/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/Problem02_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:17:25,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:17:25,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:17:25,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 18:17:25,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:17:25,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:17:25,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:17:25,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:17:25,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:17:25,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:17:25,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:17:25,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:17:25,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:17:25,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:17:25,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:17:25,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:17:25,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 18:17:25,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:17:25,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:17:25,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:17:25,612 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 18:17:25,637 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:17:25,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:17:25,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:17:25,642 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:17:25,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:17:25,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:17:25,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:17:25,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:17:25,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:17:25,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:17:25,644 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:17:25,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:17:25,645 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:17:25,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:17:25,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:17:25,645 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:17:25,646 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:17:25,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:17:25,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:17:25,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:17:25,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:17:25,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:17:25,660 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:17:26,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:17:26,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:17:26,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:17:26,109 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:17:26,109 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:17:26,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label05.c [2021-02-23 18:17:26,203 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/265d4a39b/0032e452202143729cf35e306ea0b8f1/FLAG1df4c9fa8 [2021-02-23 18:17:26,939 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:17:26,940 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label05.c [2021-02-23 18:17:26,964 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/265d4a39b/0032e452202143729cf35e306ea0b8f1/FLAG1df4c9fa8 [2021-02-23 18:17:27,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/265d4a39b/0032e452202143729cf35e306ea0b8f1 [2021-02-23 18:17:27,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:17:27,248 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:17:27,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:17:27,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:17:27,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:17:27,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:17:27" (1/1) ... [2021-02-23 18:17:27,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@704cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:17:27, skipping insertion in model container [2021-02-23 18:17:27,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:17:27" (1/1) ... [2021-02-23 18:17:27,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:17:27,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:17:27,895 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/Problem02_label05.c[19738,19751] [2021-02-23 18:17:27,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:17:27,941 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:17:28,017 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/Problem02_label05.c[19738,19751] [2021-02-23 18:17:28,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:17:28,063 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:17:28,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:17:28 WrapperNode [2021-02-23 18:17:28,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:17:28,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:17:28,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:17:28,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:17:28,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:17:28" (1/1) ... [2021-02-23 18:17:28,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:17:28" (1/1) ... [2021-02-23 18:17:28,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:17:28" (1/1) ... [2021-02-23 18:17:28,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:17:28" (1/1) ... [2021-02-23 18:17:28,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:17:28" (1/1) ... [2021-02-23 18:17:28,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:17:28" (1/1) ... [2021-02-23 18:17:28,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:17:28" (1/1) ... [2021-02-23 18:17:28,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:17:28,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:17:28,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:17:28,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:17:28,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:17:28" (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 18:17:28,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:17:28,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:17:28,388 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:17:28,389 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2021-02-23 18:17:28,389 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:17:28,390 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2021-02-23 18:17:28,390 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:17:28,390 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:17:28,390 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:17:28,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:17:28,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:17:28,392 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 18:17:28,392 