/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_i25_o25-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:56:00,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:56:00,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:56:00,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 17:56:00,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:56:00,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:56:00,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:56:00,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:56:00,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:56:00,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:56:00,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:56:00,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:56:00,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:56:00,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:56:00,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:56:00,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:56:00,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 17:56:00,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:56:00,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:56:00,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:56:00,923 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 17:56:00,936 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:56:00,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:56:00,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:56:00,939 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:56:00,939 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:56:00,939 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:56:00,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:56:00,940 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:56:00,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:56:00,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:56:00,940 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:56:00,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:56:00,941 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:56:00,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:56:00,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:56:00,941 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:56:00,942 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:56:00,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:56:00,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:56:00,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:56:00,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:56:00,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:56:00,943 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:56:01,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:56:01,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:56:01,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:56:01,353 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:56:01,354 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:56:01,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i25_o25-1.c [2021-02-23 17:56:01,449 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e17c7ecaf/a86573ed2b1e430bbb603ab307221750/FLAGcddcc1b6f [2021-02-23 17:56:02,049 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:56:02,050 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i25_o25-1.c [2021-02-23 17:56:02,061 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e17c7ecaf/a86573ed2b1e430bbb603ab307221750/FLAGcddcc1b6f [2021-02-23 17:56:02,446 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e17c7ecaf/a86573ed2b1e430bbb603ab307221750 [2021-02-23 17:56:02,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:56:02,464 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:56:02,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:56:02,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:56:02,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:56:02,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:56:02" (1/1) ... [2021-02-23 17:56:02,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a1f40d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:56:02, skipping insertion in model container [2021-02-23 17:56:02,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:56:02" (1/1) ... [2021-02-23 17:56:02,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:56:02,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:56:02,644 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i25_o25-1.c[454,467] [2021-02-23 17:56:02,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:56:02,661 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:56:02,677 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i25_o25-1.c[454,467] [2021-02-23 17:56:02,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:56:02,694 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:56:02,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:56:02 WrapperNode [2021-02-23 17:56:02,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:56:02,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:56:02,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:56:02,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:56:02,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:56:02" (1/1) ... [2021-02-23 17:56:02,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:56:02" (1/1) ... [2021-02-23 17:56:02,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:56:02" (1/1) ... [2021-02-23 17:56:02,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:56:02" (1/1) ... [2021-02-23 17:56:02,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:56:02" (1/1) ... [2021-02-23 17:56:02,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:56:02" (1/1) ... [2021-02-23 17:56:02,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:56:02" (1/1) ... [2021-02-23 17:56:02,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:56:02,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:56:02,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:56:02,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:56:02,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:56:02" (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 17:56:02,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:56:02,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:56:02,834 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:56:02,834 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-02-23 17:56:02,834 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:56:02,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 17:56:02,835 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:56:02,835 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:56:02,835 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:56:02,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:56:02,836 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-02-23 17:56:02,836 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:56:02,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:56:02,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:56:02,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:56:02,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:56:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:56:02,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:56:03,135 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:56:03,135 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 17:56:03,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:56:03 BoogieIcfgContainer [2021-02-23 17:56:03,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:56:03,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:56:03,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:56:03,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:56:03,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:56:02" (1/3) ... [2021-02-23 17:56:03,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee375ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:56:03, skipping insertion in model container [2021-02-23 17:56:03,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:56:02" (2/3) ... [2021-02-23 17:56:03,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee375ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:56:03, skipping insertion in model container [2021-02-23 17:56:03,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:56:03" (3/3) ... [2021-02-23 17:56:03,162 INFO L111 eAbstractionObserver]: Analyzing ICFG id_i25_o25-1.c [2021-02-23 17:56:03,177 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:56:03,182 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:56:03,216 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:56:03,280 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:56:03,281 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:56:03,281 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:56:03,281 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:56:03,281 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:56:03,281 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:56:03,281 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:56:03,282 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:56:03,325 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2021-02-23 17:56:03,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-23 17:56:03,350 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:03,353 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 17:56:03,354 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:03,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:03,374 INFO L82 PathProgramCache]: Analyzing trace with hash -777358502, now seen corresponding path program 1 times [2021-02-23 17:56:03,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:03,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159253324] [2021-02-23 17:56:03,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:03,504 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:03,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:03,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:03,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:03,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:03,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:03,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:03,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:03,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:03,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:03,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:56:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:03,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:03,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:03,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:03,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:03,919 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 17:56:03,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159253324] [2021-02-23 17:56:03,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:03,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 17:56:03,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985467472] [2021-02-23 17:56:03,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 17:56:03,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:03,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 17:56:03,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 17:56:03,947 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 6 states. [2021-02-23 17:56:04,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:04,193 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2021-02-23 17:56:04,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 17:56:04,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-02-23 17:56:04,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:04,207 INFO L225 Difference]: With dead ends: 46 [2021-02-23 17:56:04,207 INFO L226 Difference]: Without dead ends: 31 [2021-02-23 17:56:04,211 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 17:56:04,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-02-23 17:56:04,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-02-23 17:56:04,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-02-23 17:56:04,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-02-23 17:56:04,292 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 24 [2021-02-23 17:56:04,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:04,293 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-02-23 17:56:04,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 17:56:04,293 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-02-23 17:56:04,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-23 17:56:04,296 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:04,297 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:56:04,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:56:04,298 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:04,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:04,299 INFO L82 PathProgramCache]: Analyzing trace with hash 814440848, now seen corresponding path program 1 times [2021-02-23 17:56:04,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:04,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255341653] [2021-02-23 17:56:04,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:04,310 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:04,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:04,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:04,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:04,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:04,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:04,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:04,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:04,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:04,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:04,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:56:04,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:04,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:04,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:04,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:04,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:04,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:04,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:04,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:04,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:04,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:04,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-23 17:56:04,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255341653] [2021-02-23 17:56:04,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:04,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 17:56:04,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218485683] [2021-02-23 17:56:04,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 17:56:04,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:04,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 17:56:04,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-23 17:56:04,583 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 7 states. [2021-02-23 17:56:04,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:04,833 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2021-02-23 17:56:04,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 17:56:04,834 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2021-02-23 17:56:04,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:04,836 INFO L225 Difference]: With dead ends: 42 [2021-02-23 17:56:04,836 INFO L226 Difference]: Without dead ends: 36 [2021-02-23 17:56:04,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-02-23 17:56:04,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-02-23 17:56:04,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-02-23 17:56:04,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-02-23 17:56:04,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2021-02-23 17:56:04,860 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 32 [2021-02-23 17:56:04,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:04,864 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2021-02-23 17:56:04,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 17:56:04,864 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2021-02-23 17:56:04,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-23 17:56:04,866 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:04,866 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:56:04,867 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:56:04,867 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:04,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:04,868 INFO L82 PathProgramCache]: Analyzing trace with hash -545888486, now seen corresponding path program 2 times [2021-02-23 17:56:04,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:04,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749891674] [2021-02-23 17:56:04,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:04,871 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:04,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:04,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:04,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:04,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:04,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:04,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:04,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:04,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:04,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:04,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:56:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:04,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:04,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:04,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:04,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:04,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:04,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:04,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:04,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:04,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:05,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:05,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:05,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:05,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:05,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:05,058 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-02-23 17:56:05,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749891674] [2021-02-23 17:56:05,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:05,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 17:56:05,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953680500] [2021-02-23 17:56:05,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 17:56:05,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:05,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 17:56:05,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-23 17:56:05,066 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 8 states. [2021-02-23 17:56:05,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:05,342 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2021-02-23 17:56:05,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-23 17:56:05,343 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2021-02-23 17:56:05,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:05,345 INFO L225 Difference]: With dead ends: 47 [2021-02-23 17:56:05,345 INFO L226 Difference]: Without dead ends: 41 [2021-02-23 17:56:05,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-02-23 17:56:05,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-02-23 17:56:05,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-02-23 17:56:05,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-02-23 17:56:05,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-02-23 17:56:05,360 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 40 [2021-02-23 17:56:05,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:05,361 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-02-23 17:56:05,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 17:56:05,361 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-02-23 17:56:05,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-23 17:56:05,363 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:05,363 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:56:05,363 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 17:56:05,364 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:05,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:05,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1925368272, now seen corresponding path program 3 times [2021-02-23 17:56:05,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:05,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951083632] [2021-02-23 17:56:05,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:05,367 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:05,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:05,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:05,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:05,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:05,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:05,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:05,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:05,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:05,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:05,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:56:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:05,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:05,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:05,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:05,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:05,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:05,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:05,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:05,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:05,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:05,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:05,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:05,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:05,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:05,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:05,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:05,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:05,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:05,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:05,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:05,602 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-02-23 17:56:05,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951083632] [2021-02-23 17:56:05,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:05,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 17:56:05,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344845426] [2021-02-23 17:56:05,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 17:56:05,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:05,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 17:56:05,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-23 17:56:05,605 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 9 states. [2021-02-23 17:56:05,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:05,961 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2021-02-23 17:56:05,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 17:56:05,962 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2021-02-23 17:56:05,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:05,963 INFO L225 Difference]: With dead ends: 52 [2021-02-23 17:56:05,963 INFO L226 Difference]: Without dead ends: 46 [2021-02-23 17:56:05,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-02-23 17:56:05,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-02-23 17:56:05,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-02-23 17:56:05,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-02-23 