06,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:06,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:21:06,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:06,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:21:06,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:06,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:21:06,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:06,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:21:06,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:06,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:21:06,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:06,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:21:06,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:06,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:21:06,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:06,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:21:06,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:06,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 00:21:06,274 WARN L141 QuantifierPusher]: treesize reduction 18, result has 60.0 percent of original size [2021-02-24 00:21:06,275 WARN L147 QuantifierPusher]: treesize reduction 18, result has 60.0 percent of original size 27 [2021-02-24 00:21:06,298 WARN L141 QuantifierPusher]: treesize reduction 18, result has 58.1 percent of original size [2021-02-24 00:21:06,298 WARN L147 QuantifierPusher]: treesize reduction 18, result has 58.1 percent of original size 25 [2021-02-24 00:21:06,322 WARN L141 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size [2021-02-24 00:21:06,323 WARN L147 QuantifierPusher]: treesize reduction 19, result has 47.2 percent of original size 17 [2021-02-24 00:21:06,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:06,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:21:06,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:06,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:21:06,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:06,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:06,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:21:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:21:06,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:06,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:06,425 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-02-24 00:21:06,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095120395] [2021-02-24 00:21:06,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:21:06,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-02-24 00:21:06,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021893071] [2021-02-24 00:21:06,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-24 00:21:06,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:21:06,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-24 00:21:06,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-02-24 00:21:06,428 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand 19 states. [2021-02-24 00:21:07,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:21:07,534 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2021-02-24 00:21:07,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-24 00:21:07,535 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2021-02-24 00:21:07,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:21:07,535 INFO L225 Difference]: With dead ends: 72 [2021-02-24 00:21:07,535 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 00:21:07,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=169, Invalid=1021, Unknown=0, NotChecked=0, Total=1190 [2021-02-24 00:21:07,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 00:21:07,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 00:21:07,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 00:21:07,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 00:21:07,538 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2021-02-24 00:21:07,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:21:07,538 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 00:21:07,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-24 00:21:07,539 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 00:21:07,539 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 00:21:07,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-24 00:21:07,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 00:21:07,850 WARN L202 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 74 [2021-02-24 00:21:08,073 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 52 [2021-02-24 00:21:08,621 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 52 [2021-02-24 00:21:09,276 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-24 00:21:09,277 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-24 00:21:09,277 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-24 00:21:09,277 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-24 00:21:09,277 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-24 00:21:09,277 