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:17:28,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:17:28,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:17:28,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:17:28,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:17:28,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:17:28,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:17:29,904 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:17:29,904 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-23 18:17:29,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:17:29 BoogieIcfgContainer [2021-02-23 18:17:29,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:17:29,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:17:29,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:17:29,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:17:29,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:17:27" (1/3) ... [2021-02-23 18:17:29,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e06e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:17:29, skipping insertion in model container [2021-02-23 18:17:29,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:17:28" (2/3) ... [2021-02-23 18:17:29,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e06e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:17:29, skipping insertion in model container [2021-02-23 18:17:29,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:17:29" (3/3) ... [2021-02-23 18:17:29,917 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label05.c [2021-02-23 18:17:29,925 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:17:29,931 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:17:29,951 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:17:29,977 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:17:29,978 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:17:29,978 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:17:29,978 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:17:29,979 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:17:29,979 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:17:29,979 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:17:29,979 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:17:30,007 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states. [2021-02-23 18:17:30,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-02-23 18:17:30,035 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:17:30,036 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:17:30,037 INFO L428 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:17:30,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:17:30,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1574928697, now seen corresponding path program 1 times [2021-02-23 18:17:30,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:17:30,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736678] [2021-02-23 18:17:30,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:17:30,139 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:17:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:17:30,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:30,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:17:30,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:30,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:17:30,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:30,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:17:30,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:30,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:17:30,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:17:30,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:17:30,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:30,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:17:30,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:30,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:17:30,918 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 18:17:30,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736678] [2021-02-23 18:17:30,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:17:30,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 18:17:30,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080718714] [2021-02-23 18:17:30,929 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 18:17:30,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:17:30,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 18:17:30,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 18:17:30,947 INFO L87 Difference]: Start difference. First operand 536 states. Second operand 4 states. [2021-02-23 18:17:33,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:17:33,988 INFO L93 Difference]: Finished difference Result 1405 states and 1859 transitions. [2021-02-23 18:17:33,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 18:17:33,990 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2021-02-23 18:17:33,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:17:34,012 INFO L225 Difference]: With dead ends: 1405 [2021-02-23 18:17:34,012 INFO L226 Difference]: Without dead ends: 796 [2021-02-23 18:17:34,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:17:34,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2021-02-23 18:17:34,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 673. [2021-02-23 18:17:34,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2021-02-23 18:17:34,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 821 transitions. [2021-02-23 18:17:34,272 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 821 transitions. Word has length 160 [2021-02-23 18:17:34,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:17:34,273 INFO L480 AbstractCegarLoop]: Abstraction has 673 states and 821 transitions. [2021-02-23 18:17:34,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 18:17:34,274 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 821 transitions. [2021-02-23 18:17:34,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-02-23 18:17:34,280 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:17:34,281 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:17:34,281 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:17:34,281 INFO L428 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:17:34,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:17:34,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1175063544, now seen corresponding path program 1 times [2021-02-23 18:17:34,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:17:34,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989195387] [2021-02-23 18:17:34,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:17:34,486 WARN L141 QuantifierPusher]: treesize reduction 184, result has 50.1 percent of original size [2021-02-23 18:17:34,514 WARN L147 QuantifierPusher]: treesize reduction 184, result has 50.1 percent of original size 185 [2021-02-23 18:17:34,630 WARN L141 QuantifierPusher]: treesize reduction 184, result has 50.1 percent of original size [2021-02-23 18:17:34,635 WARN L147 QuantifierPusher]: treesize reduction 184, result has 50.1 percent of original size 185 [2021-02-23 18:17:34,742 WARN L141 QuantifierPusher]: treesize reduction 179, result has 50.1 percent of original size [2021-02-23 18:17:34,747 WARN L147 QuantifierPusher]: treesize reduction 179, result has 50.1 percent of original