/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/recursive-simple/id_i10_o10-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:28:10,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:28:10,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:28:10,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 20:28:10,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:28:10,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:28:10,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:28:10,796 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:28:10,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:28:10,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:28:10,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:28:10,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:28:10,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:28:10,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:28:10,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:28:10,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:28:10,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 20:28:10,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:28:10,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:28:10,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:28:10,860 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:28:10,888 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:28:10,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:28:10,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:28:10,892 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:28:10,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:28:10,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:28:10,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:28:10,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:28:10,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:28:10,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:28:10,894 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:28:10,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:28:10,895 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:28:10,896 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:28:10,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:28:10,896 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:28:10,897 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:28:10,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:28:10,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:28:10,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:28:10,898 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:28:10,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:28:10,898 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:28:11,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:28:11,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:28:11,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:28:11,435 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:28:11,438 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:28:11,440 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i10_o10-2.c [2021-02-21 20:28:11,548 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbcf9ab02/d949af71f2ae48689dd2b8eeb20f3e2e/FLAG35d8d0934 [2021-02-21 20:28:12,250 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:28:12,251 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i10_o10-2.c [2021-02-21 20:28:12,259 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbcf9ab02/d949af71f2ae48689dd2b8eeb20f3e2e/FLAG35d8d0934 [2021-02-21 20:28:12,623 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbcf9ab02/d949af71f2ae48689dd2b8eeb20f3e2e [2021-02-21 20:28:12,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:28:12,647 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:28:12,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:28:12,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:28:12,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:28:12,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:28:12" (1/1) ... [2021-02-21 20:28:12,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40d95c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:28:12, skipping insertion in model container [2021-02-21 20:28:12,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:28:12" (1/1) ... [2021-02-21 20:28:12,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:28:12,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:28:12,855 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i10_o10-2.c[454,467] [2021-02-21 20:28:12,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:28:12,877 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:28:12,898 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i10_o10-2.c[454,467] [2021-02-21 20:28:12,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:28:12,921 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:28:12,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:28:12 WrapperNode [2021-02-21 20:28:12,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:28:12,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:28:12,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:28:12,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:28:12,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:28:12" (1/1) ... [2021-02-21 20:28:12,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:28:12" (1/1) ... [2021-02-21 20:28:12,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:28:12" (1/1) ... [2021-02-21 20:28:12,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:28:12" (1/1) ... [2021-02-21 20:28:12,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:28:12" (1/1) ... [2021-02-21 20:28:12,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:28:12" (1/1) ... [2021-02-21 20:28:12,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:28:12" (1/1) ... [2021-02-21 20:28:12,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:28:12,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:28:12,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:28:12,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:28:12,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:28:12" (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 [2021-02-21 20:28:13,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:28:13,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:28:13,121 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:28:13,122 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-02-21 20:28:13,122 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:28:13,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 20:28:13,123 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:28:13,123 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:28:13,124 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:28:13,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:28:13,125 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-02-21 20:28:13,125 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:28:13,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:28:13,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:28:13,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:28:13,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:28:13,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:28:13,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:28:13,674 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:28:13,678 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 20:28:13,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:28:13 BoogieIcfgContainer [2021-02-21 20:28:13,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:28:13,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:28:13,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:28:13,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:28:13,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:28:12" (1/3) ... [2021-02-21 20:28:13,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2789de2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:28:13, skipping insertion in model container [2021-02-21 20:28:13,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:28:12" (2/3) ... [2021-02-21 20:28:13,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2789de2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:28:13, skipping insertion in model container [2021-02-21 20:28:13,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:28:13" (3/3) ... [2021-02-21 20:28:13,712 INFO L111 eAbstractionObserver]: Analyzing ICFG id_i10_o10-2.c [2021-02-21 20:28:13,741 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:28:13,760 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:28:13,796 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:28:13,878 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:28:13,879 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:28:13,879 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:28:13,881 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:28:13,881 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:28:13,881 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:28:13,882 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:28:13,882 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:28:13,917 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2021-02-21 20:28:13,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-21 20:28:13,933 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:28:13,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:28:13,935 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:28:13,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:28:13,955 INFO L82 PathProgramCache]: Analyzing trace with hash -777358502, now seen corresponding path program 1 times [2021-02-21 20:28:13,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:28:13,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485831084] [2021-02-21 20:28:13,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:28:14,087 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:28:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:14,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:14,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:14,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:14,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:14,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:14,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:14,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:28:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:14,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:14,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:14,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:28:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:14,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:14,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:14,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:14,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:14,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:28:14,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485831084] [2021-02-21 