/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_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:18:09,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:18:09,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:18:09,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 18:18:09,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:18:09,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:18:09,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:18:09,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:18:09,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:18:09,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:18:09,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:18:09,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:18:09,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:18:09,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:18:09,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:18:09,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:18:09,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 18:18:09,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:18:09,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:18:09,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:18:09,351 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 18:18:09,363 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:18:09,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:18:09,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:18:09,365 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:18:09,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:18:09,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:18:09,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:18:09,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:18:09,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:18:09,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:18:09,366 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:18:09,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:18:09,367 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:18:09,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:18:09,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:18:09,367 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:18:09,367 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:18:09,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:18:09,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:18:09,368 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:18:09,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:18:09,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:18:09,369 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:18:09,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:18:09,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:18:09,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:18:09,832 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:18:09,833 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:18:09,834 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label09.c [2021-02-23 18:18:09,908 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4436ee83/adf88a7d066b467f9163236671320e53/FLAG67732f9db [2021-02-23 18:18:10,649 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:18:10,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label09.c [2021-02-23 18:18:10,667 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4436ee83/adf88a7d066b467f9163236671320e53/FLAG67732f9db [2021-02-23 18:18:10,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4436ee83/adf88a7d066b467f9163236671320e53 [2021-02-23 18:18:10,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:18:10,920 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:18:10,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:18:10,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:18:10,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:18:10,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:18:10" (1/1) ... [2021-02-23 18:18:10,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3419bf91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:18:10, skipping insertion in model container [2021-02-23 18:18:10,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:18:10" (1/1) ... [2021-02-23 18:18:10,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:18:10,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:18:11,382 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_label09.c[19170,19183] [2021-02-23 18:18:11,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:18:11,426 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:18:11,517 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_label09.c[19170,19183] [2021-02-23 18:18:11,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:18:11,597 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:18:11,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:18:11 WrapperNode [2021-02-23 18:18:11,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:18:11,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:18:11,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:18:11,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:18:11,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:18:11" (1/1) ... [2021-02-23 18:18:11,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:18:11" (1/1) ... [2021-02-23 18:18:11,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:18:11" (1/1) ... [2021-02-23 18:18:11,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:18:11" (1/1) ... [2021-02-23 18:18:11,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:18:11" (1/1) ... [2021-02-23 18:18:11,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:18:11" (1/1) ... [2021-02-23 18:18:11,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:18:11" (1/1) ... [2021-02-23 18:18:11,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:18:11,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:18:11,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:18:11,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:18:11,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:18:11" (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 18:18:11,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:18:11,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:18:11,858 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:18:11,859 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2021-02-23 18:18:11,859 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:18:11,859 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2021-02-23 18:18:11,859 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:18:11,860 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:18:11,860 