/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/fibo_2calls_5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:53:27,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:53:27,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:53:27,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 17:53:27,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 17:53:27,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 17:53:27,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 17:53:27,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 17:53:27,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 17:53:27,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 17:53:27,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 17:53:27,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 17:53:27,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:53:27,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:53:27,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:53:27,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:53:27,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:53:27,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:53:27,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:53:27,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:53:27,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:53:27,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:53:27,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:53:27,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:53:27,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 17:53:27,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:53:27,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:53:27,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:53:27,890 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 17:53:27,918 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:53:27,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:53:27,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:53:27,924 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:53:27,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:53:27,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:53:27,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:53:27,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:53:27,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:53:27,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:53:27,927 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:53:27,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:53:27,928 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:53:27,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:53:27,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:53:27,929 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:53:27,929 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:53:27,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:53:27,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:53:27,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:53:27,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:53:27,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:53:27,930 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:53:28,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:53:28,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:53:28,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:53:28,385 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:53:28,386 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:53:28,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c [2021-02-23 17:53:28,511 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2866a5db6/916eaddc3fe04e8b9daf7e4e5261773f/FLAG8d72ffb92 [2021-02-23 17:53:29,262 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:53:29,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c [2021-02-23 17:53:29,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2866a5db6/916eaddc3fe04e8b9daf7e4e5261773f/FLAG8d72ffb92 [2021-02-23 17:53:29,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2866a5db6/916eaddc3fe04e8b9daf7e4e5261773f [2021-02-23 17:53:29,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:53:29,615 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:53:29,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:53:29,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:53:29,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:53:29,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:53:29" (1/1) ... [2021-02-23 17:53:29,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@508f2108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:53:29, skipping insertion in model container [2021-02-23 17:53:29,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:53:29" (1/1) ... [2021-02-23 17:53:29,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:53:29,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:53:29,816 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/fibo_2calls_5-1.c[946,959] [2021-02-23 17:53:29,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:53:29,834 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:53:29,855 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/fibo_2calls_5-1.c[946,959] [2021-02-23 17:53:29,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:53:29,876 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:53:29,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:53:29 WrapperNode [2021-02-23 17:53:29,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:53:29,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:53:29,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:53:29,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:53:29,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:53:29" (1/1) ... [2021-02-23 17:53:29,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:53:29" (1/1) ... [2021-02-23 17:53:29,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:53:29" (1/1) ... [2021-02-23 17:53:29,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:53:29" (1/1) ... [2021-02-23 17:53:29,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:53:29" (1/1) ... [2021-02-23 17:53:29,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:53:29" (1/1) ... [2021-02-23 17:53:29,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:53:29" (1/1) ... [2021-02-23 17:53:29,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:53:29,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:53:29,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:53:29,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:53:29,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:53:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:53:30,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:53:30,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:53:30,056 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:53:30,057 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2021-02-23 17:53:30,057 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2021-02-23 17:53:30,058 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:53:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 17:53:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:53:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:53:30,060 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:53:30,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:53:30,061 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2021-02-23 17:53:30,061 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2021-02-23 17:53:30,061 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:53:30,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:53:30,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:53:30,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:53:30,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:53:30,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:53:30,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:53:30,540 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:53:30,541 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 17:53:30,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:53:30 BoogieIcfgContainer [2021-02-23 17:53:30,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:53:30,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:53:30,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:53:30,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:53:30,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:53:29" (1/3) ... [2021-02-23 17:53:30,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dbdaf3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:53:30, skipping insertion in model container [2021-02-23 17:53:30,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:53:29" (2/3) ... [2021-02-23 17:53:30,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dbdaf3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:53:30, skipping insertion in model container [2021-02-23 17:53:30,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:53:30" (3/3) ... [2021-02-23 17:53:30,572 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-1.c [2021-02-23 17:53:30,590 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:53:30,601 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:53:30,646 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:53:30,673 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:53:30,674 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:53:30,674 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:53:30,674 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:53:30,674 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:53:30,674 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:53:30,675 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:53:30,675 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:53:30,695 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2021-02-23 17:53:30,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-23 17:53:30,708 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:30,709 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] [2021-02-23 17:53:30,709 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:30,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:30,718 INFO L82 PathProgramCache]: Analyzing trace with hash 2042570277, now seen corresponding path program 1 times [2021-02-23 17:53:30,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:30,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340812258] [2021-02-23 17:53:30,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:30,823 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:31,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:31,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:31,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:31,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:31,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:31,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:31,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:31,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:31,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:31,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:31,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:31,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:31,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:31,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:31,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:53:31,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340812258] [2021-02-23 17:53:31,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:31,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 17:53:31,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366040574] [2021-02-23 17:53:31,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 17:53:31,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:31,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 17:53:31,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 17:53:31,281 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 6 states. [2021-02-23 17:53:31,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:31,992 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2021-02-23 17:53:31,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 17:53:31,994 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-02-23 17:53:31,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:32,006 INFO L225 Difference]: With dead ends: 67 [2021-02-23 17:53:32,006 INFO L226 Difference]: Without dead ends: 50 [2021-02-23 17:53:32,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-23 17:53:32,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-02-23 17:53:32,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-02-23 17:53:32,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-02-23 17:53:32,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2021-02-23 17:53:32,084 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 24 [2021-02-23 17:53:32,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:32,085 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2021-02-23 17:53:32,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 17:53:32,086 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2021-02-23 17:53:32,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-23 17:53:32,088 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:32,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:53:32,089 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:53:32,090 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:32,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:32,092 INFO L82 PathProgramCache]: Analyzing trace with hash -589714176, now seen corresponding path program 1 times [2021-02-23 17:53:32,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:32,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935284148] [2021-02-23 17:53:32,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:32,102 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:32,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:32,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:32,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:32,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:32,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:32,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:32,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:32,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:32,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:32,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:32,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:32,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:32,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:32,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:32,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:53:32,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935284148] [2021-02-23 17:53:32,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:32,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 17:53:32,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807234] [2021-02-23 17:53:32,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 17:53:32,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:32,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 17:53:32,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 17:53:32,227 