17:56:05,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2021-02-23 17:56:05,978 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 48 [2021-02-23 17:56:05,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:05,978 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2021-02-23 17:56:05,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 17:56:05,979 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2021-02-23 17:56:05,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-23 17:56:05,981 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:05,981 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:56:05,981 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 17:56:05,981 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:05,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:05,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1702046426, now seen corresponding path program 4 times [2021-02-23 17:56:05,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:05,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319902081] [2021-02-23 17:56:05,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:05,985 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:06,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:06,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:06,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:06,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:06,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:06,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:56:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:06,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:06,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:06,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:06,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:06,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:06,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:06,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:06,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:06,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:06,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:06,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:06,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:06,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:06,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:06,248 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-02-23 17:56:06,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319902081] [2021-02-23 17:56:06,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:06,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 17:56:06,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362953252] [2021-02-23 17:56:06,251 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 17:56:06,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:06,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 17:56:06,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-02-23 17:56:06,253 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 10 states. [2021-02-23 17:56:06,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:06,648 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2021-02-23 17:56:06,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 17:56:06,651 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2021-02-23 17:56:06,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:06,653 INFO L225 Difference]: With dead ends: 57 [2021-02-23 17:56:06,653 INFO L226 Difference]: Without dead ends: 51 [2021-02-23 17:56:06,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-02-23 17:56:06,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-02-23 17:56:06,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-02-23 17:56:06,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-02-23 17:56:06,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2021-02-23 17:56:06,669 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 56 [2021-02-23 17:56:06,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:06,670 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2021-02-23 17:56:06,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 17:56:06,670 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2021-02-23 17:56:06,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-02-23 17:56:06,671 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:06,672 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:56:06,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 17:56:06,672 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:06,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:06,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1874632176, now seen corresponding path program 5 times [2021-02-23 17:56:06,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:06,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583270969] [2021-02-23 17:56:06,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:06,675 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:06,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:06,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:06,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:06,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:06,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:06,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:06,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:56:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:06,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:06,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:06,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:06,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:06,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:06,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:06,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:06,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:06,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:06,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:06,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:06,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:06,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:06,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:06,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:06,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:06,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:06,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:06,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:06,903 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 17:56:06,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583270969] [2021-02-23 17:56:06,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:06,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 17:56:06,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022563853] [2021-02-23 17:56:06,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 17:56:06,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:06,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 17:56:06,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-02-23 17:56:06,905 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 11 states. [2021-02-23 17:56:07,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:07,350 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2021-02-23 17:56:07,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 17:56:07,351 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 64 [2021-02-23 17:56:07,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:07,352 INFO L225 Difference]: With dead ends: 62 [2021-02-23 17:56:07,353 INFO L226 Difference]: Without dead ends: 56 [2021-02-23 17:56:07,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-02-23 17:56:07,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-02-23 17:56:07,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-02-23 17:56:07,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-02-23 17:56:07,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2021-02-23 17:56:07,369 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 64 [2021-02-23 17:56:07,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:07,370 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2021-02-23 17:56:07,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 17:56:07,370 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2021-02-23 17:56:07,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-02-23 17:56:07,371 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:07,371 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:56:07,372 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 17:56:07,372 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:07,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:07,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1809628826, now seen corresponding path program 6 times [2021-02-23 17:56:07,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:07,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379524648] [2021-02-23 17:56:07,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:07,375 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:07,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:07,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:07,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:07,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:07,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:07,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:07,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:07,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:07,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:07,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:56:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:07,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:07,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:07,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:07,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:07,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:07,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:07,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:07,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:07,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:07,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:07,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:07,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:07,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:07,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:07,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:07,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:07,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:07,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:07,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:07,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:07,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:07,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:07,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:07,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:07,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:07,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:07,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:07,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:07,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:07,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:07,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:07,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:07,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:07,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:07,615 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-02-23 17:56:07,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379524648] [2021-02-23 17:56:07,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:07,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 17:56:07,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733906584] [2021-02-23 17:56:07,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 17:56:07,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:07,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 17:56:07,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-02-23 17:56:07,619 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 12 states. [2021-02-23 17:56:08,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:08,123 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2021-02-23 17:56:08,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 17:56:08,123 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2021-02-23 17:56:08,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:08,125 INFO L225 Difference]: With dead ends: 67 [2021-02-23 17:56:08,125 INFO L226 Difference]: Without dead ends: 61 [2021-02-23 17:56:08,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=286, Unknown=0, NotChecked=0, Total=420 [2021-02-23 17:56:08,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-23 17:56:08,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-02-23 17:56:08,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-02-23 17:56:08,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2021-02-23 17:56:08,142 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 72 [2021-02-23 17:56:08,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:08,142 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2021-02-23 17:56:08,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 17:56:08,142 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2021-02-23 17:56:08,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-02-23 17:56:08,144 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:08,144 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:56:08,144 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 17:56:08,144 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:08,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:08,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1448159824, now seen corresponding path program 7 times [2021-02-23 17:56:08,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:08,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138003452] [2021-02-23 17:56:08,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:08,147 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:08,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:08,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:08,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:08,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:08,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:08,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:08,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:08,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:08,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:08,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:56:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:08,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:08,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:08,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:08,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:08,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:08,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:08,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:08,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:08,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:08,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:08,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:08,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:08,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:08,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:08,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:08,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:08,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:08,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:08,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:08,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:08,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:08,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:08,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:08,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:08,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:08,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:08,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:08,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:08,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:08,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:08,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:08,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:08,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:08,373 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:08,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:08,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:08,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:08,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:08,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:08,438 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-02-23 17:56:08,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138003452] [2021-02-23 17:56:08,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:08,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-23 17:56:08,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479151143] [2021-02-23 17:56:08,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 17:56:08,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:08,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 17:56:08,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-02-23 17:56:08,440 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 13 states. [2021-02-23 17:56:08,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:08,932 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2021-02-23 17:56:08,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-23 17:56:08,932 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 80 [2021-02-23 17:56:08,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:08,934 INFO L225 Difference]: With dead ends: 72 [2021-02-23 17:56:08,934 INFO L226 Difference]: Without dead ends: 66 [2021-02-23 17:56:08,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2021-02-23 17:56:08,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-02-23 17:56:08,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-02-23 17:56:08,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-02-23 17:56:08,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2021-02-23 17:56:08,952 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 80 [2021-02-23 17:56:08,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:08,952 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2021-02-23 17:56:08,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 17:56:08,952 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2021-02-23 17:56:08,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-02-23 17:56:08,954 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:08,954 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:56:08,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 17:56:08,954 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:08,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:08,955 INFO L82 PathProgramCache]: Analyzing trace with hash -537976230, now seen corresponding path program 8 times [2021-02-23 17:56:08,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:08,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401619655] [2021-02-23 17:56:08,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:08,957 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:08,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:08,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:08,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:08,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:08,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:08,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:09,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:09,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:09,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:09,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:56:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:09,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:09,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:09,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:09,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:09,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:09,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:09,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:09,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:09,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:09,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:09,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:09,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:09,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:09,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:09,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:09,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:09,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:09,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:09,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:09,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:09,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:09,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:09,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:09,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:09,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:09,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:09,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:09,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:09,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:09,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:09,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:09,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:09,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:09,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:09,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:09,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:09,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:09,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:09,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:09,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:09,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:09,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:09,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:09,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:09,396 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-02-23 17:56:09,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401619655] [2021-02-23 17:56:09,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:09,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 17:56:09,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019779751] [2021-02-23 17:56:09,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 17:56:09,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:09,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 17:56:09,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-02-23 17:56:09,401 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 14 states. [2021-02-23 17:56:09,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:09,937 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2021-02-23 17:56:09,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 17:56:09,938 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 88 [2021-02-23 17:56:09,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:09,939 INFO L225 Difference]: With dead ends: 77 [2021-02-23 17:56:09,939 INFO L226 Difference]: Without dead ends: 71 [2021-02-23 17:56:09,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2021-02-23 17:56:09,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-02-23 17:56:09,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-02-23 