size 180 [2021-02-23 18:17:34,851 WARN L141 QuantifierPusher]: treesize reduction 179, result has 50.1 percent of original size [2021-02-23 18:17:34,857 WARN L147 QuantifierPusher]: treesize reduction 179, result has 50.1 percent of original size 180 [2021-02-23 18:17:34,963 WARN L141 QuantifierPusher]: treesize reduction 179, result has 50.1 percent of original size [2021-02-23 18:17:34,969 WARN L147 QuantifierPusher]: treesize reduction 179, result has 50.1 percent of original size 180 [2021-02-23 18:17:35,103 WARN L141 QuantifierPusher]: treesize reduction 179, result has 50.1 percent of original size [2021-02-23 18:17:35,108 WARN L147 QuantifierPusher]: treesize reduction 179, result has 50.1 percent of original size 180 [2021-02-23 18:17:35,109 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-23 18:17:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:17:35,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:35,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:17:35,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:35,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:17:35,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:35,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:17:35,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:35,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:17:35,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:35,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:17:35,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:35,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:17:35,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:35,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:17:35,551 WARN L141 QuantifierPusher]: treesize reduction 33, result has 21.4 percent of original size [2021-02-23 18:17:35,552 WARN L147 QuantifierPusher]: treesize reduction 33, result has 21.4 percent of original size 9 [2021-02-23 18:17:35,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:35,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:17:35,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:35,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:17:35,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:17:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:17:35,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:35,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:17:35,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:35,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:17:35,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:35,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:17:35,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:35,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:17:35,861 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 18:17:35,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:35,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-02-23 18:17:35,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:35,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:17:35,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:35,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 188 [2021-02-23 18:17:35,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-02-23 18:17:35,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:35,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:17:35,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:35,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-02-23 18:17:35,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-02-23 18:17:35,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:35,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:17:35,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:35,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-02-23 18:17:35,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-02-23 18:17:35,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:35,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:17:35,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:35,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:17:35,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:35,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:17:35,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:35,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 18:17:36,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:36,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 18:17:36,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:36,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-23 18:17:36,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:36,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-02-23 18:17:36,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:36,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-23 18:17:36,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:36,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-23 18:17:36,197 WARN L141 QuantifierPusher]: treesize reduction 60, result has 1.6 percent of original size [2021-02-23 18:17:36,198 WARN L147 QuantifierPusher]: treesize reduction 60, result has 1.6 percent of original size 1 [2021-02-23 18:17:36,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:36,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:17:36,201 WARN L141 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size [2021-02-23 18:17:36,201 WARN L147 QuantifierPusher]: treesize reduction 27, result has 3.6 percent of original size 1 [2021-02-23 18:17:36,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989195387] [2021-02-23 18:17:36,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:17:36,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-23 18:17:36,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867324029] [2021-02-23 18:17:36,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 18:17:36,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:17:36,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 18:17:36,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=172, Unknown=0, NotChecked=0, Total=272 [2021-02-23 18:17:36,205 INFO L87 Difference]: Start difference. First operand 673 states and 821 transitions. Second operand 13 states. [2021-02-23 18:17:36,501 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-02-23 18:17:36,628 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-02-23 18:17:36,750 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-02-23 18:17:36,870 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-02-23 18:17:43,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:17:43,718 INFO L93 Difference]: Finished difference Result 2106 states and 2702 transitions. [2021-02-23 18:17:43,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-02-23 18:17:43,720 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 178 [2021-02-23 18:17:43,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:17:43,744 INFO L225 Difference]: With dead ends: 2106 [2021-02-23 18:17:43,746 INFO L226 Difference]: Without dead ends: 1463 [2021-02-23 18:17:43,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=267, Invalid=545, Unknown=0, NotChecked=0, Total=812 [2021-02-23 18:17:43,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2021-02-23 