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 6 states. [2021-02-23 17:53:32,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:32,640 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2021-02-23 17:53:32,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 17:53:32,642 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2021-02-23 17:53:32,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:32,646 INFO L225 Difference]: With dead ends: 58 [2021-02-23 17:53:32,647 INFO L226 Difference]: Without dead ends: 52 [2021-02-23 17:53:32,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-23 17:53:32,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-23 17:53:32,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2021-02-23 17:53:32,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-02-23 17:53:32,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2021-02-23 17:53:32,691 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 25 [2021-02-23 17:53:32,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:32,692 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2021-02-23 17:53:32,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 17:53:32,692 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2021-02-23 17:53:32,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-23 17:53:32,697 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:32,698 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:53:32,698 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:53:32,700 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:32,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:32,701 INFO L82 PathProgramCache]: Analyzing trace with hash -374229603, now seen corresponding path program 1 times [2021-02-23 17:53:32,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:32,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078870013] [2021-02-23 17:53:32,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:32,706 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:32,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:32,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:32,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:32,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:32,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:32,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:32,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:32,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:32,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:32,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:32,858 WARN L141 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size [2021-02-23 17:53:32,859 WARN L147 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size 3 [2021-02-23 17:53:32,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:32,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:53:32,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:32,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:32,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:32,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:32,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:32,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:32,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:32,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:32,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:32,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-02-23 17:53:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:32,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:32,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:32,938 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-23 17:53:32,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078870013] [2021-02-23 17:53:32,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:32,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 17:53:32,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452442746] [2021-02-23 17:53:32,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 17:53:32,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:32,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 17:53:32,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-23 17:53:32,941 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 7 states. [2021-02-23 17:53:33,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:33,370 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2021-02-23 17:53:33,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 17:53:33,371 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2021-02-23 17:53:33,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:33,373 INFO L225 Difference]: With dead ends: 90 [2021-02-23 17:53:33,374 INFO L226 Difference]: Without dead ends: 54 [2021-02-23 17:53:33,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-02-23 17:53:33,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-02-23 17:53:33,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2021-02-23 17:53:33,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-02-23 17:53:33,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2021-02-23 17:53:33,396 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 41 [2021-02-23 17:53:33,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:33,396 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2021-02-23 17:53:33,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 17:53:33,397 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2021-02-23 17:53:33,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-23 17:53:33,399 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:33,399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:53:33,400 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 17:53:33,400 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:33,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:33,401 INFO L82 PathProgramCache]: Analyzing trace with hash -245289899, now seen corresponding path program 1 times [2021-02-23 17:53:33,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:33,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012111898] [2021-02-23 17:53:33,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:33,405 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:33,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:33,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:33,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:33,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:33,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:33,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:33,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:33,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:33,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:33,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:33,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:33,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:33,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:33,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:33,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:33,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:33,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:33,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:33,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:33,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:33,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:33,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:33,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:33,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:33,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:33,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-23 17:53:33,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012111898] [2021-02-23 17:53:33,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:33,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 17:53:33,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691070192] [2021-02-23 17:53:33,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 17:53:33,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:33,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 17:53:33,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-23 17:53:33,689 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 9 states. [2021-02-23 17:53:34,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:34,347 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2021-02-23 17:53:34,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 17:53:34,348 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2021-02-23 17:53:34,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:34,351 INFO L225 Difference]: With dead ends: 82 [2021-02-23 17:53:34,351 INFO L226 Difference]: Without dead ends: 76 [2021-02-23 17:53:34,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-02-23 17:53:34,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-02-23 17:53:34,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2021-02-23 17:53:34,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-02-23 17:53:34,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2021-02-23 17:53:34,382 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 42 [2021-02-23 17:53:34,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:34,383 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2021-02-23 17:53:34,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 17:53:34,383 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2021-02-23 17:53:34,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-23 17:53:34,386 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:34,386 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:53:34,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 17:53:34,387 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:34,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:34,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1853062104, now seen corresponding path program 1 times [2021-02-23 17:53:34,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:34,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105250554] [2021-02-23 17:53:34,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:34,391 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:34,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:34,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:34,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:34,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:34,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:34,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:34,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:34,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:34,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:34,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:34,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:34,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:34,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:34,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:34,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:34,551 WARN L141 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size [2021-02-23 17:53:34,551 WARN L147 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size 3 [2021-02-23 17:53:34,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:34,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:53:34,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:34,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:34,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:34,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:34,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:34,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:34,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:34,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:34,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:34,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-02-23 17:53:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:34,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:34,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:34,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-23 17:53:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:34,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:34,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:34,614 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-02-23 17:53:34,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105250554] [2021-02-23 17:53:34,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:34,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 17:53:34,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641671161] [2021-02-23 17:53:34,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 17:53:34,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:34,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 17:53:34,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-23 17:53:34,617 INFO L87 Difference]: Start difference. First operand 74 states and 91 transitions. Second operand 7 states. [2021-02-23 17:53:34,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:34,949 INFO L93 Difference]: Finished difference Result 138 states and 186 transitions. [2021-02-23 17:53:34,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 17:53:34,950 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2021-02-23 17:53:34,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:34,953 INFO L225 Difference]: With dead ends: 138 [2021-02-23 17:53:34,953 INFO L226 Difference]: Without dead ends: 78 [2021-02-23 17:53:34,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-02-23 17:53:34,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-02-23 17:53:34,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-02-23 17:53:34,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-23 17:53:34,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 97 transitions. [2021-02-23 17:53:34,979 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 97 transitions. Word has length 58 [2021-02-23 17:53:34,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:34,980 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 97 transitions. [2021-02-23 17:53:34,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 17:53:34,980 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 97 transitions. [2021-02-23 17:53:34,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-02-23 17:53:34,983 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:34,983 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:53:34,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 17:53:34,984 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:34,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:34,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1662933173, now seen corresponding path program 1 times [2021-02-23 17:53:34,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:34,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987281620] [2021-02-23 17:53:34,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:34,987 