20:28:14,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:28:14,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 20:28:14,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86754040] [2021-02-21 20:28:14,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 20:28:14,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:28:14,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 20:28:14,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:28:14,759 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 6 states. [2021-02-21 20:28:15,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:28:15,241 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2021-02-21 20:28:15,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 20:28:15,244 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-02-21 20:28:15,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:28:15,256 INFO L225 Difference]: With dead ends: 46 [2021-02-21 20:28:15,256 INFO L226 Difference]: Without dead ends: 31 [2021-02-21 20:28:15,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-21 20:28:15,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-02-21 20:28:15,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-02-21 20:28:15,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-02-21 20:28:15,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-02-21 20:28:15,329 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 24 [2021-02-21 20:28:15,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:28:15,330 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-02-21 20:28:15,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 20:28:15,331 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-02-21 20:28:15,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-21 20:28:15,333 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:28:15,333 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:28:15,334 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:28:15,334 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:28:15,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:28:15,335 INFO L82 PathProgramCache]: Analyzing trace with hash 814440848, now seen corresponding path program 1 times [2021-02-21 20:28:15,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:28:15,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706434924] [2021-02-21 20:28:15,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:28:15,339 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:28:15,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:15,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:15,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:15,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:15,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:15,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:15,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:15,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:28:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:15,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:15,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:15,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:28:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:15,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:15,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:15,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:15,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:15,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:15,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:15,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:15,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:15,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:15,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-21 20:28:15,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706434924] [2021-02-21 20:28:15,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:28:15,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 20:28:15,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849689120] [2021-02-21 20:28:15,534 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 20:28:15,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:28:15,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 20:28:15,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-21 20:28:15,536 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 7 states. [2021-02-21 20:28:15,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:28:15,915 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2021-02-21 20:28:15,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 20:28:15,920 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2021-02-21 20:28:15,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:28:15,925 INFO L225 Difference]: With dead ends: 42 [2021-02-21 20:28:15,926 INFO L226 Difference]: Without dead ends: 36 [2021-02-21 20:28:15,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-02-21 20:28:15,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-02-21 20:28:15,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-02-21 20:28:15,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-02-21 20:28:15,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2021-02-21 20:28:15,969 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 32 [2021-02-21 20:28:15,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:28:15,971 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2021-02-21 20:28:15,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 20:28:15,972 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2021-02-21 20:28:15,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-21 20:28:15,976 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:28:15,976 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:28:15,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:28:15,977 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:28:15,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:28:15,978 INFO L82 PathProgramCache]: Analyzing trace with hash -545888486, now seen corresponding path program 2 times [2021-02-21 20:28:15,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:28:15,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338789727] [2021-02-21 20:28:15,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:28:15,986 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:28:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:16,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:16,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:16,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:16,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:16,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:16,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:16,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:28:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:16,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:16,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:16,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:28:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:16,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:16,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:16,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:16,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:16,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:16,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:16,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:16,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:16,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:16,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:16,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:16,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:16,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:16,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:16,377 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-02-21 20:28:16,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338789727] [2021-02-21 20:28:16,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:28:16,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 20:28:16,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550561476] [2021-02-21 20:28:16,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 20:28:16,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:28:16,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 20:28:16,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-21 20:28:16,392 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 8 states. [2021-02-21 20:28:16,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:28:16,843 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2021-02-21 20:28:16,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-21 20:28:16,844 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2021-02-21 20:28:16,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:28:16,846 INFO L225 Difference]: With dead ends: 47 [2021-02-21 20:28:16,846 INFO L226 Difference]: Without dead ends: 41 [2021-02-21 20:28:16,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-02-21 20:28:16,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-02-21 20:28:16,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-02-21 20:28:16,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-02-21 20:28:16,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-02-21 20:28:16,864 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 40 [2021-02-21 20:28:16,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:28:16,864 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-02-21 20:28:16,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 20:28:16,865 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-02-21 20:28:16,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-21 20:28:16,867 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:28:16,867 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:28:16,867 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 20:28:16,867 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:28:16,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:28:16,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1925368272, now seen corresponding path program 3 times [2021-02-21 20:28:16,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:28:16,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762273868] [2021-02-21 20:28:16,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:28:16,872 