17:56:09,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-02-23 17:56:09,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2021-02-23 17:56:09,956 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 88 [2021-02-23 17:56:09,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:09,957 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2021-02-23 17:56:09,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 17:56:09,957 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2021-02-23 17:56:09,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-02-23 17:56:09,958 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:09,959 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:56:09,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 17:56:09,959 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:09,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:09,960 INFO L82 PathProgramCache]: Analyzing trace with hash -852483440, now seen corresponding path program 9 times [2021-02-23 17:56:09,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:09,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487868986] [2021-02-23 17:56:09,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:09,962 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:09,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:09,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:09,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:09,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:09,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:09,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:10,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:10,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:10,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:10,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:56:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:10,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:10,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:10,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:10,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:10,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:10,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:10,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:10,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:10,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:10,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:10,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:10,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:10,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:10,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:10,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:10,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:10,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:10,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:10,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:10,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:10,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:10,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:10,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:10,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:10,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:10,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:10,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:10,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:10,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:10,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:10,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:10,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:10,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:10,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:10,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:10,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:10,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:10,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:10,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:10,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:10,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:10,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:10,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:10,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:10,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:10,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:10,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:10,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:10,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:10,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:10,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:10,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:10,347 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-02-23 17:56:10,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487868986] [2021-02-23 17:56:10,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:10,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-23 17:56:10,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969178453] [2021-02-23 17:56:10,349 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 17:56:10,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:10,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 17:56:10,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-02-23 17:56:10,350 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 15 states. [2021-02-23 17:56:10,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:10,973 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2021-02-23 17:56:10,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 17:56:10,974 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 96 [2021-02-23 17:56:10,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:10,975 INFO L225 Difference]: With dead ends: 82 [2021-02-23 17:56:10,975 INFO L226 Difference]: Without dead ends: 76 [2021-02-23 17:56:10,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=230, Invalid=472, Unknown=0, NotChecked=0, Total=702 [2021-02-23 17:56:10,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-02-23 17:56:10,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-02-23 17:56:10,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-02-23 17:56:10,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2021-02-23 17:56:10,993 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 96 [2021-02-23 17:56:10,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:10,994 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2021-02-23 17:56:10,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 17:56:10,994 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2021-02-23 17:56:10,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-02-23 17:56:10,995 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:10,995 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:56:10,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 17:56:10,996 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:10,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:10,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1407604250, now seen corresponding path program 10 times [2021-02-23 17:56:10,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:10,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007858654] [2021-02-23 17:56:10,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:10,999 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:11,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:11,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:11,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:11,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:11,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:11,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:11,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:11,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:11,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:11,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:56:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:11,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:11,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:11,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:11,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:11,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:11,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:11,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:11,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:11,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:11,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:11,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:11,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:11,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:11,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:11,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:11,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:11,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:11,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:11,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:11,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:11,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:11,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:11,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:11,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:11,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:11,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:11,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:11,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:11,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:11,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:11,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:11,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:11,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:11,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:11,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:11,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:11,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:11,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:11,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:11,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:11,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:11,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:11,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:11,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:11,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:11,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:11,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:11,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:11,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:11,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:11,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:11,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:11,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:11,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:11,417 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-02-23 17:56:11,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007858654] [2021-02-23 17:56:11,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:11,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-23 17:56:11,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222157487] [2021-02-23 17:56:11,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 17:56:11,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:11,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 17:56:11,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-02-23 17:56:11,420 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand 16 states. [2021-02-23 17:56:12,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:12,047 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2021-02-23 17:56:12,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 17:56:12,048 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2021-02-23 17:56:12,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:12,049 INFO L225 Difference]: With dead ends: 87 [2021-02-23 17:56:12,049 INFO L226 Difference]: Without dead ends: 81 [2021-02-23 17:56:12,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=268, Invalid=544, Unknown=0, NotChecked=0, Total=812 [2021-02-23 17:56:12,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-02-23 17:56:12,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-02-23 17:56:12,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-02-23 17:56:12,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2021-02-23 17:56:12,066 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 104 [2021-02-23 17:56:12,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:12,066 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2021-02-23 17:56:12,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 17:56:12,066 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2021-02-23 17:56:12,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-02-23 17:56:12,067 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:12,068 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:56:12,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 17:56:12,068 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:12,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:12,068 INFO L82 PathProgramCache]: Analyzing trace with hash 2015644368, now seen corresponding path program 11 times [2021-02-23 17:56:12,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:12,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633412193] [2021-02-23 17:56:12,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:12,071 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:12,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:12,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:12,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:12,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:12,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:12,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:12,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:12,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:12,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:12,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:56:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:12,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:12,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:12,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:12,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:12,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:12,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:12,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:12,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:12,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:12,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:12,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:12,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:12,237 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:12,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:12,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:12,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:12,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:12,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:12,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:12,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:12,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:12,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:12,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:12,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:12,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:12,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:12,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:12,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:12,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:12,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:12,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:12,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:12,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:12,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:12,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:12,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:12,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:12,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:12,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:12,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:12,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:12,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:12,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:12,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:12,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:12,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:12,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:12,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:12,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:12,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:12,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:12,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:12,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:12,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:12,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:12,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:12,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:12,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:12,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:12,538 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-02-23 17:56:12,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633412193] [2021-02-23 17:56:12,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:12,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-23 17:56:12,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616898510] [2021-02-23 17:56:12,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-23 17:56:12,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:12,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-23 17:56:12,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2021-02-23 17:56:12,540 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 17 states. [2021-02-23 17:56:13,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:13,197 INFO L93 Difference]: Finished difference Result 92 states and 93 transitions. [2021-02-23 17:56:13,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-23 17:56:13,198 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 112 [2021-02-23 17:56:13,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:13,199 INFO L225 Difference]: With dead ends: 92 [2021-02-23 17:56:13,199 INFO L226 Difference]: Without dead ends: 86 [2021-02-23 17:56:13,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=309, Invalid=621, Unknown=0, NotChecked=0, Total=930 [2021-02-23 17:56:13,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-02-23 17:56:13,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-02-23 17:56:13,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-02-23 17:56:13,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2021-02-23 17:56:13,216 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 112 [2021-02-23 17:56:13,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:13,216 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2021-02-23 17:56:13,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-23 17:56:13,217 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2021-02-23 17:56:13,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-02-23 17:56:13,218 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:13,218 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 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 17:56:13,218 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-23 17:56:13,219 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:13,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:13,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1090627110, now seen corresponding path program 12 times [2021-02-23 17:56:13,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:13,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983476585] [2021-02-23 17:56:13,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:13,221 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:13,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:13,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:13,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:13,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:13,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:13,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:56:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:13,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:13,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:13,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:13,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:13,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:13,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:13,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:13,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:13,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:13,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:13,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:13,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:13,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:13,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:13,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:13,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:13,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:13,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:13,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:13,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:13,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:13,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:13,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:13,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:13,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:13,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:13,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:13,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:13,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:13,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:13,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:13,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:13,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:13,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:13,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:13,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:13,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:13,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:13,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:13,926 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-02-23 17:56:13,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983476585] [2021-02-23 17:56:13,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:13,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-02-23 17:56:13,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87196258] [2021-02-23 17:56:13,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-23 17:56:13,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:13,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-23 17:56:13,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2021-02-23 17:56:13,928 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand 18 states. [2021-02-23 17:56:14,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:14,644 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2021-02-23 17:56:14,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-23 17:56:14,645 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 120 [2021-02-23 17:56:14,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:14,647 INFO L225 Difference]: With dead ends: 97 [2021-02-23 17:56:14,647 INFO L226 Difference]: Without dead ends: 91 [2021-02-23 17:56:14,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=353, Invalid=703, Unknown=0, NotChecked=0, Total=1056 [2021-02-23 17:56:14,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-02-23 17:56:14,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2021-02-23 17:56:14,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2021-02-23 17:56:14,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2021-02-23 17:56:14,666 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 120 [2021-02-23 17:56:14,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:14,667 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2021-02-23 17:56:14,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-23 17:56:14,667 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2021-02-23 17:56:14,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-02-23 17:56:14,669 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:14,669 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 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 17:56:14,669 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-23 17:56:14,669 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:14,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:14,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1787714800, now seen corresponding path program 13 times [2021-02-23 17:56:14,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:14,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233305015] [2021-02-23 17:56:14,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:14,672 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:14,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:14,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:14,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:14,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:14,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:14,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:14,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:14,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:14,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:14,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:56:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:14,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:14,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:14,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:14,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:14,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:14,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:14,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:14,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:14,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:14,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:14,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:14,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:14,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:14,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:14,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:14,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:14,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:14,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:14,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:14,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:14,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:14,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:14,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:14,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:14,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:14,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:14,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:14,983 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:14,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:14,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:15,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:15,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:15,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:15,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:15,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:15,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:15,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:15,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:15,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:15,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:15,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:15,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:15,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:15,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:15,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:15,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:15,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:15,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:15,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:15,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:15,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:15,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:15,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:15,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:15,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:15,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:15,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:15,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:15,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:15,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:15,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:15,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:15,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:15,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:15,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:15,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:15,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:15,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:15,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:15,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:15,415 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2021-02-23 17:56:15,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233305015] [2021-02-23 17:56:15,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:15,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-23 17:56:15,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002810293] [2021-02-23 17:56:15,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-23 17:56:15,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:15,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-23 17:56:15,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=216, Unknown=0, NotChecked=0, Total=342 [2021-02-23 17:56:15,417 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 19 states. [2021-02-23 17:56:16,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:16,203 INFO L93 Difference]: Finished difference Result 102 states and 103 transitions. [2021-02-23 17:56:16,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 17:56:16,204 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 128 [2021-02-23 17:56:16,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:16,206 INFO L225 Difference]: With dead ends: 102 [2021-02-23 17:56:16,206 INFO L226 Difference]: Without dead ends: 96 [2021-02-23 17:56:16,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=400, Invalid=790, Unknown=0, NotChecked=0, Total=1190 [2021-02-23 17:56:16,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-02-23 17:56:16,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-02-23 17:56:16,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-02-23 17:56:16,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2021-02-23 17:56:16,230 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 128 [2021-02-23 17:56:16,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:16,230 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2021-02-23 17:56:16,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-23 17:56:16,230 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2021-02-23 17:56:16,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-02-23 17:56:16,235 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:16,235 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 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 17:56:16,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-23 17:56:16,235 INFO L428 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:16,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:16,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1030958490, now seen corresponding path program 14 times [2021-02-23 17:56:16,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:16,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572514519] [2021-02-23 17:56:16,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:16,240 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:16,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:16,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,286 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:16,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:16,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:16,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:56:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:16,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:16,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:16,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:16,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:16,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:16,524 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:16,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:16,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:16,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:16,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:16,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:16,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:16,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:16,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:16,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:16,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:16,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:16,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:16,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:16,937 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-02-23 17:56:16,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572514519] [2021-02-23 17:56:16,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:16,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-02-23 17:56:16,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081065082] [2021-02-23 17:56:16,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-23 17:56:16,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:16,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-23 17:56:16,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=238, Unknown=0, NotChecked=0, Total=380 [2021-02-23 17:56:16,939 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand 20 states. [2021-02-23 17:56:17,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:17,908 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2021-02-23 17:56:17,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-23 17:56:17,909 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 136 [2021-02-23 17:56:17,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:17,911 INFO L225 Difference]: With dead ends: 107 [2021-02-23 17:56:17,911 INFO L226 Difference]: Without dead ends: 101 [2021-02-23 17:56:17,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=450, Invalid=882, Unknown=0, NotChecked=0, Total=1332 [2021-02-23 17:56:17,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-02-23 17:56:17,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-02-23 17:56:17,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2021-02-23 17:56:17,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2021-02-23 17:56:17,927 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 136 [2021-02-23 17:56:17,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:17,927 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2021-02-23 17:56:17,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2021-02-23 17:56:17,927 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2021-02-23 17:56:17,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-02-23 17:56:17,929 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:17,929 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 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 17:56:17,930 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-23 17:56:17,930 INFO L428 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:17,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:17,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1583098704, now seen corresponding path program 15 times [2021-02-23 17:56:17,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:17,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668930899] [2021-02-23 17:56:17,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:17,933 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:17,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:17,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:17,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:17,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:17,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:17,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:17,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:18,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:18,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:56:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:18,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:18,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:18,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:18,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:18,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:18,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:18,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:18,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:18,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:18,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:18,365 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:18,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:18,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:18,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:18,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:18,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:18,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:18,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:18,683 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2021-02-23 17:56:18,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668930899] [2021-02-23 17:56:18,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:18,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-02-23 17:56:18,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384725931] [2021-02-23 17:56:18,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-23 17:56:18,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:18,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-23 17:56:18,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=261, Unknown=0, NotChecked=0, Total=420 [2021-02-23 17:56:18,685 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 21 states. [2021-02-23 17:56:19,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:19,653 INFO L93 Difference]: Finished difference Result 112 states and 113 transitions. [2021-02-23 17:56:19,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-23 17:56:19,653 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 144 [2021-02-23 17:56:19,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:19,655 INFO L225 Difference]: With dead ends: 112 [2021-02-23 17:56:19,655 INFO L226 Difference]: Without dead ends: 106 [2021-02-23 17:56:19,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=503, Invalid=979, Unknown=0, NotChecked=0, Total=1482 [2021-02-23 17:56:19,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-02-23 17:56:19,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-02-23 17:56:19,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2021-02-23 17:56:19,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2021-02-23 17:56:19,671 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 144 [2021-02-23 17:56:19,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:19,672 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2021-02-23 17:56:19,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-02-23 17:56:19,672 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2021-02-23 17:56:19,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-02-23 17:56:19,673 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:19,674 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 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 17:56:19,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-23 17:56:19,674 INFO L428 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:19,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:19,675 INFO L82 PathProgramCache]: Analyzing trace with hash -796864166, now seen corresponding path program 16 times [2021-02-23 17:56:19,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:19,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891402509] [2021-02-23 17:56:19,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:19,677 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:19,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:19,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:19,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:19,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:19,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:19,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:19,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:19,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:19,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:19,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:56:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:19,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:19,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:19,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:19,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:19,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:19,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:19,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:19,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:19,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:19,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:19,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:19,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:19,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:19,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:19,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:19,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:19,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:19,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:19,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:19,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:19,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:19,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:19,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:19,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:19,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:19,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:19,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:19,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:19,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:19,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:20,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:20,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:20,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:20,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:20,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:20,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:20,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:20,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:20,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:20,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:20,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:20,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:20,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:20,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:20,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:20,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:20,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:20,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:20,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:20,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:20,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:20,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:20,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:20,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:20,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:20,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:20,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:20,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:20,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:20,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:20,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:20,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:20,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:20,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:20,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:20,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:20,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:20,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:20,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:20,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:20,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:20,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:20,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:20,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:20,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:20,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:20,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:20,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:20,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:20,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:20,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:20,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:20,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:20,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:20,484 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-02-23 17:56:20,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891402509] [2021-02-23 17:56:20,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:20,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-02-23 17:56:20,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193604284] [2021-02-23 17:56:20,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-23 17:56:20,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:20,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-23 17:56:20,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=285, Unknown=0, NotChecked=0, Total=462 [2021-02-23 17:56:20,486 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand 22 states. [2021-02-23 17:56:21,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:21,468 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2021-02-23 17:56:21,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-23 17:56:21,468 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 152 [2021-02-23 17:56:21,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:21,470 