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:35,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:35,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:35,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:35,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:35,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:35,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:35,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:35,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:35,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:35,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:35,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:35,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:35,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:35,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:35,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:35,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:35,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:35,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:35,114 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-23 17:53:35,115 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-23 17:53:35,125 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-23 17:53:35,126 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-23 17:53:35,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:35,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:35,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:35,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:35,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:35,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:35,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:35,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:35,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:35,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:35,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:35,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:35,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:35,221 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-02-23 17:53:35,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987281620] [2021-02-23 17:53:35,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:35,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 17:53:35,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429562622] [2021-02-23 17:53:35,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 17:53:35,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:35,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 17:53:35,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-02-23 17:53:35,224 INFO L87 Difference]: Start difference. First operand 78 states and 97 transitions. Second operand 9 states. [2021-02-23 17:53:35,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:35,697 INFO L93 Difference]: Finished difference Result 150 states and 205 transitions. [2021-02-23 17:53:35,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-23 17:53:35,698 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2021-02-23 17:53:35,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:35,701 INFO L225 Difference]: With dead ends: 150 [2021-02-23 17:53:35,701 INFO L226 Difference]: Without dead ends: 86 [2021-02-23 17:53:35,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-02-23 17:53:35,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-02-23 17:53:35,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2021-02-23 17:53:35,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-02-23 17:53:35,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2021-02-23 17:53:35,729 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 59 [2021-02-23 17:53:35,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:35,729 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2021-02-23 17:53:35,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 17:53:35,729 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2021-02-23 17:53:35,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-02-23 17:53:35,732 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:35,732 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:53:35,733 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 17:53:35,733 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:35,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:35,734 INFO L82 PathProgramCache]: Analyzing trace with hash -702082707, now seen corresponding path program 1 times [2021-02-23 17:53:35,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:35,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573760932] [2021-02-23 17:53:35,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:35,736 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:35,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:35,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:35,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:35,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:35,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:35,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:35,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:35,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:35,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:35,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:35,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:35,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:35,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:35,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:35,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:35,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:35,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:35,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:35,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:35,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:35,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:35,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:35,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:35,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:35,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:35,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:35,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:35,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:35,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:35,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:35,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:35,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:35,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:35,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:35,942 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-02-23 17:53:35,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573760932] [2021-02-23 17:53:35,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:35,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 17:53:35,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330523465] [2021-02-23 17:53:35,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 17:53:35,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:35,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 17:53:35,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-02-23 17:53:35,945 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand 11 states. [2021-02-23 17:53:36,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:36,690 INFO L93 Difference]: Finished difference Result 126 states and 166 transitions. [2021-02-23 17:53:36,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 17:53:36,691 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2021-02-23 17:53:36,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:36,694 INFO L225 Difference]: With dead ends: 126 [2021-02-23 17:53:36,694 INFO L226 Difference]: Without dead ends: 120 [2021-02-23 17:53:36,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-02-23 17:53:36,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-02-23 17:53:36,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 114. [2021-02-23 17:53:36,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2021-02-23 17:53:36,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 153 transitions. [2021-02-23 17:53:36,731 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 153 transitions. Word has length 60 [2021-02-23 17:53:36,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:36,732 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 153 transitions. [2021-02-23 17:53:36,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 17:53:36,732 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 153 transitions. [2021-02-23 17:53:36,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-02-23 17:53:36,735 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:36,735 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:53:36,735 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 17:53:36,735 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:36,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:36,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1046643654, now seen corresponding path program 1 times [2021-02-23 17:53:36,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:36,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380018263] [2021-02-23 17:53:36,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:36,739 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:36,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:36,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:36,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:36,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:36,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:36,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:36,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:36,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:36,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:36,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:36,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:36,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:36,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:36,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:36,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:36,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:36,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:36,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:36,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:36,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:36,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:36,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:36,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:36,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:36,941 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-23 17:53:36,942 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-23 17:53:36,953 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-23 17:53:36,954 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-23 17:53:36,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:36,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:36,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:36,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:36,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:36,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:37,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:37,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:37,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:37,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:37,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:37,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:37,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:37,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-02-23 17:53:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:37,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:37,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:37,051 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-02-23 17:53:37,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380018263] [2021-02-23 17:53:37,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:37,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 17:53:37,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310672820] [2021-02-23 17:53:37,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 17:53:37,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:37,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 17:53:37,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-02-23 17:53:37,055 INFO L87 Difference]: Start difference. First operand 114 states and 153 transitions. Second operand 10 states. [2021-02-23 17:53:37,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:37,567 INFO L93 Difference]: Finished difference Result 235 states and 356 transitions. [2021-02-23 17:53:37,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 17:53:37,568 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2021-02-23 17:53:37,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:37,571 INFO L225 Difference]: With dead ends: 235 [2021-02-23 17:53:37,571 INFO L226 Difference]: Without dead ends: 135 [2021-02-23 17:53:37,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-02-23 17:53:37,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-02-23 17:53:37,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 123. [2021-02-23 17:53:37,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2021-02-23 17:53:37,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 169 transitions. [2021-02-23 17:53:37,607 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 169 transitions. Word has length 77 [2021-02-23 17:53:37,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:37,607 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 169 transitions. [2021-02-23 17:53:37,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 17:53:37,608 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 169 transitions. [2021-02-23 17:53:37,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-02-23 17:53:37,610 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:37,610 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:53:37,610 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 17:53:37,611 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:37,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:37,611 INFO L82 PathProgramCache]: Analyzing trace with hash 549553181, now seen corresponding path program 1 times [2021-02-23 17:53:37,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:37,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320223122] [2021-02-23 17:53:37,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:37,614 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:37,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:37,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:37,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:37,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:37,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:37,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:37,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:37,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:37,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:37,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:37,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:37,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:37,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:37,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:37,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:37,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:37,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:37,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:37,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:37,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:37,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:37,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:37,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:37,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:37,761 