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:21:09,277 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 00:21:09,277 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-24 00:21:09,277 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-24 00:21:09,278 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-24 00:21:09,278 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-24 00:21:09,278 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-02-24 00:21:09,278 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-24 00:21:09,278 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:21:09,278 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:21:09,278 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:21:09,278 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 00:21:09,278 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 00:21:09,279 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-24 00:21:09,279 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-02-24 00:21:09,279 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-24 00:21:09,279 INFO L189 CegarLoopUtils]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2021-02-24 00:21:09,279 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-24 00:21:09,279 INFO L185 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: (let ((.cse1 (+ main_~a~0 main_~b~0)) (.cse0 (* 3 main_~i~0))) (and (<= (+ main_~a~0 main_~b~0 3) (* 3 main_~n~0)) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2021-02-24 00:21:09,279 INFO L185 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: (let ((.cse0 (+ main_~a~0 main_~b~0)) (.cse1 (+ (* 3 main_~i~0) 1))) (and (< .cse0 (+ (* 3 main_~n~0) 1)) (<= .cse1 .cse0) (<= .cse0 .cse1))) [2021-02-24 00:21:09,280 INFO L185 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (let ((.cse1 (+ main_~a~0 main_~b~0)) (.cse0 (* 3 main_~i~0))) (and (<= (+ main_~a~0 main_~b~0 3) (* 3 main_~n~0)) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2021-02-24 00:21:09,280 INFO L185 CegarLoopUtils]: At program point L29-1(lines 29 35) the Hoare annotation is: (let ((.cse1 (+ main_~a~0 main_~b~0)) (.cse0 (* 3 main_~i~0))) (and (<= (+ main_~a~0 main_~b~0 3) (* 3 main_~n~0)) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2021-02-24 00:21:09,280 INFO L185 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (and (= main_~i~0 0) (= main_~a~0 0) (= main_~b~0 0)) [2021-02-24 00:21:09,280 INFO L185 CegarLoopUtils]: At program point L29-2(line 29) the Hoare annotation is: (let ((.cse1 (+ main_~a~0 main_~b~0)) (.cse0 (* 3 main_~i~0))) (and (<= (+ main_~a~0 main_~b~0 3) (* 3 main_~n~0)) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2021-02-24 00:21:09,280 INFO L185 CegarLoopUtils]: At program point L27-1(line 27) the Hoare annotation is: (and (= main_~i~0 0) (= main_~a~0 0) (= main_~b~0 0)) [2021-02-24 00:21:09,280 INFO L192 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: true [2021-02-24 00:21:09,280 INFO L185 CegarLoopUtils]: At program point L29-4(line 29) the Hoare annotation is: (let ((.cse1 (+ main_~a~0 main_~b~0)) (.cse0 (* 3 main_~i~0))) (and (<= (+ main_~a~0 main_~b~0 3) (* 3 main_~n~0)) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2021-02-24 00:21:09,281 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 24 40) the Hoare annotation is: true [2021-02-24 00:21:09,281 INFO L192 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: true [2021-02-24 00:21:09,281 INFO L185 CegarLoopUtils]: At program point L29-5(lines 29 35) the Hoare annotation is: (let ((.cse0 (+ (* 3 main_~i~0) 3)) (.cse1 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (< .cse1 (+ (* 3 main_~n~0) 1)))) [2021-02-24 00:21:09,281 INFO L192 CegarLoopUtils]: At program point L25-2(line 25) the Hoare annotation is: true [2021-02-24 00:21:09,281 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 24 40) the Hoare annotation is: true [2021-02-24 00:21:09,281 INFO L192 CegarLoopUtils]: At program point L38(line 38) the Hoare annotation is: true [2021-02-24 00:21:09,282 INFO L185 CegarLoopUtils]: At program point L34(line 34) the Hoare annotation is: (let ((.cse1 (+ (* 3 main_~i~0) 2)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= (+ main_~a~0 main_~b~0 1) (* 3 main_~n~0)))) [2021-02-24 00:21:09,282 INFO L185 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: (let ((.cse1 (+ main_~a~0 main_~b~0)) (.cse0 (* 3 main_~i~0))) (and (<= (+ main_~a~0 main_~b~0 3) (* 3 main_~n~0)) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2021-02-24 00:21:09,282 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 40) the Hoare annotation is: true [2021-02-24 00:21:09,282 INFO L192 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-02-24 00:21:09,282 INFO L185 CegarLoopUtils]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse0 (+ main_~a~0 main_~b~0)) (.cse1 (* 3 main_~i~0))) (and (< .cse0 (+ (* 3 main_~n~0) 1)) (<= .cse1 .cse0) (<= .cse0 .cse1))) [2021-02-24 00:21:09,282 INFO L185 CegarLoopUtils]: At program point L26-1(line 26) the Hoare annotation is: (= main_~i~0 0) [2021-02-24 00:21:09,282 