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:18:11,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:18:11,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:18:11,861 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 18:18:11,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:18:11,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:18:11,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:18:11,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:18:11,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:18:11,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:18:11,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:18:13,907 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:18:13,908 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-23 18:18:13,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:18:13 BoogieIcfgContainer [2021-02-23 18:18:13,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:18:13,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:18:13,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:18:13,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:18:13,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:18:10" (1/3) ... [2021-02-23 18:18:13,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc47926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:18:13, skipping insertion in model container [2021-02-23 18:18:13,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:18:11" (2/3) ... [2021-02-23 18:18:13,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc47926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:18:13, skipping insertion in model container [2021-02-23 18:18:13,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:18:13" (3/3) ... [2021-02-23 18:18:13,920 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label09.c [2021-02-23 18:18:13,927 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:18:13,933 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:18:13,952 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:18:13,978 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:18:13,978 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:18:13,978 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:18:13,978 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:18:13,979 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:18:13,979 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:18:13,979 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:18:13,979 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:18:14,006 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states. [2021-02-23 18:18:14,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-02-23 18:18:14,033 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:18:14,034 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] [2021-02-23 18:18:14,034 INFO L428 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:18:14,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:18:14,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1829484809, now seen corresponding path program 1 times [2021-02-23 18:18:14,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:18:14,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498929869] [2021-02-23 18:18:14,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:18:14,133 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:18:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:18:14,581 WARN L141 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size [2021-02-23 18:18:14,583 WARN L147 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size 4 [2021-02-23 18:18:14,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:14,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:18:14,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:14,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:18:14,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:14,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:18:14,780 WARN L202 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-02-23 18:18:14,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:18:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:18:14,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:14,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:18:14,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:14,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:18:14,898 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 18:18:14,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498929869] [2021-02-23 18:18:14,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:18:14,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 18:18:14,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160218079] [2021-02-23 18:18:14,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 18:18:14,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:18:14,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 18:18:14,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:18:14,925 INFO L87 Difference]: Start difference. First operand 536 states. Second operand 5 states. [2021-02-23 18:18:15,199 WARN L202 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-02-23 18:18:17,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:18:17,993 INFO L93 Difference]: Finished difference Result 1214 states and 1660 transitions. [2021-02-23 18:18:17,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 18:18:18,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2021-02-23 18:18:18,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:18:18,040 INFO L225 Difference]: With dead ends: 1214 [2021-02-23 18:18:18,041 INFO L226 Difference]: Without dead ends: 635 [2021-02-23 18:18:18,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:18:18,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2021-02-23 18:18:18,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 621. [2021-02-23 18:18:18,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2021-02-23 18:18:18,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 782 transitions. [2021-02-23 18:18:18,268 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 782 transitions. Word has length 155 [2021-02-23 18:18:18,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:18:18,270 INFO L480 AbstractCegarLoop]: Abstraction has 621 states and 782 transitions. [2021-02-23 18:18:18,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 18:18:18,270 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 782 transitions. [2021-02-23 18:18:18,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-02-23 18:18:18,284 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:18:18,285 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] [2021-02-23 18:18:18,285 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:18:18,286 INFO L428 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:18:18,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:18:18,290 