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-23 17:53:37,762 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-23 17:53:37,777 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-23 17:53:37,778 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-23 17:53:37,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:37,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:37,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:37,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:37,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:37,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:37,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:37,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:37,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:37,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:37,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:37,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:53:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:37,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:37,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:37,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:37,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:37,892 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-02-23 17:53:37,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320223122] [2021-02-23 17:53:37,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:37,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 17:53:37,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047079410] [2021-02-23 17:53:37,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 17:53:37,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:37,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 17:53:37,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-02-23 17:53:37,894 INFO L87 Difference]: Start difference. First operand 123 states and 169 transitions. Second operand 12 states. [2021-02-23 17:53:38,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:38,582 INFO L93 Difference]: Finished difference Result 265 states and 408 transitions. [2021-02-23 17:53:38,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 17:53:38,582 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2021-02-23 17:53:38,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:38,585 INFO L225 Difference]: With dead ends: 265 [2021-02-23 17:53:38,586 INFO L226 Difference]: Without dead ends: 159 [2021-02-23 17:53:38,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-02-23 17:53:38,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-02-23 17:53:38,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 141. [2021-02-23 17:53:38,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2021-02-23 17:53:38,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 199 transitions. [2021-02-23 17:53:38,629 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 199 transitions. Word has length 78 [2021-02-23 17:53:38,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:38,630 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 199 transitions. [2021-02-23 17:53:38,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 17:53:38,630 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 199 transitions. [2021-02-23 17:53:38,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-02-23 17:53:38,633 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:38,634 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:53:38,634 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 17:53:38,634 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:38,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:38,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1728392861, now seen corresponding path program 2 times [2021-02-23 17:53:38,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:38,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797413921] [2021-02-23 17:53:38,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:38,638 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:38,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:38,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:38,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:38,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:38,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:38,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:38,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:38,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:38,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:38,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:38,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:38,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:38,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:38,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:38,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:38,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:38,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:38,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:38,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:38,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:38,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:38,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:38,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:38,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:38,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:38,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:38,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:38,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:38,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:38,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:38,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:38,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:38,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:38,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:38,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:38,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:38,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:38,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:38,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:38,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:38,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:38,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:53:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:38,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:38,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:38,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:38,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:38,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:38,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:38,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:38,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:38,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:38,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:38,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:38,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:38,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:38,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:39,016 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-02-23 17:53:39,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797413921] [2021-02-23 17:53:39,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:39,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-23 17:53:39,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473445895] [2021-02-23 17:53:39,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 17:53:39,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:39,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 17:53:39,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-02-23 17:53:39,019 INFO L87 Difference]: Start difference. First operand 141 states and 199 transitions. Second operand 13 states. [2021-02-23 17:53:39,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:39,871 INFO L93 Difference]: Finished difference Result 221 states and 323 transitions. [2021-02-23 17:53:39,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-23 17:53:39,871 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 113 [2021-02-23 17:53:39,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:39,877 INFO L225 Difference]: With dead ends: 221 [2021-02-23 17:53:39,877 INFO L226 Difference]: Without dead ends: 215 [2021-02-23 17:53:39,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2021-02-23 17:53:39,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-02-23 17:53:39,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 209. [2021-02-23 17:53:39,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2021-02-23 17:53:39,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 310 transitions. [2021-02-23 17:53:39,926 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 310 transitions. Word has length 113 [2021-02-23 17:53:39,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:39,926 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 310 transitions. [2021-02-23 17:53:39,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 17:53:39,927 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 310 transitions. [2021-02-23 17:53:39,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-02-23 17:53:39,931 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:39,932 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:53:39,932 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 17:53:39,932 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:39,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:39,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1860651107, now seen corresponding path program 2 times [2021-02-23 17:53:39,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:39,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941654940] [2021-02-23 17:53:39,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:39,936 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:39,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:39,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:39,983 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:39,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:39,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:39,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:40,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:40,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:40,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:40,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:40,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:40,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:40,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:40,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:40,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:40,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:40,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:40,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:40,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:40,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:40,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:40,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:40,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:40,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:40,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:40,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:40,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:40,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:40,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:40,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:40,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:40,151 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-23 17:53:40,152 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-23 17:53:40,170 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-23 17:53:40,171 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-23 17:53:40,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:40,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:40,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:40,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:40,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:40,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:40,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:40,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:40,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:40,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:40,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:40,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:53:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:40,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:40,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:40,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:40,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:40,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-23 17:53:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:40,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:40,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:40,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:40,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:40,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:40,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:40,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:40,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:40,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:40,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:40,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:40,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:40,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:40,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:40,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:40,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:40,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:40,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:53:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:40,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:40,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:40,408 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 9 proven. 