INFO L225 Difference]: With dead ends: 117 [2021-02-23 17:56:21,470 INFO L226 Difference]: Without dead ends: 111 [2021-02-23 17:56:21,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=559, Invalid=1081, Unknown=0, NotChecked=0, Total=1640 [2021-02-23 17:56:21,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-02-23 17:56:21,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-02-23 17:56:21,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2021-02-23 17:56:21,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2021-02-23 17:56:21,486 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 152 [2021-02-23 17:56:21,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:21,487 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2021-02-23 17:56:21,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-23 17:56:21,487 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2021-02-23 17:56:21,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-02-23 17:56:21,489 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:21,489 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 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 17:56:21,489 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-23 17:56:21,489 INFO L428 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:21,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:21,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1193796496, now seen corresponding path program 17 times [2021-02-23 17:56:21,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:21,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414523351] [2021-02-23 17:56:21,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:21,499 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:21,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:21,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:21,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:21,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:21,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:21,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:21,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:21,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:21,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:21,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:56:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:21,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:21,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:21,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:21,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:21,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:21,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:21,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:21,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:21,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:21,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:21,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:21,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:21,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:21,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:21,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:21,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:21,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:21,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:21,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:21,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:21,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:21,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:21,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:21,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:21,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:21,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:21,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:21,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:21,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:21,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:21,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:21,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:21,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:21,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:21,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:21,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:21,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:21,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:21,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:21,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:21,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:21,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:21,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:21,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:21,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:21,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:21,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:21,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:21,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:21,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:21,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:21,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:21,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:21,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:21,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:21,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:21,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:21,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:21,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:22,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:22,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:22,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:22,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:22,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:22,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:22,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:22,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:22,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:22,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:22,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:22,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:22,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:22,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:22,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:22,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:22,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:22,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:22,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:22,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:22,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:22,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:22,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:22,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:22,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:22,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:22,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:22,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:22,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:22,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:22,363 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2021-02-23 17:56:22,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414523351] [2021-02-23 17:56:22,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:22,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-02-23 17:56:22,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247863689] [2021-02-23 17:56:22,365 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-23 17:56:22,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:22,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-23 17:56:22,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=310, Unknown=0, NotChecked=0, Total=506 [2021-02-23 17:56:22,366 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 23 states. [2021-02-23 17:56:23,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:23,378 INFO L93 Difference]: Finished difference Result 122 states and 123 transitions. [2021-02-23 17:56:23,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-23 17:56:23,382 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 160 [2021-02-23 17:56:23,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:23,384 INFO L225 Difference]: With dead ends: 122 [2021-02-23 17:56:23,385 INFO L226 Difference]: Without dead ends: 116 [2021-02-23 17:56:23,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=618, Invalid=1188, Unknown=0, NotChecked=0, Total=1806 [2021-02-23 17:56:23,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-02-23 17:56:23,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-02-23 17:56:23,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2021-02-23 17:56:23,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2021-02-23 17:56:23,419 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 160 [2021-02-23 17:56:23,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:23,420 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2021-02-23 17:56:23,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-02-23 17:56:23,421 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2021-02-23 17:56:23,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-02-23 17:56:23,423 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:23,423 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 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 17:56:23,423 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-23 17:56:23,423 INFO L428 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:23,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:23,424 INFO L82 PathProgramCache]: Analyzing trace with hash 509822234, now seen corresponding path program 18 times [2021-02-23 17:56:23,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:23,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589155314] [2021-02-23 17:56:23,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:23,427 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:23,478 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,478 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:23,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:23,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:23,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:23,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:23,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:56:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:23,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:23,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:23,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:23,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:23,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:23,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:23,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:23,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:23,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:23,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:23,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:23,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:23,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:23,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:23,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:23,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:23,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:23,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:23,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:23,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:23,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:23,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:23,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:23,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:23,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:23,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:23,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:23,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:23,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:23,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:23,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:23,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:23,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:23,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:23,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:23,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:23,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:23,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:23,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:24,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:24,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:24,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:24,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:24,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:24,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:24,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:24,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:24,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:24,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:24,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:24,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:24,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:24,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:24,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:24,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:24,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:24,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:24,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:24,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:24,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:24,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:24,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:24,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:24,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:24,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:24,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:24,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:24,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:24,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:24,387 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2021-02-23 17:56:24,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589155314] [2021-02-23 17:56:24,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:24,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-02-23 17:56:24,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213951096] [2021-02-23 17:56:24,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-23 17:56:24,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:24,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-23 17:56:24,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=336, Unknown=0, NotChecked=0, Total=552 [2021-02-23 17:56:24,389 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand 24 states. [2021-02-23 17:56:25,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:25,470 INFO L93 Difference]: Finished difference Result 127 states and 128 transitions. [2021-02-23 17:56:25,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-02-23 17:56:25,471 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 168 [2021-02-23 17:56:25,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:25,474 INFO L225 Difference]: With dead ends: 127 [2021-02-23 17:56:25,474 INFO L226 Difference]: Without dead ends: 121 [2021-02-23 17:56:25,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=680, Invalid=1300, Unknown=0, NotChecked=0, Total=1980 [2021-02-23 17:56:25,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-02-23 17:56:25,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2021-02-23 17:56:25,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2021-02-23 17:56:25,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2021-02-23 17:56:25,496 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 168 [2021-02-23 17:56:25,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:25,496 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2021-02-23 17:56:25,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-23 17:56:25,496 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2021-02-23 17:56:25,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-02-23 17:56:25,498 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:25,499 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 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 17:56:25,499 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-02-23 17:56:25,499 INFO L428 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:25,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:25,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1058589648, now seen corresponding path program 19 times [2021-02-23 17:56:25,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:25,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116232998] [2021-02-23 17:56:25,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:25,502 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:25,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:25,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:25,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:25,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:25,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:25,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:25,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:25,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:25,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:25,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:25,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:56:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:25,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:25,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:25,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:25,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:25,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:25,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:25,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:25,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:25,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:25,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:25,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:25,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:25,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:25,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:25,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:25,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:25,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:25,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:25,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:25,776 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:25,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:25,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:25,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:25,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:25,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:25,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:25,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:25,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:25,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:25,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:25,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:25,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:25,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:25,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:25,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:25,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:25,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:25,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:25,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:25,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:25,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:25,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:25,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:25,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:25,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:25,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:26,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:26,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:26,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:26,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:26,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:26,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:26,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:26,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:26,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:26,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:26,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:26,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:26,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:26,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:26,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:26,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:26,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:26,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:26,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:26,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:26,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:26,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:26,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:26,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:26,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:26,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:26,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:26,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:26,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:26,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:26,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:26,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:26,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:26,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:26,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:26,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:26,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:26,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:26,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:26,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:26,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:26,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:26,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:26,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:26,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:26,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:26,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:26,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:26,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:26,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:26,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:26,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:26,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:26,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:26,620 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2021-02-23 17:56:26,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116232998] [2021-02-23 17:56:26,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:26,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-02-23 17:56:26,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748135320] [2021-02-23 17:56:26,622 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-02-23 