INFO L82 PathProgramCache]: Analyzing trace with hash 779944419, now seen corresponding path program 1 times [2021-02-23 18:18:18,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:18:18,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287914793] [2021-02-23 18:18:18,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:18:18,548 WARN L141 QuantifierPusher]: treesize reduction 12, result has 93.8 percent of original size [2021-02-23 18:18:18,586 WARN L147 QuantifierPusher]: treesize reduction 12, result has 93.8 percent of original size 180 [2021-02-23 18:18:18,739 WARN L141 QuantifierPusher]: treesize reduction 12, result has 93.8 percent of original size [2021-02-23 18:18:18,748 WARN L147 QuantifierPusher]: treesize reduction 12, result has 93.8 percent of original size 180 [2021-02-23 18:18:18,855 WARN L141 QuantifierPusher]: treesize reduction 174, result has 50.1 percent of original size [2021-02-23 18:18:18,860 WARN L147 QuantifierPusher]: treesize reduction 174, result has 50.1 percent of original size 175 [2021-02-23 18:18:18,959 WARN L141 QuantifierPusher]: treesize reduction 174, result has 50.1 percent of original size [2021-02-23 18:18:18,964 WARN L147 QuantifierPusher]: treesize reduction 174, result has 50.1 percent of original size 175 [2021-02-23 18:18:18,965 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-23 18:18:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:18:19,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:19,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:18:19,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:19,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:18:19,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:19,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:18:19,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:19,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:18:19,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:19,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:18:19,299 WARN L141 QuantifierPusher]: treesize reduction 34, result has 20.9 percent of original size [2021-02-23 18:18:19,301 WARN L147 QuantifierPusher]: treesize reduction 34, result has 20.9 percent of original size 9 [2021-02-23 18:18:19,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:19,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:18:19,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:19,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:18:19,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:18:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:18:19,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:19,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:18:19,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:19,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:18:19,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:19,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:18:19,611 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 18:18:19,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:19,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 187 [2021-02-23 18:18:19,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:19,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:18:19,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:19,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-02-23 18:18:19,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 184 [2021-02-23 18:18:19,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:19,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:18:19,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:19,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-02-23 18:18:19,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-02-23 18:18:19,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:19,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:18:19,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:19,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:18:19,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:19,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:18:19,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:19,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 18:18:19,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:19,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 18:18:19,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:19,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-23 18:18:19,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:19,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-02-23 18:18:19,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:19,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-23 18:18:19,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:19,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-23 18:18:19,956 WARN L141 QuantifierPusher]: treesize reduction 14, result has 79.1 percent of original size [2021-02-23 18:18:19,957 WARN L147 QuantifierPusher]: treesize reduction 14, result has 79.1 percent of original size 53 [2021-02-23 18:18:20,030 WARN L141 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size [2021-02-23 18:18:20,033 WARN L147 QuantifierPusher]: treesize reduction 3, result has 96.1 percent of original size 73 [2021-02-23 18:18:20,154 WARN L141 QuantifierPusher]: treesize reduction 25, result has 73.4 percent of original size [2021-02-23 18:18:20,155 WARN L147 QuantifierPusher]: treesize reduction 25, result has 73.4 percent of original size 69 [2021-02-23 18:18:20,157 WARN L141 QuantifierPusher]: treesize reduction 3, result has 96.8 percent of original size [2021-02-23 18:18:20,159 WARN L147 QuantifierPusher]: treesize reduction 3, result has 96.8 percent of original size 92 [2021-02-23 18:18:20,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:20,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-02-23 18:18:20,440 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2021-02-23 18:18:20,448 WARN L141 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size [2021-02-23 18:18:20,450 WARN L147 QuantifierPusher]: treesize reduction 3, result has 97.8 percent of original size 132 [2021-02-23 18:18:20,643 WARN L202 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2021-02-23 18:18:20,649 WARN L141 QuantifierPusher]: treesize reduction 23, result has 86.8 percent of original size [2021-02-23 18:18:20,652 WARN L147 QuantifierPusher]: treesize reduction 23, result has 86.8 percent of original size 151 [2021-02-23 18:18:20,829 WARN L202 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2021-02-23 18:18:20,834 WARN L141 QuantifierPusher]: treesize reduction 161, result has 0.6 percent of original size [2021-02-23 18:18:20,835 WARN L147 QuantifierPusher]: treesize reduction 161, result has 0.6 percent of original size 1 [2021-02-23 