51 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-02-23 17:53:40,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941654940] [2021-02-23 17:53:40,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:40,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-23 17:53:40,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038681023] [2021-02-23 17:53:40,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 17:53:40,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:40,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 17:53:40,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-02-23 17:53:40,411 INFO L87 Difference]: Start difference. First operand 209 states and 310 transitions. Second operand 13 states. [2021-02-23 17:53:41,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:41,213 INFO L93 Difference]: Finished difference Result 457 states and 782 transitions. [2021-02-23 17:53:41,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-23 17:53:41,214 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 149 [2021-02-23 17:53:41,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:41,220 INFO L225 Difference]: With dead ends: 457 [2021-02-23 17:53:41,220 INFO L226 Difference]: Without dead ends: 265 [2021-02-23 17:53:41,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2021-02-23 17:53:41,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-02-23 17:53:41,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 235. [2021-02-23 17:53:41,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2021-02-23 17:53:41,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 363 transitions. [2021-02-23 17:53:41,284 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 363 transitions. Word has length 149 [2021-02-23 17:53:41,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:41,284 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 363 transitions. [2021-02-23 17:53:41,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 17:53:41,284 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 363 transitions. [2021-02-23 17:53:41,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-02-23 17:53:41,291 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:41,291 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-02-23 17:53:41,292 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 17:53:41,292 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:41,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:41,292 INFO L82 PathProgramCache]: Analyzing trace with hash 410292893, now seen corresponding path program 3 times [2021-02-23 17:53:41,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:41,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049534632] [2021-02-23 17:53:41,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:41,296 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:41,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:41,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:41,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:41,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:41,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:41,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:41,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:41,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:41,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:41,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:41,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:41,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:41,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:41,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:41,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:41,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:41,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:41,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:41,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:41,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:41,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:41,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:41,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:41,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:41,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:41,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:41,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:41,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:41,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:41,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:53:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:41,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:41,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:41,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:41,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:41,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:41,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:41,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:41,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 17:53:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:41,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:41,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:41,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:41,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:41,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:41,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:41,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:41,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:41,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:41,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:41,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 17:53:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:41,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:41,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:41,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:41,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:41,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:41,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:41,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:41,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,807 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:41,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:41,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:41,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:41,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:41,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:41,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 17:53:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:41,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:41,865 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-23 17:53:41,866 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-23 17:53:41,911 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-23 17:53:41,912 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-23 17:53:41,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:41,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:41,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:41,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:41,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:41,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:41,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:41,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:41,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:41,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:41,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:42,076 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 18 proven. 56 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-02-23 17:53:42,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049534632] [2021-02-23 17:53:42,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:42,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-02-23 17:53:42,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950343312] [2021-02-23 17:53:42,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-23 17:53:42,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:42,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-23 17:53:42,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2021-02-23 17:53:42,079 INFO L87 Difference]: Start difference. First operand 235 states and 363 transitions. Second operand 21 states. [2021-02-23 17:53:44,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:44,055 INFO L93 Difference]: Finished difference Result 429 states and 722 transitions. [2021-02-23 17:53:44,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-23 17:53:44,056 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 240 [2021-02-23 17:53:44,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:44,060 INFO L225 Difference]: With dead ends: 429 [2021-02-23 17:53:44,060 INFO L226 Difference]: Without dead ends: 204 [2021-02-23 17:53:44,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=315, Invalid=1665, Unknown=0, NotChecked=0, Total=1980 [2021-02-23 17:53:44,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-02-23 17:53:44,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 179. [2021-02-23 17:53:44,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2021-02-23 17:53:44,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 234 transitions. [2021-02-23 17:53:44,107 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 234 transitions. Word has length 240 [2021-02-23 17:53:44,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:44,107 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 234 transitions. [2021-02-23 17:53:44,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-02-23 17:53:44,108 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 234 transitions. [2021-02-23 17:53:44,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-02-23 17:53:44,110 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:44,110 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:53:44,110 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-23 17:53:44,111 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:44,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:44,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1315805160, now seen corresponding path program 4 times [2021-02-23 17:53:44,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:44,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609060119] [2021-02-23 17:53:44,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:44,114 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:44,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:44,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:44,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:44,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:44,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:44,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:44,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:44,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:44,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:44,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:44,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:44,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:44,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:44,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:44,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:44,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:44,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:44,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:44,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:44,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:44,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:44,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:44,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:44,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:44,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:44,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:44,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:44,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:44,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:44,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:44,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:44,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:44,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:44,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:44,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:44,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:44,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:53:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:44,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:44,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:44,305 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-23 17:53:44,306 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-23 17:53:44,319 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-23 17:53:44,320 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-23 17:53:44,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:44,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:44,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:44,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:44,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:44,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:44,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:44,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:44,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-02-23 17:53:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:44,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:44,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:44,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:44,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:44,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:44,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:44,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:44,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:44,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:44,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:44,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:44,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:44,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:44,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:44,485 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-02-23 17:53:44,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609060119] [2021-02-23 17:53:44,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:44,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 17:53:44,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127169085] [2021-02-23 17:53:44,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 17:53:44,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:44,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 17:53:44,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-02-23 17:53:44,488 INFO L87 Difference]: Start difference. First operand 179 states and 234 transitions. Second operand 14 states. [2021-02-23 17:53:45,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:45,380 INFO L93 Difference]: Finished difference Result 348 states and 474 transitions. [2021-02-23 17:53:45,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 17:53:45,381 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 131 [2021-02-23 17:53:45,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:45,385 INFO L225 Difference]: With dead ends: 348 [2021-02-23 17:53:45,385 INFO L226 Difference]: Without dead ends: 190 [2021-02-23 