18:17:43,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1163. [2021-02-23 18:17:43,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1163 states. [2021-02-23 18:17:44,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1431 transitions. [2021-02-23 18:17:44,008 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1431 transitions. Word has length 178 [2021-02-23 18:17:44,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:17:44,009 INFO L480 AbstractCegarLoop]: Abstraction has 1163 states and 1431 transitions. [2021-02-23 18:17:44,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 18:17:44,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1431 transitions. [2021-02-23 18:17:44,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-02-23 18:17:44,015 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:17:44,016 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:17:44,017 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:17:44,017 INFO L428 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:17:44,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:17:44,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1351435827, now seen corresponding path program 1 times [2021-02-23 18:17:44,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:17:44,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136993033] [2021-02-23 18:17:44,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:17:44,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:44,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-02-23 18:17:44,236 WARN L141 QuantifierPusher]: treesize reduction 155, result has 53.7 percent of original size [2021-02-23 18:17:44,240 WARN L147 QuantifierPusher]: treesize reduction 155, result has 53.7 percent of original size 180 [2021-02-23 18:17:44,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:44,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-02-23 18:17:44,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:44,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-02-23 18:17:44,439 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-23 18:17:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:17:44,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:44,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:17:44,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:44,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:17:44,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:44,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:17:44,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:44,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:17:44,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:44,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:17:44,673 WARN L141 QuantifierPusher]: treesize reduction 51, result has 20.3 percent of original size [2021-02-23 18:17:44,674 WARN L147 QuantifierPusher]: treesize reduction 51, result has 20.3 percent of original size 13 [2021-02-23 18:17:44,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:44,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:17:44,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:44,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:17:44,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:17:44,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:17:44,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:44,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:17:44,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:44,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:17:44,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:44,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:17:44,974 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 18:17:44,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:44,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-02-23 18:17:44,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:44,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:17:44,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:44,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-02-23 18:17:44,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-02-23 18:17:45,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:45,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:17:45,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:45,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-02-23 18:17:45,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 185 [2021-02-23 18:17:45,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:45,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:17:45,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:45,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:17:45,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:45,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:17:45,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:45,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 18:17:45,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:45,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 18:17:45,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:45,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-23 18:17:45,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:45,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-02-23 18:17:45,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:45,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-23 18:17:45,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:45,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-23 18:17:45,271 WARN L141 QuantifierPusher]: treesize reduction 3, result has 95.5 percent of original size [2021-02-23 18:17:45,273 WARN L147 QuantifierPusher]: treesize reduction 3, result has 95.5 percent of original size 64 [2021-02-23 18:17:45,375 WARN L141 QuantifierPusher]: treesize reduction 3, result has 96.6 percent of original size [2021-02-23 18:17:45,377 WARN L147 QuantifierPusher]: treesize reduction 3, result has 96.6 percent of original size 84 [2021-02-23 18:17:45,504 WARN L141 QuantifierPusher]: treesize reduction 25, result has 76.2 percent of original size [2021-02-23 18:17:45,507 WARN L147 QuantifierPusher]: treesize reduction 25, result has 76.2 percent of original size 80 [2021-02-23 18:17:45,514 WARN L141 QuantifierPusher]: treesize reduction 3, result has 97.2 percent of original size [2021-02-23 18:17:45,516 WARN L147 QuantifierPusher]: treesize reduction 3, result has 97.2 percent of original size 103 [2021-02-23 18:17:45,665 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2021-02-23 18:17:45,670 WARN L141 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size [2021-02-23 18:17:45,672 WARN L147 QuantifierPusher]: treesize reduction 3, result has 97.6 percent of original size 120 [2021-02-23 18:17:45,857 WARN L202 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-02-23 18:17:45,865 WARN L141 QuantifierPusher]: treesize reduction 3, result has 97.9 percent of original size [2021-02-23 18:17:45,871 WARN L147 QuantifierPusher]: treesize reduction 3, result has 97.9 percent of original size 140 [2021-02-23 18:17:46,105 WARN L202 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-02-23 