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:28:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:16,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:16,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:16,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:16,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:16,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:16,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:16,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:28:16,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:16,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:16,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:16,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:28:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:17,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:17,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:17,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:17,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:17,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:17,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:17,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:17,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:17,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:17,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:17,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:17,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:17,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:17,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:17,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:17,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:17,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:17,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:17,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:17,165 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-02-21 20:28:17,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762273868] [2021-02-21 20:28:17,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:28:17,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 20:28:17,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834863173] [2021-02-21 20:28:17,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 20:28:17,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:28:17,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 20:28:17,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-21 20:28:17,175 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 9 states. [2021-02-21 20:28:17,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:28:17,551 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2021-02-21 20:28:17,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 20:28:17,552 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2021-02-21 20:28:17,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:28:17,554 INFO L225 Difference]: With dead ends: 52 [2021-02-21 20:28:17,554 INFO L226 Difference]: Without dead ends: 46 [2021-02-21 20:28:17,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-02-21 20:28:17,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-02-21 20:28:17,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-02-21 20:28:17,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-02-21 20:28:17,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2021-02-21 20:28:17,574 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 48 [2021-02-21 20:28:17,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:28:17,574 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2021-02-21 20:28:17,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 20:28:17,575 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2021-02-21 20:28:17,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-21 20:28:17,577 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:28:17,577 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:28:17,577 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 20:28:17,577 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:28:17,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:28:17,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1702046426, now seen corresponding path program 4 times [2021-02-21 20:28:17,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:28:17,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929774864] [2021-02-21 20:28:17,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:28:17,582 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:28:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:17,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:17,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:17,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:17,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:17,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:17,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:17,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:28:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:17,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:17,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:17,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:28:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:17,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:17,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:17,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:17,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:17,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:17,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:17,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:17,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:17,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:17,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:17,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:17,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:17,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:17,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:17,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:17,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:17,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:17,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:17,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:17,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:17,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:17,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:17,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:17,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:17,866 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-02-21 20:28:17,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929774864] [2021-02-21 20:28:17,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:28:17,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 20:28:17,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670564344] [2021-02-21 20:28:17,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 20:28:17,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:28:17,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 20:28:17,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-02-21 20:28:17,870 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 10 states. [2021-02-21 20:28:18,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:28:18,335 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2021-02-21 20:28:18,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 20:28:18,336 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2021-02-21 20:28:18,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:28:18,338 INFO L225 Difference]: With dead ends: 57 [2021-02-21 20:28:18,338 INFO L226 Difference]: Without dead ends: 51 [2021-02-21 20:28:18,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-02-21 20:28:18,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-02-21 20:28:18,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-02-21 20:28:18,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-02-21 20:28:18,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2021-02-21 20:28:18,356 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 56 [2021-02-21 20:28:18,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:28:18,356 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2021-02-21 20:28:18,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 20:28:18,357 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2021-02-21 20:28:18,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-02-21 20:28:18,358 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:28:18,358 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:28:18,359 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 20:28:18,359 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:28:18,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:28:18,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1874632176, now seen corresponding path program 5 times [2021-02-21 20:28:18,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:28:18,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619418839] [2021-02-21 20:28:18,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:28:18,364 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:28:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:18,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:18,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:18,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:18,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:18,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:18,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:18,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:28:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:18,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:18,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:18,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:28:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:18,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:18,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:18,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:18,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:18,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:18,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:18,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:18,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:18,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:18,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:18,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:18,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:18,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:18,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:18,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:18,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:18,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:18,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:18,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:18,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:18,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:18,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:18,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:18,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:18,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:18,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:18,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:18,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:18,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:18,723 