17:53:45,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2021-02-23 17:53:45,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-02-23 17:53:45,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2021-02-23 17:53:45,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2021-02-23 17:53:45,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 249 transitions. [2021-02-23 17:53:45,428 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 249 transitions. Word has length 131 [2021-02-23 17:53:45,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:45,429 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 249 transitions. [2021-02-23 17:53:45,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 17:53:45,429 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 249 transitions. [2021-02-23 17:53:45,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-02-23 17:53:45,432 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:45,432 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-02-23 17:53:45,433 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-23 17:53:45,433 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:45,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:45,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1825236008, now seen corresponding path program 1 times [2021-02-23 17:53:45,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:45,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101855196] [2021-02-23 17:53:45,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:45,437 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:45,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:45,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:45,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:45,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:45,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:45,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:45,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:45,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:45,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:45,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:45,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:45,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:45,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:45,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:45,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:45,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:45,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:45,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:45,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:45,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:45,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:45,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:45,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,684 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:45,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:45,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:45,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:45,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:45,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:53:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:45,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:45,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:45,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:45,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:45,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:45,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:45,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:45,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:45,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:45,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:45,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-02-23 17:53:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:45,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:45,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:45,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:45,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:45,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:45,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:45,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:45,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:45,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:45,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:45,845 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-02-23 17:53:45,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101855196] [2021-02-23 17:53:45,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:45,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-23 17:53:45,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812912519] [2021-02-23 17:53:45,846 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 17:53:45,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:45,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 17:53:45,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-02-23 17:53:45,847 INFO L87 Difference]: Start difference. First operand 190 states and 249 transitions. Second operand 16 states. [2021-02-23 17:53:47,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:47,080 INFO L93 Difference]: Finished difference Result 359 states and 492 transitions. [2021-02-23 17:53:47,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 17:53:47,081 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 149 [2021-02-23 17:53:47,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:47,086 INFO L225 Difference]: With dead ends: 359 [2021-02-23 17:53:47,086 INFO L226 Difference]: Without dead ends: 190 [2021-02-23 17:53:47,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2021-02-23 17:53:47,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-02-23 17:53:47,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 184. [2021-02-23 17:53:47,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2021-02-23 17:53:47,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 239 transitions. [2021-02-23 17:53:47,129 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 239 transitions. Word has length 149 [2021-02-23 17:53:47,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:47,129 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 239 transitions. [2021-02-23 17:53:47,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 17:53:47,130 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 239 transitions. [2021-02-23 17:53:47,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 17:53:47,132 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:47,132 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:53:47,135 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-23 17:53:47,135 INFO L428 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:47,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:47,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1835265144, now seen corresponding path program 2 times [2021-02-23 17:53:47,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:47,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802813100] [2021-02-23 17:53:47,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:47,141 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:47,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:47,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:47,203 WARN L141 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-02-23 17:53:47,204 WARN L147 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size 7 [2021-02-23 17:53:47,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:47,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:47,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:47,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:47,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:47,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:47,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:53:47,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:47,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:47,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:47,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:47,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:53:47,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:47,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:47,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:47,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:47,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:53:47,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:47,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:47,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:47,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:47,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:53:47,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:47,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:47,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:47,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:47,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:47,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:47,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:47,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:47,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:47,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:47,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:53:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:47,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:47,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:47,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:53:47,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:47,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:47,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:47,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:47,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:47,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:47,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:47,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-02-23 17:53:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:47,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:47,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:47,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:53:47,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:47,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:47,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:47,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:47,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 17:53:47,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:47,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:47,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:47,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:47,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:47,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:47,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:47,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:47,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:47,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:47,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:47,940 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-02-23 17:53:47,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802813100] [2021-02-23 17:53:47,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:47,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-02-23 17:53:47,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260992878] [2021-02-23 17:53:47,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-23 17:53:47,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:47,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-23 17:53:47,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2021-02-23 17:53:47,943 INFO L87 Difference]: Start difference. First operand 184 states and 239 transitions. Second operand 23 states. [2021-02-23 17:53:50,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:50,804 INFO L93 Difference]: Finished difference Result 207 states and 268 transitions. [2021-02-23 17:53:50,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-02-23 17:53:50,805 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 148 [2021-02-23 17:53:50,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:50,808 INFO L225 Difference]: With dead ends: 207 [2021-02-23 17:53:50,808 INFO L226 Difference]: Without dead ends: 201 [2021-02-23 17:53:50,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=196, Invalid=2254, Unknown=0, NotChecked=0, Total=2450 [2021-02-23 17:53:50,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-02-23 17:53:50,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 192. [2021-02-23 17:53:50,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2021-02-23 17:53:50,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 251 transitions. [2021-02-23 17:53:50,872 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 251 transitions. Word has length 148 [2021-02-23 17:53:50,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:50,872 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 251 transitions. [2021-02-23 17:53:50,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-02-23 17:53:50,872 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 251 transitions. [2021-02-23 17:53:50,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-02-23 17:53:50,878 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:50,879 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 14, 12, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:53:50,879 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-23 17:53:50,879 INFO L428 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:50,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:50,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1975618455, now seen corresponding path program 3 times [2021-02-23 17:53:50,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:50,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180628630] [2021-02-23 17:53:50,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:50,883 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:50,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:50,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:50,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:50,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:50,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:50,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:50,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:50,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:50,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:50,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:51,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:51,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:51,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:51,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:51,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:51,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:51,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:51,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:51,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:53:51,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:51,215 