17:56:26,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:26,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-02-23 17:56:26,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=363, Unknown=0, NotChecked=0, Total=600 [2021-02-23 17:56:26,623 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 25 states. [2021-02-23 17:56:27,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:27,769 INFO L93 Difference]: Finished difference Result 132 states and 133 transitions. [2021-02-23 17:56:27,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-23 17:56:27,769 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 176 [2021-02-23 17:56:27,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:27,771 INFO L225 Difference]: With dead ends: 132 [2021-02-23 17:56:27,771 INFO L226 Difference]: Without dead ends: 126 [2021-02-23 17:56:27,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=745, Invalid=1417, Unknown=0, NotChecked=0, Total=2162 [2021-02-23 17:56:27,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-02-23 17:56:27,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-02-23 17:56:27,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2021-02-23 17:56:27,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2021-02-23 17:56:27,787 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 176 [2021-02-23 17:56:27,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:27,787 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 127 transitions. [2021-02-23 17:56:27,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-02-23 17:56:27,788 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 127 transitions. [2021-02-23 17:56:27,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-02-23 17:56:27,790 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:27,790 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 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 17:56:27,790 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-02-23 17:56:27,790 INFO L428 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:27,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:27,791 INFO L82 PathProgramCache]: Analyzing trace with hash 844531930, now seen corresponding path program 20 times [2021-02-23 17:56:27,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:27,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767028487] [2021-02-23 17:56:27,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:27,793 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:27,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:27,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:27,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:27,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:27,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:27,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:27,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:27,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:27,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:27,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:56:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:27,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:27,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:27,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:27,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:27,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:27,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:27,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:27,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:27,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:27,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:27,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:27,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:27,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:27,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:27,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:27,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:28,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:28,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:28,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:28,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:28,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:28,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:28,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:28,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:28,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:28,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:28,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:28,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:28,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:28,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:28,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:28,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:28,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:28,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:28,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:28,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:28,880 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2021-02-23 17:56:28,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767028487] [2021-02-23 17:56:28,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:28,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-02-23 17:56:28,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680758256] [2021-02-23 17:56:28,881 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-02-23 17:56:28,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:28,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-02-23 17:56:28,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=391, Unknown=0, NotChecked=0, Total=650 [2021-02-23 17:56:28,882 INFO L87 Difference]: Start difference. First operand 126 states and 127 transitions. Second operand 26 states. [2021-02-23 17:56:30,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:30,061 INFO L93 Difference]: Finished difference Result 137 states and 138 transitions. [2021-02-23 17:56:30,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-23 17:56:30,062 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 184 [2021-02-23 17:56:30,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:30,064 INFO L225 Difference]: With dead ends: 137 [2021-02-23 17:56:30,064 INFO L226 Difference]: Without dead ends: 131 [2021-02-23 17:56:30,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=813, Invalid=1539, Unknown=0, NotChecked=0, Total=2352 [2021-02-23 17:56:30,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-02-23 17:56:30,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-02-23 17:56:30,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2021-02-23 17:56:30,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2021-02-23 17:56:30,081 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 184 [2021-02-23 17:56:30,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:30,082 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2021-02-23 17:56:30,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2021-02-23 17:56:30,082 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2021-02-23 17:56:30,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-02-23 17:56:30,083 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:30,083 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 21, 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 17:56:30,083 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-02-23 17:56:30,084 INFO L428 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:30,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:30,084 INFO L82 PathProgramCache]: Analyzing trace with hash -260905968, now seen corresponding path program 21 times [2021-02-23 17:56:30,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:30,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745241637] [2021-02-23 17:56:30,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:30,087 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:30,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:30,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:30,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:30,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:30,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:56:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:30,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:30,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:30,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:30,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:30,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:30,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:30,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:30,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:30,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:30,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:30,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:30,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:30,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:30,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:30,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:30,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:30,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:30,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:30,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:30,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:30,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:30,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:30,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:30,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:30,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:31,187 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2021-02-23 17:56:31,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745241637] [2021-02-23 17:56:31,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:31,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-02-23 17:56:31,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853609019] [2021-02-23 17:56:31,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-02-23 17:56:31,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:31,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-02-23 17:56:31,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=420, Unknown=0, NotChecked=0, Total=702 [2021-02-23 17:56:31,189 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 27 states. [2021-02-23 17:56:32,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:32,544 INFO L93 Difference]: Finished difference Result 142 states and 143 transitions. [2021-02-23 17:56:32,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-23 17:56:32,550 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 192 [2021-02-23 17:56:32,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:32,552 INFO L225 Difference]: With dead ends: 142 [2021-02-23 17:56:32,552 INFO L226 Difference]: Without dead ends: 136 [2021-02-23 17:56:32,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=884, Invalid=1666, Unknown=0, NotChecked=0, Total=2550 [2021-02-23 17:56:32,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-02-23 17:56:32,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-02-23 17:56:32,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2021-02-23 17:56:32,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2021-02-23 17:56:32,571 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 192 [2021-02-23 17:56:32,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:32,572 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2021-02-23 17:56:32,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2021-02-23 17:56:32,572 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2021-02-23 17:56:32,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-02-23 17:56:32,573 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:32,573 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 22, 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 17:56:32,574 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-02-23 17:56:32,574 INFO L428 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:32,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:32,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1016503450, now seen corresponding path program 22 times [2021-02-23 17:56:32,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:32,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990015651] [2021-02-23 17:56:32,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:32,577 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:32,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:32,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:32,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:32,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:32,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:32,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:32,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:32,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:32,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:32,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:56:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:32,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:32,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:32,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:32,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:32,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:32,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:32,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:32,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:32,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:32,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:32,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:32,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:32,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:32,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:32,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:32,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:32,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:32,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:32,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:32,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:32,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:32,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:32,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:32,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:32,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:32,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:32,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:32,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:32,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:32,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:32,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:32,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:32,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:32,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:32,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:33,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:33,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:33,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:33,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:33,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:33,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:33,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:33,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:33,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:33,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:33,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:33,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:33,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:33,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:33,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:33,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:33,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:33,909 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2021-02-23 17:56:33,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990015651] [2021-02-23 17:56:33,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:33,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-02-23 17:56:33,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998142237] [2021-02-23 17:56:33,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-02-23 17:56:33,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:33,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-02-23 17:56:33,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=450, Unknown=0, NotChecked=0, Total=756 [2021-02-23 17:56:33,912 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand 28 states. [2021-02-23 17:56:35,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:35,413 INFO L93 Difference]: Finished difference Result 147 states and 148 transitions. [2021-02-23 17:56:35,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 17:56:35,413 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 200 [2021-02-23 17:56:35,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:35,415 INFO L225 Difference]: With dead ends: 147 [2021-02-23 17:56:35,415 INFO L226 Difference]: Without dead ends: 141 [2021-02-23 17:56:35,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=958, Invalid=1798, Unknown=0, NotChecked=0, Total=2756 [2021-02-23 17:56:35,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-02-23 17:56:35,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-02-23 17:56:35,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2021-02-23 17:56:35,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2021-02-23 17:56:35,433 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 200 [2021-02-23 17:56:35,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:35,433 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2021-02-23 17:56:35,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2021-02-23 17:56:35,433 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2021-02-23 17:56:35,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-02-23 17:56:35,435 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:35,435 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 23, 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 17:56:35,435 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-02-23 17:56:35,435 INFO L428 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:35,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:35,436 INFO L82 PathProgramCache]: Analyzing trace with hash 8006736, now seen corresponding path program 23 times [2021-02-23 17:56:35,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:35,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978747534] [2021-02-23 17:56:35,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:35,438 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:35,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:35,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:35,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:35,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:35,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:35,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:35,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:35,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:35,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:35,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:56:35,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:35,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:35,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:35,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:35,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:35,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:35,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:35,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:35,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:35,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:35,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:35,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:35,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:35,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:35,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:35,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:35,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:35,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:35,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:35,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:35,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:35,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:35,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:35,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:35,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:35,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:35,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:35,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:35,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:35,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:35,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:35,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:35,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:35,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:35,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:35,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:35,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:35,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:35,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:35,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:35,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:35,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:35,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:35,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:35,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:35,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:35,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:35,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:35,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:35,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:35,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:36,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:36,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:36,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:36,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:36,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:36,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:36,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:36,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:36,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:36,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:36,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:36,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:36,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:36,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:36,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:36,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:36,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:36,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:36,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:36,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:36,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:36,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:36,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:36,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:36,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:36,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:36,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:36,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:36,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:36,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:36,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:36,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:36,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:36,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:36,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:36,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:36,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:36,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:36,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:36,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:36,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:36,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:36,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:36,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:36,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:36,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:36,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:36,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:36,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:36,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:36,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:36,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:36,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:36,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:36,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:36,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:36,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:36,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:36,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:36,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:36,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:36,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:36,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:36,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:36,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:36,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:36,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:36,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:36,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:36,709 