18:18:20,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:20,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:18:20,838 WARN L141 QuantifierPusher]: treesize reduction 28, result has 3.4 percent of original size [2021-02-23 18:18:20,838 WARN L147 QuantifierPusher]: treesize reduction 28, result has 3.4 percent of original size 1 [2021-02-23 18:18:20,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287914793] [2021-02-23 18:18:20,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:18:20,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-02-23 18:18:20,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125991124] [2021-02-23 18:18:20,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-23 18:18:20,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:18:20,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-23 18:18:20,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2021-02-23 18:18:20,842 INFO L87 Difference]: Start difference. First operand 621 states and 782 transitions. Second operand 18 states. [2021-02-23 18:18:21,410 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-02-23 18:18:21,657 WARN L202 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 18:18:21,786 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-02-23 18:18:21,959 WARN L202 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-02-23 18:18:22,173 WARN L202 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-02-23 18:18:22,414 WARN L202 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-02-23 18:18:22,636 WARN L202 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-02-23 18:18:22,913 WARN L202 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-02-23 18:18:23,170 WARN L202 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-02-23 18:18:29,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:18:29,940 INFO L93 Difference]: Finished difference Result 2600 states and 3548 transitions. [2021-02-23 18:18:29,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-02-23 18:18:29,941 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 181 [2021-02-23 18:18:29,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:18:29,958 INFO L225 Difference]: With dead ends: 2600 [2021-02-23 18:18:29,959 INFO L226 Difference]: Without dead ends: 2009 [2021-02-23 18:18:29,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=427, Invalid=979, Unknown=0, NotChecked=0, Total=1406 [2021-02-23 18:18:29,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2021-02-23 18:18:30,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 1254. [2021-02-23 18:18:30,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1254 states. [2021-02-23 18:18:30,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1628 transitions. [2021-02-23 18:18:30,314 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1628 transitions. Word has length 181 [2021-02-23 18:18:30,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:18:30,315 INFO L480 AbstractCegarLoop]: Abstraction has 1254 states and 1628 transitions. [2021-02-23 18:18:30,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-23 18:18:30,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1628 transitions. [2021-02-23 18:18:30,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-02-23 18:18:30,323 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:18:30,324 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2021-02-23 18:18:30,324 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:18:30,325 INFO L428 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:18:30,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:18:30,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1416550164, now seen corresponding path program 1 times [2021-02-23 18:18:30,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:18:30,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484876276] [2021-02-23 18:18:30,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:18:30,357 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-02-23 18:18:30,615 WARN L141 QuantifierPusher]: treesize reduction 12, result has 93.1 percent of original size [2021-02-23 18:18:30,619 WARN L147 QuantifierPusher]: treesize reduction 12, result has 93.1 percent of original size 163 [2021-02-23 18:18:30,707 WARN L141 QuantifierPusher]: treesize reduction 12, result has 93.3 percent of original size [2021-02-23 18:18:30,711 WARN L147 QuantifierPusher]: treesize reduction 12, result has 93.3 percent of original size 168 [2021-02-23 18:18:30,792 WARN L141 QuantifierPusher]: treesize reduction 12, result has 93.3 percent of original size [2021-02-23 18:18:30,796 WARN L147 QuantifierPusher]: treesize reduction 12, result has 93.3 percent of original size 168 [2021-02-23 18:18:30,875 WARN L141 QuantifierPusher]: treesize reduction 12, result has 93.1 percent of original size [2021-02-23 18:18:30,879 WARN L147 QuantifierPusher]: treesize reduction 12, result has 93.1 percent of original size 163 [2021-02-23 18:18:30,962 WARN L141 QuantifierPusher]: treesize reduction 12, result has 93.3 percent of original size [2021-02-23 18:18:30,965 WARN L147 QuantifierPusher]: treesize reduction 12, result has 93.3 percent of original size 168 [2021-02-23 18:18:31,047 WARN L141 QuantifierPusher]: treesize reduction 12, result has 93.1 percent of original size [2021-02-23 18:18:31,050 WARN L147 QuantifierPusher]: treesize reduction 12, result has 93.1 percent of original size 163 [2021-02-23 18:18:31,129 WARN L141 QuantifierPusher]: treesize reduction 12, result has 93.3 percent of original size [2021-02-23 18:18:31,132 WARN L147 QuantifierPusher]: treesize reduction 12, result has 93.3 percent of original size 168 [2021-02-23 18:18:31,208 WARN L141 QuantifierPusher]: treesize reduction 12, result has 93.1 percent of original size [2021-02-23 18:18:31,211 WARN L147 QuantifierPusher]: treesize reduction 12, result has 93.1 percent of original size 163 [2021-02-23 18:18:31,296 WARN L141 QuantifierPusher]: treesize reduction 12, result has 93.3 percent of original size [2021-02-23 18:18:31,299 WARN L147 QuantifierPusher]: treesize reduction 12, result has 93.3 percent of original size 168 [2021-02-23 18:18:31,397 WARN L141 QuantifierPusher]: treesize reduction 12, result has 93.3 percent of original size [2021-02-23 18:18:31,400 WARN L147 QuantifierPusher]: treesize reduction 12, result has 93.3 percent of original size 168 [2021-02-23 18:18:31,472 WARN L141 QuantifierPusher]: treesize reduction 12, result has 93.1 percent of original size [2021-02-23 18:18:31,475 WARN L147 QuantifierPusher]: treesize reduction 12, result has 93.1 percent of original size 163 [2021-02-23 18:18:31,549 WARN L141 QuantifierPusher]: treesize reduction 12, result has 93.1 percent of original size [2021-02-23 18:18:31,552 WARN L147 QuantifierPusher]: treesize reduction 12, result has 93.1 percent of