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-23 17:53:51,216 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-23 17:53:51,230 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-23 17:53:51,231 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-23 17:53:51,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:51,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-02-23 17:53:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:53:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-02-23 17:53:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:53:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-02-23 17:53:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:51,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:51,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:51,622 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2021-02-23 17:53:51,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180628630] [2021-02-23 17:53:51,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:51,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 17:53:51,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760149954] [2021-02-23 17:53:51,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 17:53:51,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:51,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 17:53:51,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-02-23 17:53:51,625 INFO L87 Difference]: Start difference. First operand 192 states and 251 transitions. Second operand 14 states. [2021-02-23 17:53:52,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:52,538 INFO L93 Difference]: Finished difference Result 216 states and 279 transitions. [2021-02-23 17:53:52,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 17:53:52,538 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 306 [2021-02-23 17:53:52,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:52,541 INFO L225 Difference]: With dead ends: 216 [2021-02-23 17:53:52,541 INFO L226 Difference]: Without dead ends: 111 [2021-02-23 17:53:52,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2021-02-23 17:53:52,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-02-23 17:53:52,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-02-23 17:53:52,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2021-02-23 17:53:52,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 129 transitions. [2021-02-23 17:53:52,569 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 129 transitions. Word has length 306 [2021-02-23 17:53:52,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:52,569 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 129 transitions. [2021-02-23 17:53:52,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 17:53:52,570 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 129 transitions. [2021-02-23 17:53:52,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-02-23 17:53:52,571 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:53:52,572 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 8, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-02-23 17:53:52,572 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-23 17:53:52,572 INFO L428 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:53:52,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:53:52,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1120622697, now seen corresponding path program 4 times [2021-02-23 17:53:52,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:53:52,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224563403] [2021-02-23 17:53:52,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:53:52,575 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:53:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:52,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:52,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:52,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:52,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:53:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:52,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:52,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:53:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:52,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:52,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:52,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:52,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:52,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:52,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:52,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:52,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:52,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:52,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:52,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:52,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:52,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:52,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:52,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:52,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:52,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:52,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:52,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:52,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:52,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:52,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:52,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:53:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:52,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:52,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:52,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:52,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:52,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:52,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-02-23 17:53:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:52,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:52,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:52,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:52,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:52,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:52,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:53:52,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:52,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:52,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:52,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:52,970 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-23 17:53:52,971 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-23 17:53:52,990 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-23 17:53:52,991 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-23 17:53:53,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:53,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:53:53,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:53,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:53,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:53,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:53,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:53,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:53,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:53,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:53:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:53,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:53,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:53,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:53:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:53,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:53,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:53,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:53:53,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:53,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:53,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:53,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:53:53,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:53:53,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:53:53,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:53:53,178 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-02-23 17:53:53,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224563403] [2021-02-23 17:53:53,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:53:53,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-02-23 17:53:53,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545750833] [2021-02-23 17:53:53,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-23 17:53:53,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:53:53,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-23 17:53:53,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-02-23 17:53:53,181 INFO L87 Difference]: Start difference. First operand 111 states and 129 transitions. Second operand 21 states. [2021-02-23 17:53:54,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:53:54,485 INFO L93 Difference]: Finished difference Result 111 states and 129 transitions. [2021-02-23 17:53:54,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-23 17:53:54,486 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 183 [2021-02-23 17:53:54,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:53:54,487 INFO L225 Difference]: With dead ends: 111 [2021-02-23 17:53:54,487 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 17:53:54,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=252, Invalid=1388, Unknown=0, NotChecked=0, Total=1640 [2021-02-23 17:53:54,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 17:53:54,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 17:53:54,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 17:53:54,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 17:53:54,490 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 183 [2021-02-23 17:53:54,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:53:54,490 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 17:53:54,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-02-23 17:53:54,490 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 17:53:54,490 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 17:53:54,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-23 17:53:54,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 17:54:01,448 WARN L202 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 9 [2021-02-23 17:54:01,592 WARN L202 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 6 [2021-02-23 17:54:02,028 WARN L202 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 26 [2021-02-23 17:54:02,225 WARN L202 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 6 [2021-02-23 17:54:02,958 WARN L202 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 46 [2021-02-23 17:54:03,560 WARN L202 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 34 [2021-02-23 17:54:03,899 WARN L202 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 26 [2021-02-23 17:54:04,543 WARN L202 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 40 [2021-02-23 17:54:05,193 WARN L202 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 40 [2021-02-23 17:54:05,362 WARN L202 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 6 [2021-02-23 17:54:05,943 WARN L202 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 24 [2021-02-23 17:54:06,420 WARN L202 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 35 [2021-02-23 17:54:07,019 WARN L202 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 34 [2021-02-23 17:54:07,548 WARN L202 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 35 [2021-02-23 17:54:07,674 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 6 [2021-02-23 17:54:08,762 WARN L202 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 125 DAG size of output: 43 [2021-02-23 17:54:08,900 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 7 [2021-02-23 17:54:09,456 WARN L202 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 24 [2021-02-23 17:54:10,118 WARN L202 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 34 [2021-02-23 17:54:10,612 WARN L202 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 41 [2021-02-23 17:54:11,001 WARN L202 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 30 [2021-02-23 17:54:11,139 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 8 [2021-02-23 17:54:12,312 WARN L202 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 125 DAG size of output: 43 [2021-02-23 17:54:12,488 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-02-23 17:54:12,488 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-02-23 17:54:12,488 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-02-23 17:54:12,488 INFO L192 CegarLoopUtils]: At program point L4-3(line 4) the Hoare annotation is: true [2021-02-23 17:54:12,488 INFO L192 CegarLoopUtils]: At program point L4-4(line 4) the Hoare annotation is: true [2021-02-23 17:54:12,489 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 17:54:12,489 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 17:54:12,489 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 4) the Hoare annotation is: true [2021-02-23 17:54:12,489 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|)) [2021-02-23 17:54:12,489 INFO L192 CegarLoopUtils]: At program point L4(line 4) the Hoare annotation is: true [2021-02-23 17:54:12,490 INFO L192 CegarLoopUtils]: At program point L4-1(line 4) the Hoare annotation is: true [2021-02-23 17:54:12,490 INFO L192 CegarLoopUtils]: At program point L4-2(line 4) the Hoare annotation is: true [2021-02-23 17:54:12,490 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-23 17:54:12,490 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-23 17:54:12,490 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 17:54:12,490 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 17:54:12,490 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-23 17:54:12,491 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 41) the Hoare annotation is: false [2021-02-23 17:54:12,491 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 37 44) the Hoare annotation is: true [2021-02-23 17:54:12,491 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 37 44) the Hoare annotation is: (<= 5 main_~x~0) [2021-02-23 17:54:12,491 INFO L185 CegarLoopUtils]: At program point mainFINAL(lines 37 44) the Hoare annotation is: (<= 5 main_~x~0) [2021-02-23 17:54:12,491 INFO L185 CegarLoopUtils]: At program point L41(line 41) the Hoare annotation is: false [2021-02-23 17:54:12,491 INFO L185 CegarLoopUtils]: At program point L40(lines 40 42) the Hoare annotation is: (and (<= main_~x~0 5) (< 4 main_~result~0) (<= 5 main_~x~0) (<= main_~result~0 5)) [2021-02-23 17:54:12,492 INFO L185 CegarLoopUtils]: At program point L41-1(line 41) the Hoare annotation is: false [2021-02-23 17:54:12,492 INFO L185 CegarLoopUtils]: At program point L39(line 39) the Hoare annotation is: (and (<= main_~x~0 5) (<= 5 main_~x~0)) [2021-02-23 17:54:12,492 INFO L185 CegarLoopUtils]: At program point L39-1(line 39) the Hoare annotation is: (and (<= main_~x~0 5) (<= 5 main_~x~0) (<= |main_#t~ret11| 5) (<= 5 |main_#t~ret11|)) [2021-02-23 17:54:12,492 INFO L185 CegarLoopUtils]: At program point L40-2(lines 40 42) the