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-02-21 20:28:18,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619418839] [2021-02-21 20:28:18,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:28:18,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 20:28:18,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107993958] [2021-02-21 20:28:18,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 20:28:18,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:28:18,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 20:28:18,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-02-21 20:28:18,727 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 11 states. [2021-02-21 20:28:19,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:28:19,192 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2021-02-21 20:28:19,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 20:28:19,192 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 64 [2021-02-21 20:28:19,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:28:19,194 INFO L225 Difference]: With dead ends: 62 [2021-02-21 20:28:19,194 INFO L226 Difference]: Without dead ends: 56 [2021-02-21 20:28:19,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-02-21 20:28:19,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-02-21 20:28:19,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-02-21 20:28:19,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-02-21 20:28:19,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2021-02-21 20:28:19,213 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 64 [2021-02-21 20:28:19,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:28:19,213 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2021-02-21 20:28:19,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 20:28:19,214 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2021-02-21 20:28:19,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-02-21 20:28:19,215 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:28:19,216 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:28:19,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 20:28:19,216 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:28:19,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:28:19,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1809628826, now seen corresponding path program 6 times [2021-02-21 20:28:19,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:28:19,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930987171] [2021-02-21 20:28:19,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:28:19,221 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:28:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:19,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:19,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:19,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:19,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:19,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:19,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:19,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:28:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:19,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:19,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:19,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:28:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:19,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:19,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:19,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:19,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:19,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:19,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:19,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:19,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:19,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:19,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:19,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:19,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:19,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:19,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:19,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:19,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:19,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:19,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:19,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:19,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:19,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:19,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:19,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:19,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:19,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:19,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:19,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:19,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:19,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:19,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:19,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:19,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:19,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:19,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:19,539 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-02-21 20:28:19,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930987171] [2021-02-21 20:28:19,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:28:19,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-21 20:28:19,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79192707] [2021-02-21 20:28:19,541 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-21 20:28:19,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:28:19,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-21 20:28:19,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-02-21 20:28:19,543 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 12 states. [2021-02-21 20:28:20,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:28:20,127 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2021-02-21 20:28:20,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 20:28:20,128 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2021-02-21 20:28:20,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:28:20,130 INFO L225 Difference]: With dead ends: 67 [2021-02-21 20:28:20,130 INFO L226 Difference]: Without dead ends: 61 [2021-02-21 20:28:20,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=286, Unknown=0, NotChecked=0, Total=420 [2021-02-21 20:28:20,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-21 20:28:20,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-02-21 20:28:20,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-02-21 20:28:20,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2021-02-21 20:28:20,151 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 72 [2021-02-21 20:28:20,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:28:20,151 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2021-02-21 20:28:20,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-21 20:28:20,151 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2021-02-21 20:28:20,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-02-21 20:28:20,153 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:28:20,154 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:28:20,154 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 20:28:20,154 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:28:20,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:28:20,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1448159824, now seen corresponding path program 7 times [2021-02-21 20:28:20,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:28:20,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991009121] [2021-02-21 20:28:20,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:28:20,159 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:28:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:20,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:20,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:20,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:20,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:20,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:20,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:20,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:28:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:20,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:20,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:20,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:28:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:20,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:20,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:20,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:20,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:20,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:20,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:20,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:20,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:20,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:20,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:20,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:20,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:20,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:20,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:20,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:20,369 