original size 163 [2021-02-23 18:18:31,625 WARN L141 QuantifierPusher]: treesize reduction 12, result has 93.3 percent of original size [2021-02-23 18:18:31,628 WARN L147 QuantifierPusher]: treesize reduction 12, result has 93.3 percent of original size 168 [2021-02-23 18:18:31,703 WARN L141 QuantifierPusher]: treesize reduction 12, result has 93.1 percent of original size [2021-02-23 18:18:31,706 WARN L147 QuantifierPusher]: treesize reduction 12, result has 93.1 percent of original size 163 [2021-02-23 18:18:31,778 WARN L141 QuantifierPusher]: treesize reduction 12, result has 93.1 percent of original size [2021-02-23 18:18:31,782 WARN L147 QuantifierPusher]: treesize reduction 12, result has 93.1 percent of original size 163 [2021-02-23 18:18:31,855 WARN L141 QuantifierPusher]: treesize reduction 12, result has 93.3 percent of original size [2021-02-23 18:18:31,858 WARN L147 QuantifierPusher]: treesize reduction 12, result has 93.3 percent of original size 168 [2021-02-23 18:18:31,859 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-23 18:18:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:18:32,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:18:32,200 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 18:18:32,200 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 18:18:32,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:18:32,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:18:32,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:18:32,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:18:32,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:18:32,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:18:32,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:18:32,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:18:32,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:18:32,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:18:32,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:18:32,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:18:32,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 18:18:32,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:18:32,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:18:32,280 WARN L141 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size [2021-02-23 18:18:32,284 WARN L147 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size 4 [2021-02-23 18:18:32,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:18:32,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:18:32,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:18:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:18:32,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:18:32,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:18:32,440 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 18:18:32,441 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 18:18:32,459 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-23 18:18:32,460 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-23 18:18:32,610 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 18:18:32,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 170 [2021-02-23 18:18:32,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-02-23 18:18:32,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-02-23 18:18:32,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 170 [2021-02-23 18:18:32,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-02-23 18:18:32,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 170 [2021-02-23 18:18:32,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-02-23 18:18:32,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 170 [2021-02-23 18:18:32,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-02-23 18:18:32,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:18:32,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-02-23 18:18:32,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-02-23 18:18:32,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:18:32,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-02-23 18:18:32,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-02-23 18:18:32,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:18:32,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:18:32,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:18:32,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 18:18:32,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 18:18:32,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-23 18:18:32,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-02-23 18:18:32,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-23 18:18:32,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:32,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-23 18:18:32,995 WARN L141 QuantifierPusher]: treesize reduction 38, result has 43.3 percent of original size [2021-02-23 18:18:32,996 WARN L147 QuantifierPusher]: treesize reduction 38, result has 43.3 percent of original size 29 [2021-02-23 18:18:32,997 WARN L141 QuantifierPusher]: treesize reduction 4, result has 92.9 percent of original size [2021-02-23 18:18:32,998 WARN L147 QuantifierPusher]: treesize reduction 4, result has 92.9 percent of original size 52 [2021-02-23 18:18:33,051 WARN L141 QuantifierPusher]: treesize reduction 25, result has 67.5 percent of original size [2021-02-23 18:18:33,053 WARN L147 QuantifierPusher]: treesize reduction 25, result has 67.5 percent of original size 52 [2021-02-23 18:18:33,054 WARN L141 QuantifierPusher]: treesize reduction 26, result has 66.7 percent of original size [2021-02-23 18:18:33,056 WARN L147 QuantifierPusher]: treesize reduction 26, result has 66.7 percent of original size 52 [2021-02-23 18:18:33,058 WARN L141 QuantifierPusher]: treesize reduction 24, result has 68.4 percent of original size [2021-02-23 18:18:33,059 WARN L147 QuantifierPusher]: treesize reduction 24, result has 68.4 percent of original size 52 [2021-02-23 18:18:33,060 WARN L141 QuantifierPusher]: treesize reduction 4, result has 94.9 percent of original size [2021-02-23 18:18:33,061 WARN L147 QuantifierPusher]: treesize reduction 4, result has 94.9 percent of original size 75 [2021-02-23 18:18:33,132 WARN L141 QuantifierPusher]: treesize reduction 46, result has 62.0 percent of original size [2021-02-23 18:18:33,134 WARN L147 QuantifierPusher]: treesize reduction 46, result has 62.0 percent of original size 75 [2021-02-23 18:18:33,135 WARN L141 QuantifierPusher]: treesize reduction 13, result has 89.4 percent of original size [2021-02-23 18:18:33,137 WARN L147 QuantifierPusher]: treesize reduction 13, result has 89.4 percent of original size 110 [2021-02-23 18:18:33,283 WARN L202 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2021-02-23 18:18:33,286 WARN L141 QuantifierPusher]: treesize reduction 38, result has 71.6 percent of