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2021-02-23 17:56:36,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978747534] [2021-02-23 17:56:36,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:36,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-02-23 17:56:36,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023183217] [2021-02-23 17:56:36,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-02-23 17:56:36,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:36,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-02-23 17:56:36,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=481, Unknown=0, NotChecked=0, Total=812 [2021-02-23 17:56:36,711 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand 29 states. [2021-02-23 17:56:38,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:38,282 INFO L93 Difference]: Finished difference Result 152 states and 153 transitions. [2021-02-23 17:56:38,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-02-23 17:56:38,282 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 208 [2021-02-23 17:56:38,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:38,284 INFO L225 Difference]: With dead ends: 152 [2021-02-23 17:56:38,284 INFO L226 Difference]: Without dead ends: 146 [2021-02-23 17:56:38,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1035, Invalid=1935, Unknown=0, NotChecked=0, Total=2970 [2021-02-23 17:56:38,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-02-23 17:56:38,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-02-23 17:56:38,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2021-02-23 17:56:38,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 147 transitions. [2021-02-23 17:56:38,307 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 147 transitions. Word has length 208 [2021-02-23 17:56:38,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:38,307 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 147 transitions. [2021-02-23 17:56:38,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2021-02-23 17:56:38,308 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 147 transitions. [2021-02-23 17:56:38,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-02-23 17:56:38,309 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:38,309 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 24, 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 17:56:38,309 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-02-23 17:56:38,310 INFO L428 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:38,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:38,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1381990490, now seen corresponding path program 24 times [2021-02-23 17:56:38,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:38,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285948433] [2021-02-23 17:56:38,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:38,313 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:38,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:38,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:38,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:38,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:38,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:38,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:56:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:38,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:38,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:38,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:38,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:38,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:38,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:38,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:38,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:38,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:38,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:38,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:38,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:38,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:38,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:38,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:38,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:38,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:38,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:38,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:38,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:38,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:38,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:38,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:38,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:38,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:38,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:38,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:38,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:38,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:38,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:38,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:38,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:38,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:38,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:38,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:38,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:38,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:38,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:38,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:38,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:39,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:39,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:39,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:39,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:39,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:39,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:39,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:39,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:39,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:39,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:39,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:39,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:39,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:39,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:39,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:39,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:39,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:39,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:39,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:39,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:39,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:39,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:39,145 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:39,146 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:39,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:39,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:39,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:39,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:39,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:39,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:39,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:39,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:39,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:39,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:39,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:39,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:39,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:39,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:39,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:39,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:39,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:39,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:39,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:39,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:39,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:39,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:39,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:39,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:39,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:39,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:39,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:39,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:39,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:39,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:39,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:39,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:39,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:39,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:39,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:39,686 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2021-02-23 17:56:39,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285948433] [2021-02-23 17:56:39,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:39,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-02-23 17:56:39,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712912424] [2021-02-23 17:56:39,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-02-23 17:56:39,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:39,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-02-23 17:56:39,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=513, Unknown=0, NotChecked=0, Total=870 [2021-02-23 17:56:39,688 INFO L87 Difference]: Start difference. First operand 146 states and 147 transitions. Second operand 30 states. [2021-02-23 17:56:41,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:41,183 INFO L93 Difference]: Finished difference Result 157 states and 158 transitions. [2021-02-23 17:56:41,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-02-23 17:56:41,185 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 216 [2021-02-23 17:56:41,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:41,188 INFO L225 Difference]: With dead ends: 157 [2021-02-23 17:56:41,188 INFO L226 Difference]: Without dead ends: 151 [2021-02-23 17:56:41,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1115, Invalid=2077, Unknown=0, NotChecked=0, Total=3192 [2021-02-23 17:56:41,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-02-23 17:56:41,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2021-02-23 17:56:41,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2021-02-23 17:56:41,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2021-02-23 17:56:41,209 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 216 [2021-02-23 17:56:41,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:41,209 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2021-02-23 17:56:41,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2021-02-23 17:56:41,210 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2021-02-23 17:56:41,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-02-23 17:56:41,211 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:41,211 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 25, 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 17:56:41,211 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-02-23 17:56:41,212 INFO L428 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:41,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:41,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1332913296, now seen corresponding path program 25 times [2021-02-23 17:56:41,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:41,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567256343] [2021-02-23 17:56:41,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:41,215 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:41,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:41,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:41,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:41,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:41,324 WARN L141 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-02-23 17:56:41,325 WARN L147 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size 7 [2021-02-23 17:56:41,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:41,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:41,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:41,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:41,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:41,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:56:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:41,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:41,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:41,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:41,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:41,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:41,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:41,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:41,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:41,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:41,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:41,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:41,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:41,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:41,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:41,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:41,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:41,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:41,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:41,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:41,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:41,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:41,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:41,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:41,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:41,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:41,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:41,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:41,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:41,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:41,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:41,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:41,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:41,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:41,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:41,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:42,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:42,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:42,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:42,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:42,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:42,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:42,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:42,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:42,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:42,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:42,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:42,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:42,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:42,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:42,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:42,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:42,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:42,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:42,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:42,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:42,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:42,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:42,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:42,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:42,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:42,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:42,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:42,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:42,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:42,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:42,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:42,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:42,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:42,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:42,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:42,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:42,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:42,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:42,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:42,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:42,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:42,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:42,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:42,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:42,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:42,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:42,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:42,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:42,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:42,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:42,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:42,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:42,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:42,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:42,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:42,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:42,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:42,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:42,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:42,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:42,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:42,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:43,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:43,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:43,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:43,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:43,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:43,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:43,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:43,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:43,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:43,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:43,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:43,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:43,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:43,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:43,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:43,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:43,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:43,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:43,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:43,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:43,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:43,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:43,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:43,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:43,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:43,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:43,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:43,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:43,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:43,506 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:43,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:43,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:43,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:43,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:43,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:43,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:43,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:43,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:43,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:43,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:43,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:43,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:43,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:43,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:43,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:43,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:43,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:43,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:43,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:43,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:43,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:43,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:43,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:43,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:43,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:43,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:43,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:43,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:43,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:43,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:43,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:44,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:44,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:44,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:44,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:44,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:44,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:44,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:44,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:44,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:44,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:44,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:44,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:44,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:44,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:44,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:44,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:56:44,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:44,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:44,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:44,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:44,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:44,905 