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:20,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:20,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:20,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:20,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:20,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:20,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:20,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:20,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:20,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:20,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:20,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:20,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:20,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:20,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:20,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:20,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:20,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:20,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:20,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:20,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:20,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:20,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:20,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:20,531 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-02-21 20:28:20,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991009121] [2021-02-21 20:28:20,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:28:20,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-21 20:28:20,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807586905] [2021-02-21 20:28:20,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-21 20:28:20,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:28:20,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-21 20:28:20,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-02-21 20:28:20,534 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 13 states. [2021-02-21 20:28:21,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:28:21,122 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2021-02-21 20:28:21,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-21 20:28:21,123 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 80 [2021-02-21 20:28:21,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:28:21,125 INFO L225 Difference]: With dead ends: 72 [2021-02-21 20:28:21,125 INFO L226 Difference]: Without dead ends: 66 [2021-02-21 20:28:21,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2021-02-21 20:28:21,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-02-21 20:28:21,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-02-21 20:28:21,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-02-21 20:28:21,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2021-02-21 20:28:21,142 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 80 [2021-02-21 20:28:21,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:28:21,143 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2021-02-21 20:28:21,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-21 20:28:21,143 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2021-02-21 20:28:21,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-02-21 20:28:21,144 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:28:21,144 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:28:21,145 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 20:28:21,145 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:28:21,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:28:21,145 INFO L82 PathProgramCache]: Analyzing trace with hash -537976230, now seen corresponding path program 8 times [2021-02-21 20:28:21,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:28:21,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129177739] [2021-02-21 20:28:21,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:28:21,148 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:28:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:21,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:21,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:21,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:21,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:21,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:21,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:21,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:28:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:21,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:21,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:21,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:28:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:21,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:21,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:21,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:21,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:21,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:21,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:21,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:21,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:21,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:21,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:21,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:21,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:21,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:21,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:21,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:21,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:21,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:21,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:21,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:21,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:21,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:21,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:21,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:21,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:21,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:21,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:21,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:21,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:21,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:21,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:21,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:21,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:21,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:21,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:21,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:21,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:21,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:21,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:21,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:21,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:21,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:21,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:21,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:21,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:21,599 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-02-21 20:28:21,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129177739] [2021-02-21 20:28:21,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:28:21,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 20:28:21,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721158147] [2021-02-21 20:28:21,602 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 20:28:21,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:28:21,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 20:28:21,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-02-21 20:28:21,606 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 14 states. [2021-02-21 20:28:22,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:28:22,261 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2021-02-21 20:28:22,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 20:28:22,262 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 88 [2021-02-21 20:28:22,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:28:22,264 INFO L225 Difference]: With dead ends: 77 [2021-02-21 20:28:22,264 INFO L226 Difference]: Without dead ends: 71 [2021-02-21 20:28:22,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2021-02-21 20:28:22,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-02-21 20:28:22,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-02-21 20:28:22,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-02-21 20:28:22,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2021-02-21 20:28:22,281 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 88 [2021-02-21 20:28:22,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:28:22,282 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2021-02-21 20:28:22,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 20:28:22,282 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2021-02-21 20:28:22,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-02-21 20:28:22,283 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:28:22,284 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:28:22,284 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 20:28:22,284 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:28:22,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:28:22,285 INFO L82 PathProgramCache]: Analyzing trace with hash -852483440, now seen corresponding path program 9 times [2021-02-21 20:28:22,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:28:22,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966833839] [2021-02-21 20:28:22,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:28:22,288 