18:17:46,110 WARN L141 QuantifierPusher]: treesize reduction 3, result has 98.4 percent of original size [2021-02-23 18:17:46,114 WARN L147 QuantifierPusher]: treesize reduction 3, result has 98.4 percent of original size 179 [2021-02-23 18:17:46,399 WARN L202 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2021-02-23 18:17:46,404 WARN L141 QuantifierPusher]: treesize reduction 195, result has 0.5 percent of original size [2021-02-23 18:17:46,405 WARN L147 QuantifierPusher]: treesize reduction 195, result has 0.5 percent of original size 1 [2021-02-23 18:17:46,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:46,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:17:46,407 WARN L141 QuantifierPusher]: treesize reduction 31, result has 3.1 percent of original size [2021-02-23 18:17:46,408 WARN L147 QuantifierPusher]: treesize reduction 31, result has 3.1 percent of original size 1 [2021-02-23 18:17:46,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136993033] [2021-02-23 18:17:46,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:17:46,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-02-23 18:17:46,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655974364] [2021-02-23 18:17:46,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-23 18:17:46,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:17:46,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-23 18:17:46,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=299, Unknown=0, NotChecked=0, Total=462 [2021-02-23 18:17:46,411 INFO L87 Difference]: Start difference. First operand 1163 states and 1431 transitions. Second operand 18 states. [2021-02-23 18:17:46,587 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-02-23 18:17:46,721 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-02-23 18:17:46,858 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-02-23 18:17:46,983 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-02-23 18:17:47,118 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 18:17:47,251 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 18:17:47,396 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-02-23 18:17:47,577 WARN L202 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-02-23 18:17:47,781 WARN L202 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-02-23 18:17:47,988 WARN L202 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-02-23 18:17:48,236 WARN L202 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2021-02-23 18:17:48,503 WARN L202 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2021-02-23 18:17:48,789 WARN L202 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2021-02-23 18:17:54,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:17:54,788 INFO L93 Difference]: Finished difference Result 4912 states and 6366 transitions. [2021-02-23 18:17:54,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-02-23 18:17:54,789 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 186 [2021-02-23 18:17:54,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:17:54,820 INFO L225 Difference]: With dead ends: 4912 [2021-02-23 18:17:54,821 INFO L226 Difference]: Without dead ends: 3779 [2021-02-23 18:17:54,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=410, Invalid=922, Unknown=0, NotChecked=0, Total=1332 [2021-02-23 18:17:54,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3779 states. [2021-02-23 18:17:55,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3779 to 2736. [2021-02-23 18:17:55,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2736 states. [2021-02-23 18:17:55,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 3399 transitions. [2021-02-23 18:17:55,747 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 3399 transitions. Word has length 186 [2021-02-23 18:17:55,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:17:55,748 INFO L480 AbstractCegarLoop]: Abstraction has 2736 states and 3399 transitions. [2021-02-23 18:17:55,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-23 18:17:55,748 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 3399 transitions. [2021-02-23 18:17:55,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-02-23 18:17:55,761 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:17:55,762 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2021-02-23 18:17:55,762 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:17:55,762 INFO L428 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:17:55,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:17:55,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1321662378, now seen corresponding path program 1 times [2021-02-23 18:17:55,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:17:55,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904484565] [2021-02-23 18:17:55,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:17:55,854 WARN L141 QuantifierPusher]: treesize reduction -2, result has 103.3 percent of original size [2021-02-23 18:17:55,859 WARN L147 QuantifierPusher]: treesize reduction -2, result has 103.3 percent of original size 63 [2021-02-23 18:17:56,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:56,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-02-23 18:17:56,046 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:17:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:17:56,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:56,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:17:56,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:56,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:17:56,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:56,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:17:56,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:17:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:17:56,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:56,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:17:56,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-02-23 18:17:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:17:56,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:56,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:17:56,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-02-23 18:17:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:17:56,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:56,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:17:56,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:56,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:17:56,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-02-23 18:17:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:17:56,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:56,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:17:56,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:17:56,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:17:56,359 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 18:17:56,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904484565] [2021-02-23 18:17:56,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:17:56,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 18:17:56,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602697210] [2021-02-23 