original size [2021-02-23 18:18:33,287 WARN L147 QuantifierPusher]: treesize reduction 38, result has 71.6 percent of original size 96 [2021-02-23 18:18:33,289 WARN L141 QuantifierPusher]: treesize reduction 37, result has 72.2 percent of original size [2021-02-23 18:18:33,290 WARN L147 QuantifierPusher]: treesize reduction 37, result has 72.2 percent of original size 96 [2021-02-23 18:18:33,292 WARN L141 QuantifierPusher]: treesize reduction 27, result has 78.0 percent of original size [2021-02-23 18:18:33,293 WARN L147 QuantifierPusher]: treesize reduction 27, result has 78.0 percent of original size 96 [2021-02-23 18:18:33,295 WARN L141 QuantifierPusher]: treesize reduction 46, result has 67.6 percent of original size [2021-02-23 18:18:33,296 WARN L147 QuantifierPusher]: treesize reduction 46, result has 67.6 percent of original size 96 [2021-02-23 18:18:33,298 WARN L141 QuantifierPusher]: treesize reduction 28, result has 77.4 percent of original size [2021-02-23 18:18:33,299 WARN L147 QuantifierPusher]: treesize reduction 28, result has 77.4 percent of original size 96 [2021-02-23 18:18:33,300 WARN L141 QuantifierPusher]: treesize reduction 26, result has 78.7 percent of original size [2021-02-23 18:18:33,303 WARN L147 QuantifierPusher]: treesize reduction 26, result has 78.7 percent of original size 96 [2021-02-23 18:18:33,305 WARN L141 QuantifierPusher]: treesize reduction 28, result has 77.4 percent of original size [2021-02-23 18:18:33,306 WARN L147 QuantifierPusher]: treesize reduction 28, result has 77.4 percent of original size 96 [2021-02-23 18:18:33,308 WARN L141 QuantifierPusher]: treesize reduction 13, result has 91.0 percent of original size [2021-02-23 18:18:33,309 WARN L147 QuantifierPusher]: treesize reduction 13, result has 91.0 percent of original size 131 [2021-02-23 18:18:33,501 WARN L202 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2021-02-23 18:18:33,508 WARN L141 QuantifierPusher]: treesize reduction 37, result has 76.0 percent of original size [2021-02-23 18:18:33,510 WARN L147 QuantifierPusher]: treesize reduction 37, result has 76.0 percent of original size 117 [2021-02-23 18:18:33,512 WARN L141 QuantifierPusher]: treesize reduction 27, result has 81.3 percent of original size [2021-02-23 18:18:33,513 WARN L147 QuantifierPusher]: treesize reduction 27, result has 81.3 percent of original size 117 [2021-02-23 18:18:33,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:33,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:18:33,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:33,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:18:33,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:18:33,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:18:33,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484876276] [2021-02-23 18:18:33,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:18:33,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-23 18:18:33,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192563023] [2021-02-23 18:18:33,520 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-23 18:18:33,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:18:33,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-23 18:18:33,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=247, Unknown=0, NotChecked=0, Total=380 [2021-02-23 18:18:33,521 INFO L87 Difference]: Start difference. First operand 1254 states and 1628 transitions. Second operand 17 states. [2021-02-23 18:18:33,709 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-02-23 18:18:33,849 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-02-23 18:18:33,983 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-02-23 18:18:34,114 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-02-23 18:18:34,268 WARN L202 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 18:18:34,389 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-23 18:18:34,529 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-02-23 18:18:34,715 WARN L202 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-02-23 18:18:34,961 WARN L202 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-02-23 18:18:35,220 WARN L202 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-02-23 18:18:35,655 WARN L202 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-02-23 18:18:41,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:18:41,621 INFO L93 Difference]: Finished difference Result 4060 states and 5624 transitions. [2021-02-23 18:18:41,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-23 18:18:41,621 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 193 [2021-02-23 18:18:41,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:18:41,647 INFO L225 Difference]: With dead ends: 4060 [2021-02-23 18:18:41,648 INFO L226 Difference]: Without dead ends: 2836 [2021-02-23 18:18:41,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 34 SyntacticMatches, 14 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=441, Invalid=965, Unknown=0, NotChecked=0, Total=1406 [2021-02-23 18:18:41,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2836 states. [2021-02-23 18:18:42,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2836 to 2182. [2021-02-23 18:18:42,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2182 states. [2021-02-23 18:18:42,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2182 states to 2182 states and 2679 transitions. [2021-02-23 18:18:42,283 INFO L78 Accepts]: Start accepts. Automaton has 2182 states and 2679 transitions. Word has length 193 [2021-02-23 18:18:42,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:18:42,283 INFO L480 AbstractCegarLoop]: Abstraction has 2182 states and 2679 transitions. [2021-02-23 18:18:42,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-23 18:18:42,284 INFO L276 IsEmpty]: Start isEmpty. Operand 2182 states and 2679 transitions. [2021-02-23 18:18:42,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-02-23 18:18:42,294 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:18:42,295 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] [2021-02-23 18:18:42,295 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:18:42,295 INFO L428 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:18:42,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:18:42,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1645940268, now seen corresponding path program 1 times [2021-02-23 18:18:42,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:18:42,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559561286] [2021-02-23 18:18:42,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:18:42,320 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 21 [2021-02-23 18:19:15,729 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 1100560 conjuctions. 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