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:28:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:22,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:22,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:22,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:22,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:22,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:22,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:22,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:28:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:22,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:22,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:22,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:28:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:22,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:22,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:22,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:22,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:22,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:22,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:22,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:22,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:22,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:22,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:22,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:22,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:22,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:22,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:22,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:22,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:22,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:22,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:22,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:22,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:22,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:22,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:22,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:22,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:22,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:22,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:22,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:22,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:22,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:22,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:22,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:22,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:22,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:22,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:22,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:22,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:22,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:22,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:22,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:22,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:22,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:22,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:22,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:22,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:22,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:22,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:22,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:22,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:22,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:22,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:22,761 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-02-21 20:28:22,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966833839] [2021-02-21 20:28:22,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:28:22,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-21 20:28:22,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49983938] [2021-02-21 20:28:22,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-21 20:28:22,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:28:22,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-21 20:28:22,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-02-21 20:28:22,765 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 15 states. [2021-02-21 20:28:23,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:28:23,441 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2021-02-21 20:28:23,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 20:28:23,441 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 96 [2021-02-21 20:28:23,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:28:23,443 INFO L225 Difference]: With dead ends: 82 [2021-02-21 20:28:23,443 INFO L226 Difference]: Without dead ends: 76 [2021-02-21 20:28:23,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=230, Invalid=472, Unknown=0, NotChecked=0, Total=702 [2021-02-21 20:28:23,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-02-21 20:28:23,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-02-21 20:28:23,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-02-21 20:28:23,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2021-02-21 20:28:23,461 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 96 [2021-02-21 20:28:23,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:28:23,462 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2021-02-21 20:28:23,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-21 20:28:23,462 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2021-02-21 20:28:23,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-02-21 20:28:23,463 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:28:23,463 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:28:23,464 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 20:28:23,464 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:28:23,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:28:23,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1407604250, now seen corresponding path program 10 times [2021-02-21 20:28:23,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:28:23,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041358072] [2021-02-21 20:28:23,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:28:23,468 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:28:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:23,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:23,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:23,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:23,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:23,576 WARN L141 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-02-21 20:28:23,577 WARN L147 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size 7 [2021-02-21 20:28:23,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:23,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:23,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:28:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:23,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:23,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:23,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:28:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:23,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:23,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:23,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:23,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:23,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:23,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:23,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:23,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:23,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:23,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:23,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:23,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:23,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:23,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:23,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:23,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:23,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:23,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:23,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:23,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:23,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:23,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:23,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:23,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:23,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:23,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:23,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:23,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:23,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:23,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:23,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:23,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:23,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:23,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:23,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:23,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:23,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:23,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:23,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:24,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:24,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:24,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:24,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:24,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:24,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:24,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:24,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:24,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:24,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:24,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:24,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:24,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:24,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:24,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:24,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:24,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:24,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:24,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:24,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:24,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:24,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:24,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:24,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:24,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:24,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:24,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:24,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:24,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:24,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:24,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:24,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:24,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:24,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:24,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:24,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:24,455 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-02-21 20:28:24,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041358072] [2021-02-21 20:28:24,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:28:24,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-02-21 20:28:24,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781907249] [2021-02-21 20:28:24,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-02-21 20:28:24,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:28:24,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-02-21 20:28:24,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2021-02-21 20:28:24,458 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand 26 states. [2021-02-21 20:28:27,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:28:27,191 