18:17:56,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 18:17:56,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:17:56,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 18:17:56,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-23 18:17:56,367 INFO L87 Difference]: Start difference. First operand 2736 states and 3399 transitions. Second operand 7 states. [2021-02-23 18:18:01,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:18:01,340 INFO L93 Difference]: Finished difference Result 6775 states and 8579 transitions. [2021-02-23 18:18:01,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 18:18:01,341 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2021-02-23 18:18:01,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:18:01,387 INFO L225 Difference]: With dead ends: 6775 [2021-02-23 18:18:01,388 INFO L226 Difference]: Without dead ends: 4069 [2021-02-23 18:18:01,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-02-23 18:18:01,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4069 states. [2021-02-23 18:18:02,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4069 to 3861. [2021-02-23 18:18:02,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3861 states. [2021-02-23 18:18:02,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3861 states to 3861 states and 4641 transitions. [2021-02-23 18:18:02,694 INFO L78 Accepts]: Start accepts. Automaton has 3861 states and 4641 transitions. Word has length 212 [2021-02-23 18:18:02,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:18:02,695 INFO L480 AbstractCegarLoop]: Abstraction has 3861 states and 4641 transitions. [2021-02-23 18:18:02,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 18:18:02,695 INFO L276 IsEmpty]: Start isEmpty. Operand 3861 states and 4641 transitions. [2021-02-23 18:18:02,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-02-23 18:18:02,710 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:18:02,711 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:02,711 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 18:18:02,711 INFO L428 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:18:02,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:18:02,712 INFO L82 PathProgramCache]: Analyzing trace with hash 88994596, now seen corresponding path program 1 times [2021-02-23 18:18:02,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:18:02,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325920214] [2021-02-23 18:18:02,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:18:02,841 WARN L141 QuantifierPusher]: treesize reduction 169, result has 50.1 percent of original size [2021-02-23 18:18:02,845 WARN L147 QuantifierPusher]: treesize reduction 169, result has 50.1 percent of original size 170 [2021-02-23 18:18:02,927 WARN L141 QuantifierPusher]: treesize reduction 169, result has 50.1 percent of original size [2021-02-23 18:18:02,931 WARN L147 QuantifierPusher]: treesize reduction 169, result has 50.1 percent of original size 170 [2021-02-23 18:18:03,021 WARN L141 QuantifierPusher]: treesize reduction 169, result has 50.1 percent of original size [2021-02-23 18:18:03,023 WARN L147 QuantifierPusher]: treesize reduction 169, result has 50.1 percent of original size 170 [2021-02-23 18:18:03,114 WARN L141 QuantifierPusher]: treesize reduction 169, result has 50.1 percent of original size [2021-02-23 18:18:03,118 WARN L147 QuantifierPusher]: treesize reduction 169, result has 50.1 percent of original size 170 [2021-02-23 18:18:03,202 WARN L141 QuantifierPusher]: treesize reduction 12, result has 93.4 percent of original size [2021-02-23 18:18:03,206 WARN L147 QuantifierPusher]: treesize reduction 12, result has 93.4 percent of original size 170 [2021-02-23 18:18:03,284 WARN L141 QuantifierPusher]: treesize reduction 12, result has 93.4 percent of original size [2021-02-23 18:18:03,287 WARN L147 QuantifierPusher]: treesize reduction 12, result has 93.4 percent of original size 170 [2021-02-23 18:18:03,365 WARN L141 QuantifierPusher]: treesize reduction 169, result has 50.1 percent of original size [2021-02-23 18:18:03,369 WARN L147 QuantifierPusher]: treesize reduction 169, result has 50.1 percent of original size 170 [2021-02-23 18:18:03,457 WARN L141 QuantifierPusher]: treesize reduction 169, result has 50.1 percent of original size [2021-02-23 18:18:03,460 WARN L147 QuantifierPusher]: treesize reduction 169, result has 50.1 percent of original size 170 [2021-02-23 18:18:03,564 WARN L141 QuantifierPusher]: treesize reduction 177, result has 50.1 percent of original size [2021-02-23 18:18:03,568 WARN L147 QuantifierPusher]: treesize reduction 177, result has 50.1 percent of original size 178 [2021-02-23 18:18:03,669 WARN L141 QuantifierPusher]: treesize reduction 177, result has 50.1 percent of original size [2021-02-23 18:18:03,675 WARN L147 QuantifierPusher]: treesize reduction 177, result has 50.1 percent of original size 178 [2021-02-23 18:18:03,828 WARN L141 QuantifierPusher]: treesize reduction 177, result has 50.1 percent of original size [2021-02-23 18:18:03,833 WARN L147 QuantifierPusher]: treesize reduction 177, result has 50.1 percent of original size 178 [2021-02-23 18:18:03,942 WARN L141 QuantifierPusher]: treesize reduction 177, result has 50.1 percent of original size [2021-02-23 18:18:03,946 WARN L147 QuantifierPusher]: treesize reduction 177, result has 50.1 percent of original size 178 [2021-02-23 18:18:03,947 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-23 18:18:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:18:04,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:18:04,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:18:04,256 WARN L141 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size [2021-02-23 18:18:04,257 WARN L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-02-23 18:18:04,265 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 18:18:04,266 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 18:18:04,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:18:04,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:18:04,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:18:04,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:18:04,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:18:04,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:18:04,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:18:04,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:18:04,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:18:04,339 WARN L141 QuantifierPusher]: treesize reduction 67, result has 20.2 percent of original size [2021-02-23 18:18:04,340 WARN L147 QuantifierPusher]: treesize reduction 67, result has 20.2 percent of original size 17 [2021-02-23 18:18:04,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 18:18:04,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:18:04,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:18:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:18:04,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:18:04,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:18:04,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:18:04,495 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 18:18:04,496 