/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:12:57,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:12:57,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:12:57,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 18:12:57,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:12:57,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:12:57,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:12:57,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:12:57,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:12:57,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:12:57,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:12:57,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:12:57,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:12:57,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:12:57,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:12:57,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:12:57,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 18:12:57,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:12:57,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:12:57,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:12:57,225 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:12:57,248 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:12:57,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:12:57,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:12:57,252 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:12:57,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:12:57,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:12:57,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:12:57,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:12:57,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:12:57,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:12:57,255 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:12:57,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:12:57,255 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:12:57,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:12:57,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:12:57,256 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:12:57,256 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:12:57,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:12:57,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:12:57,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:12:57,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:12:57,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:12:57,258 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:12:57,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:12:57,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:12:57,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:12:57,712 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:12:57,713 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:12:57,714 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label46.c [2021-02-23 18:12:57,800 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2baade9a3/f43782241cfc4f538bf3aca1250aa5e9/FLAG262816a38 [2021-02-23 18:12:58,611 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:12:58,612 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label46.c [2021-02-23 18:12:58,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2baade9a3/f43782241cfc4f538bf3aca1250aa5e9/FLAG262816a38 [2021-02-23 18:12:58,860 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2baade9a3/f43782241cfc4f538bf3aca1250aa5e9 [2021-02-23 18:12:58,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:12:58,881 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:12:58,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:12:58,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:12:58,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:12:58,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:12:58" (1/1) ... [2021-02-23 18:12:58,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cce2542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:12:58, skipping insertion in model container [2021-02-23 18:12:58,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:12:58" (1/1) ... [2021-02-23 18:12:58,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:12:58,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:12:59,405 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label46.c[19475,19488] [2021-02-23 18:12:59,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:12:59,451 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:12:59,663 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label46.c[19475,19488] [2021-02-23 18:12:59,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:12:59,708 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:12:59,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:12:59 WrapperNode [2021-02-23 18:12:59,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:12:59,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:12:59,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:12:59,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:12:59,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:12:59" (1/1) ... [2021-02-23 18:12:59,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:12:59" (1/1) ... [2021-02-23 18:12:59,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:12:59" (1/1) ... [2021-02-23 18:12:59,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:12:59" (1/1) ... [2021-02-23 18:12:59,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:12:59" (1/1) ... [2021-02-23 18:12:59,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:12:59" (1/1) ... [2021-02-23 18:12:59,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:12:59" (1/1) ... [2021-02-23 18:12:59,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:12:59,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:12:59,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:12:59,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:12:59,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:12:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:13:00,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:13:00,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:13:00,004 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:13:00,004 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2021-02-23 18:13:00,004 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:13:00,005 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2021-02-23 18:13:00,005 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:13:00,005 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:13:00,005 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:13:00,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:13:00,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:13:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 18:13:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:13:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:13:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:13:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:13:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:13:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:13:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:13:01,597 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:13:01,597 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-23 18:13:01,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:13:01 BoogieIcfgContainer [2021-02-23 18:13:01,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:13:01,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:13:01,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:13:01,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:13:01,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:12:58" (1/3) ... [2021-02-23 18:13:01,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6985e544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:13:01, skipping insertion in model container [2021-02-23 18:13:01,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:12:59" (2/3) ... [2021-02-23 18:13:01,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6985e544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:13:01, skipping insertion in model container [2021-02-23 18:13:01,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:13:01" (3/3) ... [2021-02-23 18:13:01,625 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label46.c [2021-02-23 18:13:01,632 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:13:01,639 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:13:01,660 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:13:01,693 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:13:01,693 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:13:01,693 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:13:01,694 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:13:01,694 