INFO L185 CegarLoopUtils]: At program point L28-3(lines 28 37) the Hoare annotation is: (let ((.cse1 (* 3 main_~n~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (< .cse0 (+ .cse1 1)) (<= .cse1 .cse0))) [2021-02-24 00:21:09,283 INFO L185 CegarLoopUtils]: At program point L26-2(line 26) the Hoare annotation is: (and (= main_~i~0 0) (= main_~a~0 0)) [2021-02-24 00:21:09,283 INFO L185 CegarLoopUtils]: At program point L26-3(line 26) the Hoare annotation is: (and (= main_~i~0 0) (= main_~a~0 0) (= main_~b~0 0)) [2021-02-24 00:21:09,283 INFO L185 CegarLoopUtils]: At program point L26-4(line 26) the Hoare annotation is: (and (= main_~i~0 0) (= main_~a~0 0) (= main_~b~0 0)) [2021-02-24 00:21:09,283 INFO L185 CegarLoopUtils]: At program point L26-5(line 26) the Hoare annotation is: (and (= main_~i~0 0) (= main_~a~0 0) (= main_~b~0 0)) [2021-02-24 00:21:09,283 INFO L185 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 00:21:09,283 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-24 00:21:09,283 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 00:21:09,284 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:21:09,284 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:21:09,284 INFO L185 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 00:21:09,284 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:21:09,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:21:09 BoogieIcfgContainer [2021-02-24 00:21:09,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:21:09,306 INFO L168 Benchmark]: Toolchain (without parser) took 21171.99 ms. Allocated memory was 157.3 MB in the beginning and 327.2 MB in the end (delta: 169.9 MB). Free memory was 132.5 MB in the beginning and 184.2 MB in the end (delta: -51.7 MB). Peak memory consumption was 190.3 MB. Max. memory is 8.0 GB. [2021-02-24 00:21:09,306 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 157.3 MB. Free memory is still 131.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:21:09,306 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.46 ms. Allocated memory is still 157.3 MB. Free memory was 131.4 MB in the beginning and 121.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:21:09,306 INFO L168 Benchmark]: Boogie Preprocessor took 68.59 ms. Allocated memory is still 157.3 MB. Free memory was 121.8 MB in the beginning and 120.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:21:09,306 INFO L168 Benchmark]: RCFGBuilder took 464.97 ms. Allocated memory is still 157.3 MB. Free memory was 120.2 MB in the beginning and 104.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-24 00:21:09,307 INFO L168 Benchmark]: TraceAbstraction took 20225.70 ms. Allocated memory was 157.3 MB in the beginning and 327.2 MB in the end (delta: 169.9 MB). Free memory was 103.4 MB in the beginning and 184.2 MB in the end (delta: -80.8 MB). Peak memory consumption was 160.9 MB. Max. memory is 8.0 GB. [2021-02-24 00:21:09,307 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 157.3 MB. Free memory is still 131.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 387.46 ms. Allocated memory is still 157.3 MB. Free memory was 131.4 MB in the beginning and 121.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 68.59 ms. Allocated memory is still 157.3 MB. Free memory was 121.8 MB in the beginning and 120.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 464.97 ms. Allocated memory is still 157.3 MB. Free memory was 120.2 MB in the beginning and 104.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 20225.70 ms. Allocated memory was 157.3 MB in the beginning and 327.2 MB in the end (delta: 169.9 MB). Free memory was 103.4 MB in the beginning and 184.2 MB in the end (delta: -80.8 MB). Peak memory consumption was 160.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (a + b < 3 * n + 1 && 3 * i <= a + b) && a + b <= 3 * i - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18.3s, OverallIterations: 13, TraceHistogramMax: 4, AutomataDifference: 13.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 400 SDtfs, 1192 SDslu, 1284 SDs, 0 SdLazy, 3316 SolverSat, 332 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 433 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 385 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2703 ImplicationChecksByTransitivity, 11.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred 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, 13 MinimizatonAttempts, 199 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 46 LocationsWithAnnotation, 144 PreInvPairs, 220 NumberOfFragments, 401 HoareAnnotationTreeSize, 144 FomulaSimplifications, 7592337 FormulaSimplificationTreeSizeReduction, 1.0s HoareSimplificationTime, 46 FomulaSimplificationsInter, 2314 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 554 NumberOfCodeBlocks, 554 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 541 ConstructedInterpolants, 0 QuantifiedInterpolants, 212404 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 11/165 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...