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 18:18:04,513 WARN L141 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size [2021-02-23 18:18:04,514 WARN L147 QuantifierPusher]: treesize reduction 2, result has 86.7 percent of original size 13 [2021-02-23 18:18:04,688 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 18:18:04,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-02-23 18:18:04,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-02-23 18:18:04,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-02-23 18:18:04,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:18:04,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-02-23 18:18:04,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-02-23 18:18:04,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:18:04,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-02-23 18:18:04,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-02-23 18:18:04,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:18:04,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-02-23 18:18:04,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-02-23 18:18:04,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:18:04,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-02-23 18:18:04,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-02-23 18:18:04,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:18:04,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-02-23 18:18:04,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 178 [2021-02-23 18:18:04,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:18:04,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:18:04,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 18:18:04,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-23 18:18:04,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-23 18:18:04,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-23 18:18:04,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-02-23 18:18:04,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:04,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-23 18:18:05,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:05,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-23 18:18:05,081 WARN L141 QuantifierPusher]: treesize reduction 38, result has 45.7 percent of original size [2021-02-23 18:18:05,082 WARN L147 QuantifierPusher]: treesize reduction 38, result has 45.7 percent of original size 32 [2021-02-23 18:18:05,083 WARN L141 QuantifierPusher]: treesize reduction 10, result has 80.8 percent of original size [2021-02-23 18:18:05,084 WARN L147 QuantifierPusher]: treesize reduction 10, result has 80.8 percent of original size 42 [2021-02-23 18:18:05,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:05,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-23 18:18:05,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:05,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-23 18:18:05,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:05,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-23 18:18:05,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:05,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-02-23 18:18:05,265 WARN L141 QuantifierPusher]: treesize reduction 8, result has 76.5 percent of original size [2021-02-23 18:18:05,268 WARN L147 QuantifierPusher]: treesize reduction 8, result has 76.5 percent of original size 26 [2021-02-23 18:18:05,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:05,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-23 18:18:05,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:05,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-23 18:18:05,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:05,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-23 18:18:05,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:05,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-23 18:18:05,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:05,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-23 18:18:05,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:05,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-23 18:18:05,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:05,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-23 18:18:05,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:05,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-02-23 18:18:05,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:05,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-02-23 18:18:05,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:05,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-23 18:18:05,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:05,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-23 18:18:05,871 WARN L141 QuantifierPusher]: treesize reduction 38, result has 52.5 percent of original size [2021-02-23 18:18:05,872 WARN L147 QuantifierPusher]: treesize reduction 38, result has 52.5 percent of original size 42 [2021-02-23 18:18:05,873 WARN L141 QuantifierPusher]: treesize reduction 27, result has 60.9 percent of original size [2021-02-23 18:18:05,877 WARN L147 QuantifierPusher]: treesize reduction 27, result has 60.9 percent of original size 42 [2021-02-23 18:18:05,878 WARN L141 QuantifierPusher]: treesize reduction 25, result has 62.7 percent of original size [2021-02-23 18:18:05,878 WARN L147 QuantifierPusher]: treesize reduction 25, result has 62.7 percent of original size 42 [2021-02-23 18:18:05,879 WARN L141 QuantifierPusher]: treesize reduction 26, result has 61.8 percent of original size [2021-02-23 18:18:05,880 WARN L147 QuantifierPusher]: treesize reduction 26, result has 61.8 percent of original size 42 [2021-02-23 18:18:05,917 WARN L141 QuantifierPusher]: treesize reduction 20, result has 69.7 percent of original size [2021-02-23 18:18:05,918 WARN L147 QuantifierPusher]: treesize reduction 20, result has 69.7 percent of original size 46 [2021-02-23 18:18:06,018 WARN L141 QuantifierPusher]: treesize reduction 27, result has 59.1 percent of original size [2021-02-23 18:18:06,021 WARN L147 QuantifierPusher]: treesize reduction 27, result has 59.1 percent of original size 39 [2021-02-23 18:18:06,024 WARN L141 QuantifierPusher]: treesize reduction 46, result has 45.9 percent of original size [2021-02-23 18:18:06,025 WARN L147 QuantifierPusher]: treesize reduction 46, result has 45.9 percent of original size 39 [2021-02-23 18:18:06,026 WARN L141 QuantifierPusher]: treesize reduction 48, result has 44.8 percent of original size [2021-02-23 18:18:06,027 WARN L147 QuantifierPusher]: treesize reduction 48, result has 44.8 percent of original size 39 [2021-02-23 18:18:06,028 WARN L141 QuantifierPusher]: treesize reduction 38, result has 50.6 percent of original size [2021-02-23 18:18:06,030 WARN L147 QuantifierPusher]: treesize reduction 38, result has 50.6 percent of original size 39 [2021-02-23 18:18:06,032 WARN L141 QuantifierPusher]: treesize reduction 37, result has 51.3 percent of original size [2021-02-23 18:18:06,033 WARN L147 QuantifierPusher]: treesize reduction 37, result has 51.3 percent of original size 39 [2021-02-23 18:18:06,034 WARN L141 QuantifierPusher]: treesize reduction 27, result has 59.1 percent of