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:13:01,694 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:13:01,694 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:13:01,695 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:13:01,725 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states. [2021-02-23 18:13:01,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 18:13:01,753 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:13:01,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:13:01,755 INFO L428 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:13:01,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:13:01,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1790404674, now seen corresponding path program 1 times [2021-02-23 18:13:01,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:13:01,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199679284] [2021-02-23 18:13:01,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:13:01,854 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:13:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:13:02,315 WARN L141 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size [2021-02-23 18:13:02,317 WARN L147 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size 4 [2021-02-23 18:13:02,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:02,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:13:02,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:02,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:13:02,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:02,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:13:02,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:13:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:13:02,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:02,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:13:02,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:02,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:13:02,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:13:02,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199679284] [2021-02-23 18:13:02,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:13:02,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 18:13:02,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118789312] [2021-02-23 18:13:02,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 18:13:02,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:13:02,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 18:13:02,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:13:02,599 INFO L87 Difference]: Start difference. First operand 534 states. Second operand 5 states. [2021-02-23 18:13:05,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:13:05,443 INFO L93 Difference]: Finished difference Result 1279 states and 1678 transitions. [2021-02-23 18:13:05,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 18:13:05,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2021-02-23 18:13:05,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:13:05,467 INFO L225 Difference]: With dead ends: 1279 [2021-02-23 18:13:05,468 INFO L226 Difference]: Without dead ends: 704 [2021-02-23 18:13:05,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:13:05,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-02-23 18:13:05,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 611. [2021-02-23 18:13:05,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2021-02-23 18:13:05,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 739 transitions. [2021-02-23 18:13:05,698 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 739 transitions. Word has length 148 [2021-02-23 18:13:05,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:13:05,700 INFO L480 AbstractCegarLoop]: Abstraction has 611 states and 739 transitions. [2021-02-23 18:13:05,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 18:13:05,700 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 739 transitions. [2021-02-23 18:13:05,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-02-23 18:13:05,708 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:13:05,709 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:13:05,709 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:13:05,709 INFO L428 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:13:05,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:13:05,710 INFO L82 PathProgramCache]: Analyzing trace with hash 161783830, now seen corresponding path program 1 times [2021-02-23 18:13:05,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:13:05,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716719306] [2021-02-23 18:13:05,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:13:05,978 WARN L141 QuantifierPusher]: treesize reduction 12, result has 94.0 percent of original size [2021-02-23 18:13:06,006 WARN L147 QuantifierPusher]: treesize reduction 12, result has 94.0 percent of original size 187 [2021-02-23 18:13:06,111 WARN L141 QuantifierPusher]: treesize reduction 12, result has 94.0 percent of original size [2021-02-23 18:13:06,117 WARN L147 QuantifierPusher]: treesize reduction 12, result has 94.0 percent of original size 187 [2021-02-23 18:13:06,218 WARN L141 QuantifierPusher]: treesize reduction 12, result has 94.0 percent of original size [2021-02-23 18:13:06,223 WARN L147 QuantifierPusher]: treesize reduction 12, result has 94.0 percent of original size 187 [2021-02-23 18:13:06,325 WARN L141 QuantifierPusher]: treesize reduction 12, result has 94.0 percent of original size [2021-02-23 18:13:06,331 WARN L147 QuantifierPusher]: treesize reduction 12, result has 94.0 percent of original size 187 [2021-02-23 18:13:06,479 WARN L141 QuantifierPusher]: treesize reduction 12, result has 94.0 percent of original size [2021-02-23 18:13:06,488 WARN L147 QuantifierPusher]: treesize reduction 12, result has 94.0 percent of original size 187 [2021-02-23 18:13:06,600 WARN L141 QuantifierPusher]: treesize reduction 12, result has 94.0 percent of original size [2021-02-23 18:13:06,609 WARN L147 QuantifierPusher]: treesize reduction 12, result has 94.0 percent of original size 187 [2021-02-23 18:13:06,742 WARN L141 QuantifierPusher]: treesize reduction 12, result has 94.1 percent of original size [2021-02-23 18:13:06,751 WARN L147 QuantifierPusher]: treesize reduction 12, result has 94.1 percent of original size 192 [2021-02-23 18:13:06,856 WARN L141 QuantifierPusher]: treesize reduction 12, result has 94.0 percent of original size [2021-02-23 18:13:06,865 WARN L147 QuantifierPusher]: treesize reduction 12, result has 94.0 percent of original size 187 [2021-02-23 18:13:06,969 WARN L141 QuantifierPusher]: treesize reduction 12, result has 94.1 percent of original size [2021-02-23 18:13:06,973 WARN L147 QuantifierPusher]: treesize reduction 12, result has 94.1 percent of original size 192 [2021-02-23 18:13:07,077 WARN L141 QuantifierPusher]: treesize reduction 12, result has 94.0 percent of original size [2021-02-23 18:13:07,081 WARN L147 QuantifierPusher]: treesize reduction 12, result has 94.0 percent of original size 187 [2021-02-23 18:13:07,082 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-23 18:13:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:13:07,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:07,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 18:13:07,450 WARN L141 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size [2021-02-23 18:13:07,451 WARN L147 QuantifierPusher]: treesize reduction 2, result has 88.9 percent of original size 16 [2021-02-23 18:13:07,452 WARN L141 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-02-23 18:13:07,453 WARN L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-02-23 18:13:07,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:07,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:13:07,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:07,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:13:07,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:07,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:13:07,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:07,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:13:07,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:07,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:13:07,517 WARN L141 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-02-23 18:13:07,518 WARN L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-02-23 18:13:07,532 WARN L141 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-02-23 18:13:07,533 WARN L147 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size 7 [2021-02-23 18:13:07,541 WARN L141 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-02-23 18:13:07,542 WARN L147 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size 7 [2021-02-23 18:13:07,545 WARN L141 QuantifierPusher]: treesize reduction 39, result has 18.8 percent of original size [2021-02-23 18:13:07,546 WARN L147 QuantifierPusher]: treesize reduction 39, result has 18.8 percent of original size 9 [2021-02-23 18:13:07,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:07,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:13:07,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:07,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:13:07,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:13:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:13:07,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:07,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:13:07,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:07,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:13:07,709 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 18:13:07,710 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 18:13:07,726 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 18:13:07,727 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 18:13:07,745 WARN L141 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-02-23 18:13:07,746 WARN L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-02-23 18:13:07,747 WARN L141 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-02-23 18:13:07,748 WARN L147 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size 16 [2021-02-23 18:13:07,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:13:07,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:07,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 200 [2021-02-23 18:13:07,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:07,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:13:07,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:07,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 196 [2021-02-23 18:13:07,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 197 [2021-02-23 18:13:07,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:07,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:13:07,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:07,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 193 [2021-02-23 18:13:07,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 194 [2021-02-23 18:13:07,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:07,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:13:07,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:07,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-02-23 18:13:07,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 191 [2021-02-23 18:13:07,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:07,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:13:07,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:07,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 187 [2021-02-23 18:13:07,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-02-23 18:13:07,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:07,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:13:07,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:07,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 191 [2021-02-23 18:13:07,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-02-23 18:13:07,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:07,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:13:08,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:08,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 196 [2021-02-23 18:13:08,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 197 [2021-02-23 18:13:08,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:08,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 18:13:08,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:08,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 18:13:08,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:08,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-23 18:13:08,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:08,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-23 18:13:08,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:08,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-23 18:13:08,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:08,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-23 18:13:08,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:08,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-02-23 18:13:08,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:08,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-02-23 18:13:08,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:08,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-23 18:13:08,388 WARN L141 QuantifierPusher]: treesize reduction 16, result has 78.7 percent of original size [2021-02-23 18:13:08,391 WARN L147 QuantifierPusher]: treesize reduction 16, result has 78.7 percent of original size 59 [2021-02-23 18:13:08,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:08,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:13:08,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:13:08,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:13:08,452 WARN L141 QuantifierPusher]: treesize reduction 33, result has 2.9 percent of original size [2021-02-23 18:13:08,452 WARN L147 QuantifierPusher]: treesize reduction 33, result has 2.9 percent of original size 1 [2021-02-23 18:13:08,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716719306] [2021-02-23 18:13:08,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:13:08,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-23 18:13:08,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002523612] [2021-02-23 18:13:08,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 18:13:08,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:13:08,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 18:13:08,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2021-02-23 18:13:08,456 INFO L87 Difference]: Start difference. First operand 611 states and 739 transitions. Second operand 16 states. [2021-02-23 18:13:08,657 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-23 18:13:08,796 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-02-23 18:13:08,925 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-02-23 18:13:09,046 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-02-23 18:13:09,205 WARN L202 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-02-23 18:13:09,365 WARN L202 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-02-23 18:13:09,542 WARN L202 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-02-23 18:13:09,720 WARN L202 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-02-23 18:13:11,614 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-02-23 18:13:12,727 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-02-23 18:13:14,574 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 18:13:17,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:13:17,591 INFO L93 Difference]: Finished difference Result 2696 states and 3610 transitions. [2021-02-23 18:13:17,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-02-23 18:13:17,592 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 170 [2021-02-23 18:13:17,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:13:17,616 INFO L225 Difference]: With dead ends: 2696 [2021-02-23 18:13:17,616 INFO L226 Difference]: Without dead ends: 2117 [2021-02-23 18:13:17,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=492, Invalid=990, Unknown=0, NotChecked=0, Total=1482 [2021-02-23 18:13:17,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2117 states. [2021-02-23 18:13:18,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2117 to 1812. [2021-02-23 18:13:18,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1812 states. [2021-02-23 18:13:18,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 2272 transitions. [2021-02-23 18:13:18,062 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 2272 transitions. Word has length 170 [2021-02-23 18:13:18,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:13:18,062 INFO L480 AbstractCegarLoop]: Abstraction has 1812 states and 2272 transitions. [2021-02-23 18:13:18,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 18:13:18,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 2272 transitions. [2021-02-23 18:13:18,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-02-23 18:13:18,072 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:13:18,073 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:13:18,073 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:13:18,073 INFO L428 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:13:18,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:13:18,074 INFO L82 PathProgramCache]: Analyzing trace with hash -944886406, now seen corresponding path program 1 times [2021-02-23 18:13:18,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:13:18,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845210465] [2021-02-23 18:13:18,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:13:18,118 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 11