Hoare annotation is: (<= 5 main_~x~0) [2021-02-23 17:54:12,492 INFO L185 CegarLoopUtils]: At program point L39-2(line 39) the Hoare annotation is: (and (<= main_~x~0 5) (<= 5 main_~x~0) (<= |main_#t~ret11| 5) (<= 5 |main_#t~ret11|)) [2021-02-23 17:54:12,492 INFO L185 CegarLoopUtils]: At program point L39-3(line 39) the Hoare annotation is: (and (<= main_~x~0 5) (< 4 main_~result~0) (<= 5 main_~x~0) (<= main_~result~0 5) (<= |main_#t~ret11| 5) (<= 5 |main_#t~ret11|)) [2021-02-23 17:54:12,492 INFO L192 CegarLoopUtils]: At program point fibo2ENTRY(lines 19 27) the Hoare annotation is: true [2021-02-23 17:54:12,493 INFO L185 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (not (<= |fibo2_#in~n| 1))) [2021-02-23 17:54:12,493 INFO L185 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: (and (or (and (<= |fibo2_#t~ret9| 1) (<= 1 |fibo2_#t~ret9|)) (not (<= |fibo2_#in~n| 3))) (or (not (<= |fibo2_#in~n| 4)) (and (<= |fibo2_#t~ret9| 2) (<= 2 |fibo2_#t~ret9|)) (<= fibo2_~n 3)) (= fibo2_~n |fibo2_#in~n|) (not (<= |fibo2_#in~n| 1))) [2021-02-23 17:54:12,493 INFO L185 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (<= |fibo2_#in~n| 1) (< 0 fibo2_~n)) [2021-02-23 17:54:12,493 INFO L185 CegarLoopUtils]: At program point L25-2(line 25) the Hoare annotation is: (and (or (and (<= |fibo2_#t~ret9| 1) (<= 1 |fibo2_#t~ret9|)) (not (<= |fibo2_#in~n| 3))) (or (not (<= |fibo2_#in~n| 4)) (and (<= |fibo2_#t~ret9| 2) (<= 2 |fibo2_#t~ret9|)) (<= fibo2_~n 3)) (= fibo2_~n |fibo2_#in~n|) (not (<= |fibo2_#in~n| 1))) [2021-02-23 17:54:12,493 INFO L185 CegarLoopUtils]: At program point L22(lines 22 26) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (< 0 fibo2_~n)) [2021-02-23 17:54:12,493 INFO L185 CegarLoopUtils]: At program point L25-3(line 25) the Hoare annotation is: (let ((.cse2 (<= |fibo2_#t~ret9| 1)) (.cse0 (= fibo2_~n |fibo2_#in~n|)) (.cse3 (+ |fibo2_#t~ret9| |fibo2_#t~ret10|)) (.cse4 (<= 1 |fibo2_#t~ret9|))) (let ((.cse1 (and (<= 2 .cse3) (<= 3 fibo2_~n) (<= fibo2_~n 3) .cse2 .cse0 (<= .cse3 2) .cse4))) (and (or (and (<= 4 |fibo2_#in~n|) .cse0) .cse1 (and .cse2 .cse0 (<= .cse3 1) .cse4 (<= 1 .cse3))) (or (not (<= |fibo2_#in~n| 4)) .cse1 (<= fibo2_~n 2) (and (<= .cse3 3) (<= |fibo2_#t~ret9| 2) (<= 3 .cse3) (<= 2 |fibo2_#t~ret9|))) (not (<= |fibo2_#in~n| 1))))) [2021-02-23 17:54:12,493 INFO L185 CegarLoopUtils]: At program point L21(line 21) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (<= |fibo2_#in~n| 0)) [2021-02-23 17:54:12,494 INFO L185 CegarLoopUtils]: At program point L25-4(line 25) the Hoare annotation is: (let ((.cse2 (<= |fibo2_#t~ret9| 1)) (.cse0 (= fibo2_~n |fibo2_#in~n|)) (.cse3 (+ |fibo2_#t~ret9| |fibo2_#t~ret10|)) (.cse4 (<= 1 |fibo2_#t~ret9|))) (let ((.cse1 (and (<= 2 .cse3) (<= 3 fibo2_~n) (<= fibo2_~n 3) .cse2 .cse0 (<= .cse3 2) .cse4))) (and (or (and (<= 4 |fibo2_#in~n|) .cse0) .cse1 (and .cse2 .cse0 (<= .cse3 1) .cse4 (<= 1 .cse3))) (or (not (<= |fibo2_#in~n| 4)) .cse1 (<= fibo2_~n 2) (and (<= .cse3 3) (<= |fibo2_#t~ret9| 2) (<= 3 .cse3) (<= 2 |fibo2_#t~ret9|))) (not (<= |fibo2_#in~n| 1))))) [2021-02-23 17:54:12,494 INFO L185 CegarLoopUtils]: At program point L20(lines 20 26) the Hoare annotation is: (= fibo2_~n |fibo2_#in~n|) [2021-02-23 17:54:12,494 INFO L185 CegarLoopUtils]: At program point L25-5(line 25) the Hoare annotation is: (and (let ((.cse1 (<= |fibo2_#t~ret9| 1)) (.cse3 (<= 1 |fibo2_#t~ret9|)) (.cse2 (= fibo2_~n |fibo2_#in~n|)) (.cse0 (+ |fibo2_#t~ret9| |fibo2_#t~ret10|))) (or (and (<= 2 .cse0) (<= |fibo2_#res| 2) (<= 3 fibo2_~n) (<= 2 |fibo2_#res|) (<= fibo2_~n 3) .cse1 .cse2 (<= .cse0 2) .cse3) (and .cse2 (<= 5 fibo2_~n)) (and (<= 1 |fibo2_#res|) (<= |fibo2_#res| 1) .cse1 .cse2 (<= fibo2_~n 2) (<= .cse0 1) .cse3 (<= 1 .cse0)) (and (<= .cse0 3) (<= |fibo2_#t~ret9| 2) (<= 4 |fibo2_#in~n|) (<= 3 |fibo2_#res|) (<= |fibo2_#res| 3) .cse2 (<= 3 .cse0) (<= 2 |fibo2_#t~ret9|)))) (not (<= |fibo2_#in~n| 1))) [2021-02-23 17:54:12,494 INFO L185 CegarLoopUtils]: At program point L25-6(line 25) the Hoare annotation is: (and (or (and (<= 1 |fibo2_#res|) (<= |fibo2_#res| 1) (<= fibo2_~n 2)) (and (<= |fibo2_#res| 2) (<= 3 fibo2_~n) (<= 2 |fibo2_#res|)) (not (<= |fibo2_#in~n| 3))) (let ((.cse0 (= fibo2_~n |fibo2_#in~n|))) (or (and .cse0 (<= 5 fibo2_~n)) (and (<= fibo2_~n 3) .cse0) (and (<= 3 |fibo2_#res|) (<= |fibo2_#res| 3) .cse0))) (not (<= |fibo2_#in~n| 1))) [2021-02-23 17:54:12,494 INFO L185 CegarLoopUtils]: At program point fibo2FINAL(lines 19 27) the Hoare annotation is: (and (or (and (<= |fibo2_#res| 0) (<= 0 |fibo2_#res|)) (< 0 fibo2_~n)) (or (and (<= 1 |fibo2_#res|) (<= |fibo2_#res| 1)) (<= |fibo2_#in~n| 0) (not (<= |fibo2_#in~n| 2))) (or (<= fibo2_~n 2) (and (<= |fibo2_#res| 2) (<= 2 |fibo2_#res|) (<= fibo2_~n 3)) (<= 5 fibo2_~n) (and (<= 4 |fibo2_#in~n|) (<= 3 |fibo2_#res|) (<= |fibo2_#res| 3))) (= fibo2_~n |fibo2_#in~n|)) [2021-02-23 17:54:12,494 INFO L185 CegarLoopUtils]: At program point fibo2EXIT(lines 19 27) the Hoare annotation is: (and (or (and (<= |fibo2_#res| 0) (<= 0 |fibo2_#res|)) (< 0 fibo2_~n)) (or (and (<= 1 |fibo2_#res|) (<= |fibo2_#res| 1)) (<= |fibo2_#in~n| 0) (not (<= |fibo2_#in~n| 2))) (or (<= fibo2_~n 2) (and (<= |fibo2_#res| 2) (<= 2 |fibo2_#res|) (<= fibo2_~n 3)) (<= 5 fibo2_~n) (and (<= 4 |fibo2_#in~n|) (<= 3 |fibo2_#res|) (<= |fibo2_#res| 3))) (= fibo2_~n |fibo2_#in~n|)) [2021-02-23 17:54:12,495 INFO L192 CegarLoopUtils]: At program point fibo1ENTRY(lines 9 17) the Hoare annotation is: true [2021-02-23 17:54:12,495 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: (and (not (<= |fibo1_#in~n| 1)) (= fibo1_~n |fibo1_#in~n|)) [2021-02-23 17:54:12,495 INFO L185 CegarLoopUtils]: At program point L15-1(line 15) the Hoare annotation is: (and (not (<= |fibo1_#in~n| 1)) (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 3 |fibo1_#t~ret7|) (<= 5 fibo1_~n) .cse0 (<= |fibo1_#t~ret7| 3)) (and .cse0 (<= 6 fibo1_~n)) (and (<= 1 |fibo1_#t~ret7|) (<= |fibo1_#t~ret7| 1) .cse0 (<= fibo1_~n 3)) (and (<= 4 fibo1_~n) (<= fibo1_~n 4) .cse0)))) [2021-02-23 17:54:12,495 INFO L185 CegarLoopUtils]: At program point L13(line 13) the Hoare annotation is: (and (<= |fibo1_#in~n| 1) (< 0 fibo1_~n) (= fibo1_~n |fibo1_#in~n|)) [2021-02-23 17:54:12,495 INFO L185 CegarLoopUtils]: At program point L15-2(line 15) the Hoare annotation is: (and (not (<= |fibo1_#in~n| 1)) (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 3 |fibo1_#t~ret7|) (<= 5 fibo1_~n) .cse0 (<= |fibo1_#t~ret7| 3)) (and .cse0 (<= 6 fibo1_~n)) (and (<= 1 |fibo1_#t~ret7|) (<= |fibo1_#t~ret7| 1) .cse0 (<= fibo1_~n 3)) (and (<= 4 fibo1_~n) (<= fibo1_~n 4) .cse0)))) [2021-02-23 17:54:12,495 INFO L185 CegarLoopUtils]: At program point L12(lines 12 16) the Hoare annotation is: (and (= fibo1_~n |fibo1_#in~n|) (< 0 fibo1_~n)) [2021-02-23 17:54:12,495 INFO L185 CegarLoopUtils]: At program point L15-3(line 15) the Hoare annotation is: (let ((.cse2 (<= 1 |fibo1_#t~ret7|)) (.cse3 (<= |fibo1_#t~ret7| 1)) (.cse1 (+ |fibo1_#t~ret7| |fibo1_#t~ret8|))) (and (not (<= |fibo1_#in~n| 1)) (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and .cse0 (<= 6 fibo1_~n)) (and (<= 3 |fibo1_#t~ret7|) (<= 5 .cse1) .cse0 (<= |fibo1_#t~ret7| 3) (<= .cse1 5)) (and (<= fibo1_~n 4) .cse0))) (or (and .cse2 (<= 2 .cse1) (<= .cse1 2) .cse3) (not (<= |fibo1_#in~n| 3)) (<= fibo1_~n 2)) (or (and .cse2 (<= 1 .cse1) .cse3 (<= .cse1 1)) (not (<= |fibo1_#in~n| 2))))) [2021-02-23 17:54:12,495 INFO L185 CegarLoopUtils]: At program point L11(line 11) the Hoare annotation is: (and (<= |fibo1_#in~n| 0) (= fibo1_~n |fibo1_#in~n|)) [2021-02-23 17:54:12,496 INFO L185 CegarLoopUtils]: At program point L15-4(line 15) the Hoare annotation is: (let ((.cse2 (<= 1 |fibo1_#t~ret7|)) (.cse3 (<= |fibo1_#t~ret7| 1)) (.cse1 (+ |fibo1_#t~ret7| |fibo1_#t~ret8|))) (and (not (<= |fibo1_#in~n| 1)) (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and .cse0 (<= 6 fibo1_~n)) (and (<= 3 |fibo1_#t~ret7|) (<= 5 .cse1) .cse0 (<= |fibo1_#t~ret7| 3) (<= .cse1 5)) (and (<= fibo1_~n 4) .cse0))) (or (and .cse2 (<= 2 .cse1) (<= .cse1 2) .cse3) (not (<= |fibo1_#in~n| 3)) (<= fibo1_~n 2)) (or (and .cse2 (<= 1 .cse1) .cse3 (<= .cse1 1)) (not (<= |fibo1_#in~n| 2))))) [2021-02-23 17:54:12,496 INFO L185 CegarLoopUtils]: At program point fibo1FINAL(lines 9 17) the Hoare annotation is: (let ((.cse0 (<= |fibo1_#in~n| 1)) (.cse1 (and (<= |fibo1_#res| 1) (<= 1 |fibo1_#res|)))) (and (or (not .cse0) (<= |fibo1_#in~n| 0) .cse1) (let ((.cse2 (<= fibo1_~n 4)) (.cse3 (< 1 fibo1_~n)) (.cse4 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 2 |fibo1_#res|) .cse2 .cse3 (<= |fibo1_#res| 2) .cse4) (and .cse2 .cse3 (<= 4 |fibo1_#in~n|) .cse4) (and .cse4 (<= 6 fibo1_~n)) (and (<= 5 fibo1_~n) (<= 5 |fibo1_#res|) (<= |fibo1_#res| 5) .cse4) (and .cse4 (<= fibo1_~n 2)))) (or (and (<= 0 |fibo1_#res|) (<= |fibo1_#res| 0)) (< 0 fibo1_~n)) (or .cse0 .cse1 (not (<= |fibo1_#in~n| 2))))) [2021-02-23 17:54:12,496 INFO L185 CegarLoopUtils]: At program point L10(lines 10 16) the Hoare annotation is: (= fibo1_~n |fibo1_#in~n|) [2021-02-23 17:54:12,496 INFO L185 CegarLoopUtils]: At program point L15-5(line 15) the Hoare annotation is: (let ((.cse1 (<= 1 |fibo1_#t~ret7|)) (.cse3 (<= |fibo1_#t~ret7| 1)) (.cse2 (+ |fibo1_#t~ret7| |fibo1_#t~ret8|))) (and (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 4 |fibo1_#in~n|) .cse0) (and (<= 2 |fibo1_#res|) .cse1 (<= 2 .cse2) (<= .cse2 2) .cse3 (<= |fibo1_#res| 2) .cse0) (and .cse0 (<= fibo1_~n 2)))) (not (<= |fibo1_#in~n| 1)) (or (<= fibo1_~n 4) (and (<= 3 |fibo1_#t~ret7|) (<= 5 .cse2) (<= 5 |fibo1_#res|) (<= |fibo1_#res| 5) (<= |fibo1_#t~ret7| 3) (<= .cse2 5)) (<= 6 fibo1_~n)) (or (not (<= |fibo1_#in~n| 2)) (and .cse1 (<= 1 .cse2) .cse3 (<= |fibo1_#res| 1) (<= .cse2 1) (<= 1 |fibo1_#res|))))) [2021-02-23 17:54:12,496 INFO L185 CegarLoopUtils]: At program point L15-6(line 15) the Hoare annotation is: (and (or (and (< 1 fibo1_~n) (<= |fibo1_#res| 1) (<= 1 |fibo1_#res|)) (not (<= |fibo1_#in~n| 2))) (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and .cse0 (<= 6 fibo1_~n)) (and (<= 2 |fibo1_#res|) (<= |fibo1_#res| 2) .cse0 (<= fibo1_~n 3)) (and (<= fibo1_~n 4) (<= 4 |fibo1_#in~n|) .cse0) (and (<= 5 fibo1_~n) (<= 5 |fibo1_#res|) (<= |fibo1_#res| 5) .cse0) (and .cse0 (<= fibo1_~n 2))))) [2021-02-23 17:54:12,497 INFO L185 CegarLoopUtils]: At program point fibo1EXIT(lines 9 17) the Hoare annotation is: (let ((.cse0 (<= |fibo1_#in~n| 1)) (.cse1 (and (<= |fibo1_#res| 1) (<= 1 |fibo1_#res|)))) (and (or (not .cse0) (<= |fibo1_#in~n| 0) .cse1) (let ((.cse2 (<= fibo1_~n 4)) (.cse3 (< 1 fibo1_~n)) (.cse4 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 2 |fibo1_#res|) .cse2 .cse3 (<= |fibo1_#res| 2) .cse4) (and .cse2 .cse3 (<= 4 |fibo1_#in~n|) .cse4) (and .cse4 (<= 6 fibo1_~n)) (and (<= 5 fibo1_~n) (<= 5 |fibo1_#res|) (<= |fibo1_#res| 5) .cse4) (and .cse4 (<= fibo1_~n 2)))) (or (and (<= 0 |fibo1_#res|) (<= |fibo1_#res| 0)) (< 0 fibo1_~n)) (or .cse0 .cse1 (not (<= |fibo1_#in~n| 2))))) [2021-02-23 17:54:12,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:54:12 BoogieIcfgContainer [2021-02-23 17:54:12,521 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 17:54:12,522 INFO L168 Benchmark]: Toolchain (without parser) took 42918.78 ms. Allocated memory was 167.8 MB in the beginning and 434.1 MB in the end (delta: 266.3 MB). Free memory was 143.7 MB in the beginning and 265.6 MB in the end (delta: -121.9 MB). Peak memory consumption was 259.4 MB. Max. memory is 8.0 GB. [2021-02-23 17:54:12,522 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory is still 82.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:54:12,522 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.76 ms. Allocated memory is still 167.8 MB. Free memory was 142.6 MB in the beginning and 132.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 17:54:12,523 INFO L168 Benchmark]: Boogie Preprocessor took 42.13 ms. Allocated memory is still 167.8 MB. Free memory was 132.9 MB in the beginning and 131.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 17:54:12,523 INFO L168 Benchmark]: RCFGBuilder took 622.19 ms. Allocated memory is still 167.8 MB. Free memory was 131.6 MB in the beginning and 115.7 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-23 17:54:12,523 INFO L168 Benchmark]: TraceAbstraction took 41972.05 ms. Allocated memory was 167.8 MB in the beginning and 434.1 MB in the end (delta: 266.3 MB). Free memory was 115.2 MB in the beginning and 265.6 MB in the end (delta: -150.4 MB). Peak memory consumption was 231.1 MB. Max. memory is 8.0 GB. [2021-02-23 17:54:12,524 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory is still 82.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 260.76 ms. Allocated memory is still 167.8 MB. Free memory was 142.6 MB in the beginning and 132.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.13 ms. Allocated memory is still 167.8 MB. Free memory was 132.9 MB in the beginning and 131.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 622.19 ms. Allocated memory is still 167.8 MB. Free memory was 131.6 MB in the beginning and 115.7 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 41972.05 ms. Allocated memory was 167.8 MB in the beginning and 434.1 MB in the end (delta: 266.3 MB). Free memory was 115.2 MB in the beginning and 265.6 MB in the end (delta: -150.4 MB). Peak memory consumption was 231.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 41]: 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: 37]: Procedure Contract for main Derived contract for procedure main: 5 <= x - ProcedureContractResult [Line: 19]: Procedure Contract for fibo2 Derived contract for procedure fibo2: ((((\result <= 0 && 0 <= \result) || 0 < n) && (((1 <= \result && \result <= 1) || \old(n) <= 0) || !(\old(n) <= 2))) && (((n <= 2 || ((\result <= 2 && 2 <= \result) && n <= 3)) || 5 <= n) || ((4 <= \old(n) && 3 <= \result) && \result <= 3))) && n == \old(n) - ProcedureContractResult [Line: 9]: Procedure Contract for fibo1 Derived contract for procedure fibo1: ((((!(\old(n) <= 1) || \old(n) <= 0) || (\result <= 1 && 1 <= \result)) && ((((((((2 <= \result && n <= 4) && 1 < n) && \result <= 2) && n == \old(n)) || (((n <= 4 && 1 < n) && 4 <= \old(n)) && n == \old(n))) || (n == \old(n) && 6 <= n)) || (((5 <= n && 5 <= \result) && \result <= 5) && n == \old(n))) || (n == \old(n) && n <= 2))) && ((0 <= \result && \result <= 0) || 0 < n)) && ((\old(n) <= 1 || (\result <= 1 && 1 <= \result)) || !(\old(n) <= 2)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 23.8s, OverallIterations: 17, TraceHistogramMax: 17, AutomataDifference: 15.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 17.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 861 SDtfs, 1661 SDslu, 2170 SDs, 0 SdLazy, 7022 SolverSat, 812 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 800 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 354 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1938 ImplicationChecksByTransitivity, 9.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=235occurred 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: 0.6s AutomataMinimizationTime, 17 MinimizatonAttempts, 124 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 54 LocationsWithAnnotation, 2756 PreInvPairs, 4965 NumberOfFragments, 1397 HoareAnnotationTreeSize, 2756 FomulaSimplifications, 408844 FormulaSimplificationTreeSizeReduction, 6.7s HoareSimplificationTime, 54 FomulaSimplificationsInter, 49653 FormulaSimplificationTreeSizeReductionInter, 11.1s 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...