original size [2021-02-23 18:18:06,034 WARN L147 QuantifierPusher]: treesize reduction 27, result has 59.1 percent of original size 39 [2021-02-23 18:18:06,036 WARN L141 QuantifierPusher]: treesize reduction 46, result has 45.9 percent of original size [2021-02-23 18:18:06,036 WARN L147 QuantifierPusher]: treesize reduction 46, result has 45.9 percent of original size 39 [2021-02-23 18:18:06,037 WARN L141 QuantifierPusher]: treesize reduction 28, result has 58.2 percent of original size [2021-02-23 18:18:06,038 WARN L147 QuantifierPusher]: treesize reduction 28, result has 58.2 percent of original size 39 [2021-02-23 18:18:06,041 WARN L141 QuantifierPusher]: treesize reduction 26, result has 60.0 percent of original size [2021-02-23 18:18:06,043 WARN L147 QuantifierPusher]: treesize reduction 26, result has 60.0 percent of original size 39 [2021-02-23 18:18:06,045 WARN L141 QuantifierPusher]: treesize reduction 28, result has 58.2 percent of original size [2021-02-23 18:18:06,046 WARN L147 QuantifierPusher]: treesize reduction 28, result has 58.2 percent of original size 39 [2021-02-23 18:18:06,047 WARN L141 QuantifierPusher]: treesize reduction 48, result has 44.8 percent of original size [2021-02-23 18:18:06,047 WARN L147 QuantifierPusher]: treesize reduction 48, result has 44.8 percent of original size 39 [2021-02-23 18:18:06,048 WARN L141 QuantifierPusher]: treesize reduction 37, result has 51.3 percent of original size [2021-02-23 18:18:06,049 WARN L147 QuantifierPusher]: treesize reduction 37, result has 51.3 percent of original size 39 [2021-02-23 18:18:06,050 WARN L141 QuantifierPusher]: treesize reduction 27, result has 59.1 percent of original size [2021-02-23 18:18:06,051 WARN L147 QuantifierPusher]: treesize reduction 27, result has 59.1 percent of original size 39 [2021-02-23 18:18:06,052 WARN L141 QuantifierPusher]: treesize reduction 46, result has 45.9 percent of original size [2021-02-23 18:18:06,053 WARN L147 QuantifierPusher]: treesize reduction 46, result has 45.9 percent of original size 39 [2021-02-23 18:18:06,054 WARN L141 QuantifierPusher]: treesize reduction 26, result has 60.0 percent of original size [2021-02-23 18:18:06,054 WARN L147 QuantifierPusher]: treesize reduction 26, result has 60.0 percent of original size 39 [2021-02-23 18:18:06,055 WARN L141 QuantifierPusher]: treesize reduction 27, result has 59.1 percent of original size [2021-02-23 18:18:06,056 WARN L147 QuantifierPusher]: treesize reduction 27, result has 59.1 percent of original size 39 [2021-02-23 18:18:06,057 WARN L141 QuantifierPusher]: treesize reduction 25, result has 60.9 percent of original size [2021-02-23 18:18:06,058 WARN L147 QuantifierPusher]: treesize reduction 25, result has 60.9 percent of original size 39 [2021-02-23 18:18:06,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:06,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:18:06,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:06,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:18:06,060 WARN L141 QuantifierPusher]: treesize reduction 35, result has 2.8 percent of original size [2021-02-23 18:18:06,061 WARN L147 QuantifierPusher]: treesize reduction 35, result has 2.8 percent of original size 1 [2021-02-23 18:18:06,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325920214] [2021-02-23 18:18:06,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:18:06,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-02-23 18:18:06,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998551252] [2021-02-23 18:18:06,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-02-23 18:18:06,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:18:06,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-02-23 18:18:06,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=967, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 18:18:06,064 INFO L87 Difference]: Start difference. First operand 3861 states and 4641 transitions. Second operand 28 states. [2021-02-23 18:18:06,295 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-02-23 18:18:06,450 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-02-23 18:18:06,599 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-02-23 18:18:06,746 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-02-23 18:18:06,900 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-02-23 18:18:07,053 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-02-23 18:18:07,209 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-02-23 18:18:07,373 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-02-23 18:18:07,779 WARN L202 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-02-23 18:18:07,967 WARN L202 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-02-23 18:18:08,232 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-02-23 18:18:11,494 WARN L202 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 101 [2021-02-23 18:18:11,991 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 103 [2021-02-23 18:18:16,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:18:16,954 INFO L93 Difference]: Finished difference Result 8849 states and 10796 transitions. [2021-02-23 18:18:16,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-23 18:18:16,955 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 217 [2021-02-23 18:18:16,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:18:16,991 INFO L225 Difference]: With dead ends: 8849 [2021-02-23 18:18:16,991 INFO L226 Difference]: Without dead ends: 5028 [2021-02-23 18:18:17,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=561, Invalid=2091, Unknown=0, NotChecked=0, Total=2652 [2021-02-23 18:18:17,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2021-02-23 18:18:18,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 4322. [2021-02-23 18:18:18,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4322 states. [2021-02-23 18:18:18,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4322 states to 4322 states and 5115 transitions. [2021-02-23 18:18:18,033 INFO L78 Accepts]: Start accepts. Automaton has 4322 states and 5115 transitions. Word has length 217 [2021-02-23 18:18:18,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:18:18,034 INFO L480 AbstractCegarLoop]: Abstraction has 4322 states and 5115 transitions. [2021-02-23 18:18:18,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-02-23 18:18:18,034 INFO L276 IsEmpty]: Start isEmpty. Operand 4322 states and 5115 transitions. [2021-02-23 18:18:18,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-02-23 18:18:18,050 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:18:18,050 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:18,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 18:18:18,051 INFO L428 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:18:18,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:18:18,051 INFO L82 PathProgramCache]: Analyzing trace with hash 702938594, now seen corresponding path program 1 times [2021-02-23 18:18:18,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:18:18,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395189103] [2021-02-23 18:18:18,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:18:18,098 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 26