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2021-02-21 20:28:27,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-21 20:28:27,196 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 104 [2021-02-21 20:28:27,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:28:27,198 INFO L225 Difference]: With dead ends: 87 [2021-02-21 20:28:27,198 INFO L226 Difference]: Without dead ends: 81 [2021-02-21 20:28:27,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=218, Invalid=3322, Unknown=0, NotChecked=0, Total=3540 [2021-02-21 20:28:27,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-02-21 20:28:27,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-02-21 20:28:27,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-02-21 20:28:27,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2021-02-21 20:28:27,217 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 104 [2021-02-21 20:28:27,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:28:27,217 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2021-02-21 20:28:27,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-02-21 20:28:27,218 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2021-02-21 20:28:27,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-02-21 20:28:27,219 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:28:27,219 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:28:27,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-21 20:28:27,219 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:28:27,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:28:27,220 INFO L82 PathProgramCache]: Analyzing trace with hash 2015644368, now seen corresponding path program 11 times [2021-02-21 20:28:27,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:28:27,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122752182] [2021-02-21 20:28:27,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:28:27,223 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:28:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:27,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:27,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:27,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:27,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:27,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:27,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:27,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:28:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:27,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:27,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:27,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:28:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:27,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:27,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:27,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:27,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:27,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:27,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:27,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:27,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:27,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:27,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:27,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:27,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:27,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:27,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:27,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:27,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:27,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:27,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:27,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:27,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:27,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:27,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:27,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:27,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:27,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:27,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:27,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:27,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:27,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:27,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:27,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:27,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:27,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:27,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:27,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:27,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:27,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:27,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:27,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:27,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:27,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:27,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:27,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:27,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:27,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:27,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:27,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:27,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:27,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:27,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:27,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:27,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:27,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:27,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:27,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:27,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:27,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:27,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:27,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:27,783 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-02-21 20:28:27,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122752182] [2021-02-21 20:28:27,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:28:27,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-21 20:28:27,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448814776] [2021-02-21 20:28:27,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-21 20:28:27,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:28:27,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-21 20:28:27,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2021-02-21 20:28:27,786 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 17 states. [2021-02-21 20:28:28,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:28:28,587 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2021-02-21 20:28:28,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-21 20:28:28,587 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 112 [2021-02-21 20:28:28,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:28:28,588 INFO L225 Difference]: With dead ends: 81 [2021-02-21 20:28:28,588 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 20:28:28,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=276, Invalid=654, Unknown=0, NotChecked=0, Total=930 [2021-02-21 20:28:28,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 20:28:28,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 20:28:28,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 20:28:28,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 20:28:28,590 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 112 [2021-02-21 20:28:28,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:28:28,591 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 20:28:28,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-21 20:28:28,591 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 20:28:28,591 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 20:28:28,591 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-21 20:28:28,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 20:28:29,822 WARN L202 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 74 [2021-02-21 20:28:30,524 WARN L202 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 74 [2021-02-21 20:28:31,039 WARN L202 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2021-02-21 20:28:31,455 WARN L202 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2021-02-21 20:28:32,006 WARN L202 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 88 [2021-02-21 20:28:32,012 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-02-21 20:28:32,012 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-02-21 20:28:32,012 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-02-21 20:28:32,012 INFO L192 CegarLoopUtils]: At program point L4-3(line 4) the Hoare annotation is: true [2021-02-21 20:28:32,012 INFO L192 CegarLoopUtils]: At program point L4-4(line 4) the Hoare annotation is: true [2021-02-21 20:28:32,012 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 20:28:32,012 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-21 20:28:32,012 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 4) the Hoare annotation is: true [2021-02-21 20:28:32,013 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-21 20:28:32,013 INFO L192 CegarLoopUtils]: At program point L4(line 4) the Hoare annotation is: true [2021-02-21 20:28:32,013 INFO L192 CegarLoopUtils]: At program point L4-1(line 4) the Hoare annotation is: true [2021-02-21 20:28:32,013 INFO L192 CegarLoopUtils]: At program point L4-2(line 4) the Hoare annotation is: true [2021-02-21 20:28:32,013 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-21 20:28:32,013 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-21 20:28:32,014 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 20:28:32,014 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 20:28:32,014 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-21 20:28:32,014 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) the Hoare annotation is: false [2021-02-21 20:28:32,015 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2021-02-21 20:28:32,015 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 11 17) the Hoare annotation is: (<= 10 main_~input~0) [2021-02-21 20:28:32,015 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: false [2021-02-21 20:28:32,015 INFO L185 CegarLoopUtils]: At program point L14(lines 14 16) the Hoare annotation is: (and (< 9 main_~result~0) (<= main_~result~0 10) (<= 10 main_~input~0)) [2021-02-21 20:28:32,015 INFO L185 CegarLoopUtils]: At program point L15-1(line 15) the Hoare annotation is: false [2021-02-21 20:28:32,015 INFO L185 CegarLoopUtils]: At program point L13(line 13) the Hoare annotation is: (and (<= 10 main_~input~0) (<= main_~input~0 10)) [2021-02-21 20:28:32,015 INFO L185 CegarLoopUtils]: At program point L13-1(line 13) the Hoare annotation is: (and (<= |main_#t~ret8| 10) (<= 10 |main_#t~ret8|) (<= 10 main_~input~0)) [2021-02-21 20:28:32,016 INFO L185 CegarLoopUtils]: At program point L14-2(lines 11 17) the Hoare annotation is: (<= 10 main_~input~0) [2021-02-21 20:28:32,016 INFO L185 CegarLoopUtils]: At program point L13-2(line 13) the Hoare annotation is: (and (<= |main_#t~ret8| 10) (<= 10 |main_#t~ret8|) (<= 10 main_~input~0)) [2021-02-21 20:28:32,016 INFO L185 CegarLoopUtils]: At program point L13-3(line 13) the Hoare annotation is: (and (< 9 main_~result~0) (<= |main_#t~ret8| 10) (<= main_~result~0 10) (<= 10 |main_#t~ret8|) (<= 10 main_~input~0)) [2021-02-21 20:28:32,016 INFO L185 CegarLoopUtils]: At program point idFINAL(lines 6 9) the Hoare annotation is: (and (let ((.cse0 (= |id_#in~x| id_~x))) (or (and .cse0 (<= |id_#in~x| 9)) (and .cse0 (<= 10 |id_#res|) (<= |id_#res| 10)) (and (<= 11 |id_#in~x|) .cse0))) (or (and (<= 7 |id_#res|) (<= |id_#res| 7) (<= 7 |id_#in~x|) (<= |id_#in~x| 7)) (and (<= |id_#res| 3) (<= 3 |id_#in~x|) (<= |id_#in~x| 3) (<= 3 |id_#res|)) (and (<= |id_#res| 8) (<= 8 |id_#in~x|) (<= 8 |id_#res|) (<= |id_#in~x| 8)) (and (<= 9 |id_#res|) (<= |id_#res| 9) (<= 9 |id_#in~x|)) (and (<= 2 |id_#res|) (<= |id_#res| 2) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and (<= |id_#res| 4) (<= 4 |id_#res|) (<= |id_#in~x| 4) (<= 4 |id_#in~x|)) (and (= |id_#res| 0) (= |id_#in~x| 0)) (<= 10 |id_#in~x|) (and (<= |id_#res| 6) (<= 6 |id_#in~x|) (<= 6 |id_#res|) (<= |id_#in~x| 6)) (and (<= 5 |id_#res|) (<= 5 |id_#in~x|) (<= |id_#in~x| 5) (<= |id_#res| 5)) (and (<= 1 |id_#in~x|) (<= |id_#res| 1) (<= 1 |id_#res|) (<= |id_#in~x| 1)))) [2021-02-21 20:28:32,017 INFO L185 CegarLoopUtils]: At program point idEXIT(lines 6 9) the Hoare annotation is: (and (let ((.cse0 (= |id_#in~x| id_~x))) (or (and .cse0 (<= |id_#in~x| 9)) (and .cse0 (<= 10 |id_#res|) (<= |id_#res| 10)) (and (<= 11 |id_#in~x|) .cse0))) (or (and (<= 7 |id_#res|) (<= |id_#res| 7) (<= 7 |id_#in~x|) (<= |id_#in~x| 7)) (and (<= |id_#res| 3) (<= 3 |id_#in~x|) (<= |id_#in~x| 3) (<= 3 |id_#res|)) (and (<= |id_#res| 8) (<= 8 |id_#in~x|) (<= 8 |id_#res|) (<= |id_#in~x| 8)) (and (<= 9 |id_#res|) (<= |id_#res| 9) (<= 9 |id_#in~x|)) (and (<= 2 |id_#res|) (<= |id_#res| 2) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and (<= |id_#res| 4) (<= 4 |id_#res|) (<= |id_#in~x| 4) (<= 4 |id_#in~x|)) (and (= |id_#res| 0) (= |id_#in~x| 0)) (<= 10 |id_#in~x|) (and (<= |id_#res| 6) (<= 6 |id_#in~x|) (<= 6 |id_#res|) (<= |id_#in~x| 6)) (and (<= 5 |id_#res|) (<= 5 |id_#in~x|) (<= |id_#in~x| 5) (<= |id_#res| 5)) (and (<= 1 |id_#in~x|) (<= |id_#res| 1) (<= 1 |id_#res|) (<= |id_#in~x| 1)))) [2021-02-21 20:28:32,017 INFO L185 CegarLoopUtils]: At program point L8(line 8) the Hoare annotation is: (= |id_#in~x| id_~x) [2021-02-21 20:28:32,017 INFO L192 CegarLoopUtils]: At program point idENTRY(lines 6 9) the Hoare annotation is: true [2021-02-21 20:28:32,017 INFO L185 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (= |id_#in~x| id_~x) [2021-02-21 20:28:32,018 INFO L185 CegarLoopUtils]: At program point L8-1(line 8) the Hoare annotation is: (let ((.cse0 (= |id_#in~x| id_~x))) (or (and .cse0 (<= 8 |id_#in~x|) (<= |id_#t~ret7| 7) (<= 7 |id_#t~ret7|) (<= |id_#in~x| 8)) (and (<= |id_#t~ret7| 6) .cse0 (<= 6 |id_#t~ret7|) (<= 7 |id_#in~x|) (<= |id_#in~x| 7)) (and .cse0 (<= 9 |id_#t~ret7|) (<= 10 |id_#in~x|) (<= |id_#t~ret7| 9)) (and (<= 5 |id_#in~x|) (<= |id_#in~x| 5) .cse0 (<= 4 |id_#t~ret7|) (<= |id_#t~ret7| 4)) (and .cse0 (<= |id_#in~x| 4) (<= 3 |id_#t~ret7|) (<= |id_#t~ret7| 3) (<= 4 |id_#in~x|)) (and .cse0 (<= |id_#t~ret7| 1) (<= 1 |id_#t~ret7|) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and .cse0 (<= |id_#in~x| 9) (<= 8 |id_#t~ret7|) (<= |id_#t~ret7| 8) (<= 9 |id_#in~x|)) (and (<= 1 |id_#in~x|) .cse0 (= |id_#t~ret7| 0) (<= |id_#in~x| 1)) (and (<= 3 |id_#in~x|) .cse0 (<= |id_#t~ret7| 2) (<= 2 |id_#t~ret7|) (<= |id_#in~x| 3)) (and (<= 5 |id_#t~ret7|) (<= |id_#t~ret7| 5) .cse0 (<= 6 |id_#in~x|) (<= |id_#in~x| 6)) (and (<= 11 |id_#in~x|) .cse0))) [2021-02-21 20:28:32,018 INFO L185 CegarLoopUtils]: At program point L7-1(line 7) the Hoare annotation is: (and (= |id_#in~x| id_~x) (= |id_#in~x| 0)) [2021-02-21 20:28:32,018 INFO L185 CegarLoopUtils]: At program point L8-2(line 8) the Hoare annotation is: (let ((.cse0 (= |id_#in~x| id_~x))) (or (and .cse0 (<= 8 |id_#in~x|) (<= |id_#t~ret7| 7) (<= 7 |id_#t~ret7|) (<= |id_#in~x| 8)) (and (<= |id_#t~ret7| 6) .cse0 (<= 6 |id_#t~ret7|) (<= 7 |id_#in~x|) (<= |id_#in~x| 7)) (and .cse0 (<= 9 |id_#t~ret7|) (<= 10 |id_#in~x|) (<= |id_#t~ret7| 9)) (and (<= 5 |id_#in~x|) (<= |id_#in~x| 5) .cse0 (<= 4 |id_#t~ret7|) (<= |id_#t~ret7| 4)) (and .cse0 (<= |id_#in~x| 4) (<= 3 |id_#t~ret7|) (<= |id_#t~ret7| 3) (<= 4 |id_#in~x|)) (and .cse0 (<= |id_#t~ret7| 1) (<= 1 |id_#t~ret7|) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and .cse0 (<= |id_#in~x| 9) (<= 8 |id_#t~ret7|) (<= |id_#t~ret7| 8) (<= 9 |id_#in~x|)) (and (<= 1 |id_#in~x|) .cse0 (= |id_#t~ret7| 0) (<= |id_#in~x| 1)) (and (<= 3 |id_#in~x|) .cse0 (<= |id_#t~ret7| 2) (<= 2 |id_#t~ret7|) (<= |id_#in~x| 3)) (and (<= 5 |id_#t~ret7|) (<= |id_#t~ret7| 5) .cse0 (<= 6 |id_#in~x|) (<= |id_#in~x| 6)) (and (<= 11 |id_#in~x|) .cse0))) [2021-02-21 20:28:32,019 INFO L185 CegarLoopUtils]: At program point L8-3(line 8) the Hoare annotation is: (let ((.cse0 (= |id_#in~x| id_~x))) (or (and (<= |id_#res| 3) (<= 3 |id_#in~x|) .cse0 (<= |id_#t~ret7| 2) (<= 2 |id_#t~ret7|) (<= |id_#in~x| 3) (<= 3 |id_#res|)) (and (<= 1 |id_#in~x|) .cse0 (<= |id_#res| 1) (= |id_#t~ret7| 0) (<= 1 |id_#res|) (<= |id_#in~x| 1)) (and .cse0 (<= 9 |id_#t~ret7|) (<= 10 |id_#in~x|) (<= |id_#t~ret7| 9) (<= 10 |id_#res|) (<= |id_#res| 10)) (and (<= |id_#res| 8) .cse0 (<= 8 |id_#in~x|) (<= |id_#t~ret7| 7) (<= 8 |id_#res|) (<= 7 |id_#t~ret7|) (<= |id_#in~x| 8)) (and (<= |id_#t~ret7| 6) (<= 7 |id_#res|) .cse0 (<= |id_#res| 7) (<= 6 |id_#t~ret7|) (<= 7 |id_#in~x|) (<= |id_#in~x| 7)) (and (<= |id_#res| 4) (<= 4 |id_#res|) .cse0 (<= |id_#in~x| 4) (<= 3 |id_#t~ret7|) (<= |id_#t~ret7| 3) (<= 4 |id_#in~x|)) (and (<= 9 |id_#res|) .cse0 (<= |id_#in~x| 9) (<= |id_#res| 9) (<= 8 |id_#t~ret7|) (<= |id_#t~ret7| 8) (<= 9 |id_#in~x|)) (and (<= 2 |id_#res|) .cse0 (<= |id_#t~ret7| 1) (<= |id_#res| 2) (<= 1 |id_#t~ret7|) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and (<= 5 |id_#res|) (<= 5 |id_#in~x|) (<= |id_#in~x| 5) .cse0 (<= |id_#res| 5) (<= 4 |id_#t~ret7|) (<= |id_#t~ret7| 4)) (and (<= 5 |id_#t~ret7|) (<= |id_#res| 6) (<= |id_#t~ret7| 5) .cse0 (<= 6 |id_#in~x|) (<= 6 |id_#res|) (<= |id_#in~x| 6)) (and (<= 11 |id_#in~x|) .cse0))) [2021-02-21 20:28:32,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:28:32 BoogieIcfgContainer [2021-02-21 20:28:32,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:28:32,041 INFO L168 Benchmark]: Toolchain (without parser) took 19407.97 ms. Allocated memory was 158.3 MB in the beginning and 367.0 MB in the end (delta: 208.7 MB). Free memory was 135.6 MB in the beginning and 251.6 MB in the end (delta: -115.9 MB). Peak memory consumption was 219.6 MB. Max. memory is 8.0 GB. [2021-02-21 20:28:32,042 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 158.3 MB. Free memory was 132.1 MB in the beginning and 131.9 MB in the end (delta: 215.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:28:32,042 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.88 ms. Allocated memory is still 158.3 MB. Free memory was 134.7 MB in the beginning and 125.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 20:28:32,042 INFO L168 Benchmark]: Boogie Preprocessor took 48.89 ms. Allocated memory is still 158.3 MB. Free memory was 125.4 MB in the beginning and 124.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:28:32,043 INFO L168 Benchmark]: RCFGBuilder took 708.10 ms. Allocated memory is still 158.3 MB. Free memory was 124.2 MB in the beginning and 111.0 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-21 20:28:32,043 INFO L168 Benchmark]: TraceAbstraction took 18350.02 ms. Allocated memory was 158.3 MB in the beginning and 367.0 MB in the end (delta: 208.7 MB). Free memory was 110.5 MB in the beginning and 251.6 MB in the end (delta: -141.0 MB). Peak memory consumption was 194.5 MB. Max. memory is 8.0 GB. [2021-02-21 20:28:32,044 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 158.3 MB. Free memory was 132.1 MB in the beginning and 131.9 MB in the end (delta: 215.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 270.88 ms. Allocated memory is still 158.3 MB. Free memory was 134.7 MB in the beginning and 125.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.89 ms. Allocated memory is still 158.3 MB. Free memory was 125.4 MB in the beginning and 124.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 708.10 ms. Allocated memory is still 158.3 MB. Free memory was 124.2 MB in the beginning and 111.0 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18350.02 ms. Allocated memory was 158.3 MB in the beginning and 367.0 MB in the end (delta: 208.7 MB). Free memory was 110.5 MB in the beginning and 251.6 MB in the end (delta: -141.0 MB). Peak memory consumption was 194.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 10 <= input - ProcedureContractResult [Line: 6]: Procedure Contract for id Derived contract for procedure id: (((\old(x) == x && \old(x) <= 9) || ((\old(x) == x && 10 <= \result) && \result <= 10)) || (11 <= \old(x) && \old(x) == x)) && (((((((((((((7 <= \result && \result <= 7) && 7 <= \old(x)) && \old(x) <= 7) || (((\result <= 3 && 3 <= \old(x)) && \old(x) <= 3) && 3 <= \result)) || (((\result <= 8 && 8 <= \old(x)) && 8 <= \result) && \old(x) <= 8)) || ((9 <= \result && \result <= 9) && 9 <= \old(x))) || (((2 <= \result && \result <= 2) && 2 <= \old(x)) && \old(x) <= 2)) || (((\result <= 4 && 4 <= \result) && \old(x) <= 4) && 4 <= \old(x))) || (\result == 0 && \old(x) == 0)) || 10 <= \old(x)) || (((\result <= 6 && 6 <= \old(x)) && 6 <= \result) && \old(x) <= 6)) || (((5 <= \result && 5 <= \old(x)) && \old(x) <= 5) && \result <= 5)) || (((1 <= \old(x) && \result <= 1) && 1 <= \result) && \old(x) <= 1)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.7s, OverallIterations: 12, TraceHistogramMax: 12, AutomataDifference: 8.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 369 SDtfs, 741 SDslu, 928 SDs, 0 SdLazy, 2489 SolverSat, 211 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 428 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 34 LocationsWithAnnotation, 43 PreInvPairs, 252 NumberOfFragments, 969 HoareAnnotationTreeSize, 43 FomulaSimplifications, 4396 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 34 FomulaSimplificationsInter, 4262 FormulaSimplificationTreeSizeReductionInter, 2.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...