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2021-02-23 17:56:44,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567256343] [2021-02-23 17:56:44,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:44,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2021-02-23 17:56:44,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326381994] [2021-02-23 17:56:44,906 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-02-23 17:56:44,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:44,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-02-23 17:56:44,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=2971, Unknown=0, NotChecked=0, Total=3080 [2021-02-23 17:56:44,908 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 56 states. [2021-02-23 17:56:56,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:56:56,598 INFO L93 Difference]: Finished difference Result 162 states and 163 transitions. [2021-02-23 17:56:56,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-02-23 17:56:56,599 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 224 [2021-02-23 17:56:56,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:56:56,605 INFO L225 Difference]: With dead ends: 162 [2021-02-23 17:56:56,605 INFO L226 Difference]: Without dead ends: 156 [2021-02-23 17:56:56,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3055 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=503, Invalid=17587, Unknown=0, NotChecked=0, Total=18090 [2021-02-23 17:56:56,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-02-23 17:56:56,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-02-23 17:56:56,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2021-02-23 17:56:56,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 157 transitions. [2021-02-23 17:56:56,639 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 157 transitions. Word has length 224 [2021-02-23 17:56:56,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:56:56,639 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 157 transitions. [2021-02-23 17:56:56,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2021-02-23 17:56:56,640 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 157 transitions. [2021-02-23 17:56:56,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-02-23 17:56:56,643 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:56:56,644 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 26, 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 17:56:56,644 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-02-23 17:56:56,644 INFO L428 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:56:56,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:56:56,644 INFO L82 PathProgramCache]: Analyzing trace with hash 770520090, now seen corresponding path program 26 times [2021-02-23 17:56:56,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:56:56,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674258615] [2021-02-23 17:56:56,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:56:56,649 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:56:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:56,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:56,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:56,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:56,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:56,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:56,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:56,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:56:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:56,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:56,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:56:56,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 17:56:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:56,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:56,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:56,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:56,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:56,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:56,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:56,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:56,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:56,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:56,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:56,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:56,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:56,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:56,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:56,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,404 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:57,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:57,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,867 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:57,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:57,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:57,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:58,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:58,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:58,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:58,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:58,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:58,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 17:56:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:56:58,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:58,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:58,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:56:58,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:56:58,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2021-02-23 17:56:58,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674258615] [2021-02-23 17:56:58,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:56:58,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-02-23 17:56:58,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539107476] [2021-02-23 17:56:58,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-02-23 17:56:58,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:56:58,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-02-23 17:56:58,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=606, Unknown=0, NotChecked=0, Total=992 [2021-02-23 17:56:58,573 INFO L87 Difference]: Start difference. First operand 156 states and 157 transitions. Second operand 32 states. [2021-02-23 17:57:00,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:57:00,948 INFO L93 Difference]: Finished difference Result 156 states and 157 transitions. [2021-02-23 17:57:00,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-02-23 17:57:00,949 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 232 [2021-02-23 17:57:00,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:57:00,950 INFO L225 Difference]: With dead ends: 156 [2021-02-23 17:57:00,950 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 17:57:00,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1206, Invalid=2454, Unknown=0, NotChecked=0, Total=3660 [2021-02-23 17:57:00,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 17:57:00,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 17:57:00,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 17:57:00,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 17:57:00,952 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 232 [2021-02-23 17:57:00,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:57:00,952 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 17:57:00,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2021-02-23 17:57:00,953 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 17:57:00,953 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 17:57:00,953 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-02-23 17:57:00,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 17:57:01,329 WARN L202 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 117 [2021-02-23 17:57:01,621 WARN L202 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 117 [2021-02-23 17:57:01,874 WARN L202 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 113 [2021-02-23 17:57:02,111 WARN L202 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 113 [2021-02-23 17:57:02,421 WARN L202 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 117 [2021-02-23 17:57:03,583 WARN L202 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 210 DAG size of output: 161 [2021-02-23 17:57:04,957 WARN L202 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 210 DAG size of output: 161 [2021-02-23 17:57:06,302 WARN L202 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 205 DAG size of output: 160 [2021-02-23 17:57:07,553 WARN L202 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 205 DAG size of output: 160 [2021-02-23 17:57:09,153 WARN L202 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 256 DAG size of output: 208 [2021-02-23 17:57:09,159 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-02-23 17:57:09,159 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-02-23 17:57:09,159 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-02-23 17:57:09,159 INFO L192 CegarLoopUtils]: At program point L4-3(line 4) the Hoare annotation is: true [2021-02-23 17:57:09,160 INFO L192 CegarLoopUtils]: At program point L4-4(line 4) the Hoare annotation is: true [2021-02-23 17:57:09,160 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 17:57:09,160 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 17:57:09,160 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 4) the Hoare annotation is: true [2021-02-23 17:57:09,160 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 17:57:09,161 INFO L192 CegarLoopUtils]: At program point L4(line 4) the Hoare annotation is: true [2021-02-23 17:57:09,161 INFO L192 CegarLoopUtils]: At program point L4-1(line 4) the Hoare annotation is: true [2021-02-23 17:57:09,161 INFO L192 CegarLoopUtils]: At program point L4-2(line 4) the Hoare annotation is: true [2021-02-23 17:57:09,161 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-23 17:57:09,161 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-23 17:57:09,161 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 17:57:09,161 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 17:57:09,161 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-23 17:57:09,162 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) the Hoare annotation is: false [2021-02-23 17:57:09,162 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2021-02-23 17:57:09,162 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 11 17) the Hoare annotation is: (<= 25 main_~input~0) [2021-02-23 17:57:09,162 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: false [2021-02-23 17:57:09,162 INFO L185 CegarLoopUtils]: At program point L14(lines 14 16) the Hoare annotation is: (and (<= 25 main_~input~0) (<= main_~result~0 25) (< 24 main_~result~0)) [2021-02-23 17:57:09,162 INFO L185 CegarLoopUtils]: At program point L15-1(line 15) the Hoare annotation is: false [2021-02-23 17:57:09,162 INFO L185 CegarLoopUtils]: At program point L13(line 13) the Hoare annotation is: (and (<= 25 main_~input~0) (<= main_~input~0 25)) [2021-02-23 17:57:09,162 INFO L185 CegarLoopUtils]: At program point L13-1(line 13) the Hoare annotation is: (and (<= |main_#t~ret8| 25) (<= 25 main_~input~0) (<= 25 |main_#t~ret8|)) [2021-02-23 17:57:09,162 INFO L185 CegarLoopUtils]: At program point L14-2(lines 11 17) the Hoare annotation is: (<= 25 main_~input~0) [2021-02-23 17:57:09,162 INFO L185 CegarLoopUtils]: At program point L13-2(line 13) the Hoare annotation is: (and (<= |main_#t~ret8| 25) (<= 25 main_~input~0) (<= 25 |main_#t~ret8|)) [2021-02-23 17:57:09,163 INFO L185 CegarLoopUtils]: At program point L13-3(line 13) the Hoare annotation is: (and (<= |main_#t~ret8| 25) (<= 25 main_~input~0) (<= main_~result~0 25) (< 24 main_~result~0) (<= 25 |main_#t~ret8|)) [2021-02-23 17:57:09,163 INFO L185 CegarLoopUtils]: At program point idFINAL(lines 6 9) the Hoare annotation is: (let ((.cse0 (= |id_#in~x| id_~x))) (or (and (<= 7 |id_#res|) .cse0 (<= |id_#res| 7) (<= 7 |id_#in~x|) (<= |id_#in~x| 7)) (and (<= |id_#in~x| 11) (<= 11 |id_#in~x|) .cse0 (<= |id_#res| 11) (<= 11 |id_#res|)) (and .cse0 (<= |id_#in~x| 10) (<= 10 |id_#in~x|) (<= 10 |id_#res|) (<= |id_#res| 10)) (and (<= |id_#res| 16) .cse0 (<= 16 |id_#in~x|) (<= |id_#in~x| 16) (<= 16 |id_#res|)) (and (<= 15 |id_#res|) (<= 15 |id_#in~x|) .cse0 (<= |id_#in~x| 15) (<= |id_#res| 15)) (and (<= 2 |id_#res|) .cse0 (<= |id_#res| 2) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and (<= |id_#res| 3) (<= 3 |id_#in~x|) .cse0 (<= |id_#in~x| 3) (<= 3 |id_#res|)) (and (<= 9 |id_#res|) .cse0 (<= |id_#in~x| 9) (<= |id_#res| 9) (<= 9 |id_#in~x|)) (and (<= 13 |id_#in~x|) (<= |id_#in~x| 13) .cse0 (<= |id_#res| 13) (<= 13 |id_#res|)) (and .cse0 (<= 22 |id_#res|) (<= |id_#res| 22) (<= |id_#in~x| 22) (<= 22 |id_#in~x|)) (and (<= |id_#res| 4) (<= 4 |id_#res|) .cse0 (<= |id_#in~x| 4) (<= 4 |id_#in~x|)) (and (<= |id_#res| 6) .cse0 (<= 6 |id_#in~x|) (<= 6 |id_#res|) (<= |id_#in~x| 6)) (and (<= |id_#res| 8) .cse0 (<= 8 |id_#in~x|) (<= 8 |id_#res|) (<= |id_#in~x| 8)) (and .cse0 (<= |id_#in~x| 24) (<= |id_#res| 24) (<= 24 |id_#in~x|) (<= 24 |id_#res|)) (and (<= 19 |id_#res|) (<= |id_#res| 19) .cse0 (<= |id_#in~x| 19) (<= 19 |id_#in~x|)) (and (<= 1 |id_#in~x|) .cse0 (<= |id_#res| 1) (<= 1 |id_#res|) (<= |id_#in~x| 1)) (and .cse0 (<= 26 |id_#in~x|)) (and (<= 5 |id_#res|) (<= 5 |id_#in~x|) (<= |id_#in~x| 5) .cse0 (<= |id_#res| 5)) (and (<= |id_#res| 23) .cse0 (<= 23 |id_#in~x|) (<= |id_#in~x| 23) (<= 23 |id_#res|)) (and (<= |id_#res| 17) (<= 17 |id_#res|) .cse0 (<= |id_#in~x| 17) (<= 17 |id_#in~x|)) (and (<= 25 |id_#in~x|) .cse0 (<= |id_#res| 25) (<= 25 |id_#res|)) (and .cse0 (<= |id_#in~x| 20) (<= 20 |id_#res|) (<= |id_#res| 20) (<= 20 |id_#in~x|)) (and (<= |id_#res| 14) (<= 14 |id_#in~x|) .cse0 (<= 14 |id_#res|) (<= |id_#in~x| 14)) (and (<= 12 |id_#in~x|) .cse0 (<= |id_#res| 12) (<= |id_#in~x| 12) (<= 12 |id_#res|)) (and .cse0 (= |id_#res| 0) (= |id_#in~x| 0)) (and (<= |id_#res| 18) (<= 18 |id_#in~x|) .cse0 (<= 18 |id_#res|) (<= |id_#in~x| 18)) (and (<= |id_#in~x| 21) (<= 21 |id_#in~x|) (<= 21 |id_#res|) .cse0 (<= |id_#res| 21)))) [2021-02-23 17:57:09,164 INFO L185 CegarLoopUtils]: At program point idEXIT(lines 6 9) the Hoare annotation is: (let ((.cse0 (= |id_#in~x| id_~x))) (or (and (<= 7 |id_#res|) .cse0 (<= |id_#res| 7) (<= 7 |id_#in~x|) (<= |id_#in~x| 7)) (and (<= |id_#in~x| 11) (<= 11 |id_#in~x|) .cse0 (<= |id_#res| 11) (<= 11 |id_#res|)) (and .cse0 (<= |id_#in~x| 10) (<= 10 |id_#in~x|) (<= 10 |id_#res|) (<= |id_#res| 10)) (and (<= |id_#res| 16) .cse0 (<= 16 |id_#in~x|) (<= |id_#in~x| 16) (<= 16 |id_#res|)) (and (<= 15 |id_#res|) (<= 15 |id_#in~x|) .cse0 (<= |id_#in~x| 15) (<= |id_#res| 15)) (and (<= 2 |id_#res|) .cse0 (<= |id_#res| 2) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and (<= |id_#res| 3) (<= 3 |id_#in~x|) .cse0 (<= |id_#in~x| 3) (<= 3 |id_#res|)) (and (<= 9 |id_#res|) .cse0 (<= |id_#in~x| 9) (<= |id_#res| 9) (<= 9 |id_#in~x|)) (and (<= 13 |id_#in~x|) (<= |id_#in~x| 13) .cse0 (<= |id_#res| 13) (<= 13 |id_#res|)) (and .cse0 (<= 22 |id_#res|) (<= |id_#res| 22) (<= |id_#in~x| 22) (<= 22 |id_#in~x|)) (and (<= |id_#res| 4) (<= 4 |id_#res|) .cse0 (<= |id_#in~x| 4) (<= 4 |id_#in~x|)) (and (<= |id_#res| 6) .cse0 (<= 6 |id_#in~x|) (<= 6 |id_#res|) (<= |id_#in~x| 6)) (and (<= |id_#res| 8) .cse0 (<= 8 |id_#in~x|) (<= 8 |id_#res|) (<= |id_#in~x| 8)) (and .cse0 (<= |id_#in~x| 24) (<= |id_#res| 24) (<= 24 |id_#in~x|) (<= 24 |id_#res|)) (and (<= 19 |id_#res|) (<= |id_#res| 19) .cse0 (<= |id_#in~x| 19) (<= 19 |id_#in~x|)) (and (<= 1 |id_#in~x|) .cse0 (<= |id_#res| 1) (<= 1 |id_#res|) (<= |id_#in~x| 1)) (and .cse0 (<= 26 |id_#in~x|)) (and (<= 5 |id_#res|) (<= 5 |id_#in~x|) (<= |id_#in~x| 5) .cse0 (<= |id_#res| 5)) (and (<= |id_#res| 23) .cse0 (<= 23 |id_#in~x|) (<= |id_#in~x| 23) (<= 23 |id_#res|)) (and (<= |id_#res| 17) (<= 17 |id_#res|) .cse0 (<= |id_#in~x| 17) (<= 17 |id_#in~x|)) (and (<= 25 |id_#in~x|) .cse0 (<= |id_#res| 25) (<= 25 |id_#res|)) (and .cse0 (<= |id_#in~x| 20) (<= 20 |id_#res|) (<= |id_#res| 20) (<= 20 |id_#in~x|)) (and (<= |id_#res| 14) (<= 14 |id_#in~x|) .cse0 (<= 14 |id_#res|) (<= |id_#in~x| 14)) (and (<= 12 |id_#in~x|) .cse0 (<= |id_#res| 12) (<= |id_#in~x| 12) (<= 12 |id_#res|)) (and .cse0 (= |id_#res| 0) (= |id_#in~x| 0)) (and (<= |id_#res| 18) (<= 18 |id_#in~x|) .cse0 (<= 18 |id_#res|) (<= |id_#in~x| 18)) (and (<= |id_#in~x| 21) (<= 21 |id_#in~x|) (<= 21 |id_#res|) .cse0 (<= |id_#res| 21)))) [2021-02-23 17:57:09,164 INFO L185 CegarLoopUtils]: At program point L8(line 8) the Hoare annotation is: (= |id_#in~x| id_~x) [2021-02-23 17:57:09,164 INFO L192 CegarLoopUtils]: At program point idENTRY(lines 6 9) the Hoare annotation is: true [2021-02-23 17:57:09,164 INFO L185 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (= |id_#in~x| id_~x) [2021-02-23 17:57:09,165 INFO L185 CegarLoopUtils]: At program point L8-1(line 8) the Hoare annotation is: (and (let ((.cse0 (= |id_#in~x| id_~x))) (or (and .cse0 (<= |id_#t~ret7| 24) (<= 24 |id_#t~ret7|)) (and .cse0 (<= 26 |id_#in~x|)) (and .cse0 (<= |id_#in~x| 24)))) (or (and (<= 12 |id_#in~x|) (<= |id_#in~x| 12) (<= |id_#t~ret7| 11) (<= 11 |id_#t~ret7|)) (and (<= 13 |id_#in~x|) (<= |id_#in~x| 13) (<= |id_#t~ret7| 12) (<= 12 |id_#t~ret7|)) (and (<= |id_#in~x| 10) (<= 9 |id_#t~ret7|) (<= 10 |id_#in~x|) (<= |id_#t~ret7| 9)) (and (<= |id_#in~x| 9) (<= 8 |id_#t~ret7|) (<= |id_#t~ret7| 8) (<= 9 |id_#in~x|)) (and (<= 3 |id_#in~x|) (<= |id_#t~ret7| 2) (<= 2 |id_#t~ret7|) (<= |id_#in~x| 3)) (and (<= 5 |id_#t~ret7|) (<= |id_#t~ret7| 5) (<= 6 |id_#in~x|) (<= |id_#in~x| 6)) (and (<= |id_#t~ret7| 16) (<= 16 |id_#t~ret7|) (<= |id_#in~x| 17) (<= 17 |id_#in~x|)) (and (<= 16 |id_#in~x|) (<= |id_#in~x| 16) (<= 15 |id_#t~ret7|) (<= |id_#t~ret7| 15)) (and (<= 18 |id_#t~ret7|) (<= |id_#in~x| 19) (<= |id_#t~ret7| 18) (<= 19 |id_#in~x|)) (and (<= 14 |id_#in~x|) (<= |id_#t~ret7| 13) (<= 13 |id_#t~ret7|) (<= |id_#in~x| 14)) (<= 25 |id_#in~x|) (and (<= |id_#t~ret7| 23) (<= 23 |id_#t~ret7|) (<= 24 |id_#in~x|)) (and (<= 5 |id_#in~x|) (<= |id_#in~x| 5) (<= 4 |id_#t~ret7|) (<= |id_#t~ret7| 4)) (and (<= 21 |id_#t~ret7|) (<= |id_#t~ret7| 21) (<= |id_#in~x| 22) (<= 22 |id_#in~x|)) (and (<= 15 |id_#in~x|) (<= |id_#t~ret7| 14) (<= |id_#in~x| 15) (<= 14 |id_#t~ret7|)) (and (<= |id_#t~ret7| 1) (<= 1 |id_#t~ret7|) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and (<= 22 |id_#t~ret7|) (<= 23 |id_#in~x|) (<= |id_#in~x| 23) (<= |id_#t~ret7| 22)) (and (<= 18 |id_#in~x|) (<= |id_#t~ret7| 17) (<= |id_#in~x| 18) (<= 17 |id_#t~ret7|)) (and (<= |id_#t~ret7| 10) (<= 10 |id_#t~ret7|) (<= |id_#in~x| 11) (<= 11 |id_#in~x|)) (and (<= |id_#in~x| 21) (<= 21 |id_#in~x|) (<= |id_#t~ret7| 20) (<= 20 |id_#t~ret7|)) (and (<= 1 |id_#in~x|) (= |id_#t~ret7| 0) (<= |id_#in~x| 1)) (and (<= 8 |id_#in~x|) (<= |id_#t~ret7| 7) (<= 7 |id_#t~ret7|) (<= |id_#in~x| 8)) (and (<= |id_#t~ret7| 6) (<= 6 |id_#t~ret7|) (<= 7 |id_#in~x|) (<= |id_#in~x| 7)) (and (<= |id_#in~x| 4) (<= 3 |id_#t~ret7|) (<= |id_#t~ret7| 3) (<= 4 |id_#in~x|)) (and (<= |id_#t~ret7| 19) (<= |id_#in~x| 20) (<= 20 |id_#in~x|) (<= 19 |id_#t~ret7|)))) [2021-02-23 17:57:09,165 INFO L185 CegarLoopUtils]: At program point L7-1(line 7) the Hoare annotation is: (and (= |id_#in~x| id_~x) (= |id_#in~x| 0)) [2021-02-23 17:57:09,165 INFO L185 CegarLoopUtils]: At program point L8-2(line 8) the Hoare annotation is: (and (let ((.cse0 (= |id_#in~x| id_~x))) (or (and .cse0 (<= |id_#t~ret7| 24) (<= 24 |id_#t~ret7|)) (and .cse0 (<= 26 |id_#in~x|)) (and .cse0 (<= |id_#in~x| 24)))) (or (and (<= 12 |id_#in~x|) (<= |id_#in~x| 12) (<= |id_#t~ret7| 11) (<= 11 |id_#t~ret7|)) (and (<= 13 |id_#in~x|) (<= |id_#in~x| 13) (<= |id_#t~ret7| 12) (<= 12 |id_#t~ret7|)) (and (<= |id_#in~x| 10) (<= 9 |id_#t~ret7|) (<= 10 |id_#in~x|) (<= |id_#t~ret7| 9)) (and (<= |id_#in~x| 9) (<= 8 |id_#t~ret7|) (<= |id_#t~ret7| 8) (<= 9 |id_#in~x|)) (and (<= 3 |id_#in~x|) (<= |id_#t~ret7| 2) (<= 2 |id_#t~ret7|) (<= |id_#in~x| 3)) (and (<= 5 |id_#t~ret7|) (<= |id_#t~ret7| 5) (<= 6 |id_#in~x|) (<= |id_#in~x| 6)) (and (<= |id_#t~ret7| 16) (<= 16 |id_#t~ret7|) (<= |id_#in~x| 17) (<= 17 |id_#in~x|)) (and (<= 16 |id_#in~x|) (<= |id_#in~x| 16) (<= 15 |id_#t~ret7|) (<= |id_#t~ret7| 15)) (and (<= 18 |id_#t~ret7|) (<= |id_#in~x| 19) (<= |id_#t~ret7| 18) (<= 19 |id_#in~x|)) (and (<= 14 |id_#in~x|) (<= |id_#t~ret7| 13) (<= 13 |id_#t~ret7|) (<= |id_#in~x| 14)) (<= 25 |id_#in~x|) (and (<= |id_#t~ret7| 23) (<= 23 |id_#t~ret7|) (<= 24 |id_#in~x|)) (and (<= 5 |id_#in~x|) (<= |id_#in~x| 5) (<= 4 |id_#t~ret7|) (<= |id_#t~ret7| 4)) (and (<= 21 |id_#t~ret7|) (<= |id_#t~ret7| 21) (<= |id_#in~x| 22) (<= 22 |id_#in~x|)) (and (<= 15 |id_#in~x|) (<= |id_#t~ret7| 14) (<= |id_#in~x| 15) (<= 14 |id_#t~ret7|)) (and (<= |id_#t~ret7| 1) (<= 1 |id_#t~ret7|) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and (<= 22 |id_#t~ret7|) (<= 23 |id_#in~x|) (<= |id_#in~x| 23) (<= |id_#t~ret7| 22)) (and (<= 18 |id_#in~x|) (<= |id_#t~ret7| 17) (<= |id_#in~x| 18) (<= 17 |id_#t~ret7|)) (and (<= |id_#t~ret7| 10) (<= 10 |id_#t~ret7|) (<= |id_#in~x| 11) (<= 11 |id_#in~x|)) (and (<= |id_#in~x| 21) (<= 21 |id_#in~x|) (<= |id_#t~ret7| 20) (<= 20 |id_#t~ret7|)) (and (<= 1 |id_#in~x|) (= |id_#t~ret7| 0) (<= |id_#in~x| 1)) (and (<= 8 |id_#in~x|) (<= |id_#t~ret7| 7) (<= 7 |id_#t~ret7|) (<= |id_#in~x| 8)) (and (<= |id_#t~ret7| 6) (<= 6 |id_#t~ret7|) (<= 7 |id_#in~x|) (<= |id_#in~x| 7)) (and (<= |id_#in~x| 4) (<= 3 |id_#t~ret7|) (<= |id_#t~ret7| 3) (<= 4 |id_#in~x|)) (and (<= |id_#t~ret7| 19) (<= |id_#in~x| 20) (<= 20 |id_#in~x|) (<= 19 |id_#t~ret7|)))) [2021-02-23 17:57:09,166 INFO L185 CegarLoopUtils]: At program point L8-3(line 8) the Hoare annotation is: (let ((.cse0 (= |id_#in~x| id_~x))) (or (and (<= 25 |id_#in~x|) .cse0 (<= |id_#res| 25) (<= |id_#t~ret7| 24) (<= 24 |id_#t~ret7|) (<= 25 |id_#res|)) (and (<= 1 |id_#in~x|) .cse0 (<= |id_#res| 1) (= |id_#t~ret7| 0) (<= 1 |id_#res|) (<= |id_#in~x| 1)) (and (<= |id_#res| 8) .cse0 (<= 8 |id_#in~x|) (<= |id_#t~ret7| 7) (<= 8 |id_#res|) (<= 7 |id_#t~ret7|) (<= |id_#in~x| 8)) (and (<= 15 |id_#res|) (<= 15 |id_#in~x|) (<= |id_#t~ret7| 14) .cse0 (<= |id_#in~x| 15) (<= 14 |id_#t~ret7|) (<= |id_#res| 15)) (and (<= |id_#in~x| 21) (<= 21 |id_#in~x|) (<= 21 |id_#res|) .cse0 (<= |id_#t~ret7| 20) (<= |id_#res| 21) (<= 20 |id_#t~ret7|)) (and (<= |id_#res| 4) (<= 4 |id_#res|) .cse0 (<= |id_#in~x| 4) (<= 3 |id_#t~ret7|) (<= |id_#t~ret7| 3) (<= 4 |id_#in~x|)) (and (<= 9 |id_#res|) .cse0 (<= |id_#in~x| 9) (<= |id_#res| 9) (<= 8 |id_#t~ret7|) (<= |id_#t~ret7| 8) (<= 9 |id_#in~x|)) (and (<= |id_#t~ret7| 23) .cse0 (<= |id_#in~x| 24) (<= |id_#res| 24) (<= 23 |id_#t~ret7|) (<= 24 |id_#in~x|) (<= 24 |id_#res|)) (and (<= |id_#res| 3) (<= 3 |id_#in~x|) .cse0 (<= |id_#t~ret7| 2) (<= 2 |id_#t~ret7|) (<= |id_#in~x| 3) (<= 3 |id_#res|)) (and .cse0 (<= |id_#in~x| 10) (<= 9 |id_#t~ret7|) (<= 10 |id_#in~x|) (<= |id_#t~ret7| 9) (<= 10 |id_#res|) (<= |id_#res| 10)) (and (<= 12 |id_#in~x|) .cse0 (<= |id_#res| 12) (<= |id_#in~x| 12) (<= 12 |id_#res|) (<= |id_#t~ret7| 11) (<= 11 |id_#t~ret7|)) (and (<= 21 |id_#t~ret7|) (<= |id_#t~ret7| 21) .cse0 (<= 22 |id_#res|) (<= |id_#res| 22) (<= |id_#in~x| 22) (<= 22 |id_#in~x|)) (and (<= |id_#res| 18) (<= 18 |id_#in~x|) (<= |id_#t~ret7| 17) .cse0 (<= 18 |id_#res|) (<= |id_#in~x| 18) (<= 17 |id_#t~ret7|)) (and (<= 19 |id_#res|) (<= |id_#res| 19) .cse0 (<= 18 |id_#t~ret7|) (<= |id_#in~x| 19) (<= |id_#t~ret7| 18) (<= 19 |id_#in~x|)) (and (<= |id_#t~ret7| 10) (<= 10 |id_#t~ret7|) (<= |id_#in~x| 11) (<= 11 |id_#in~x|) .cse0 (<= |id_#res| 11) (<= 11 |id_#res|)) (and (<= 5 |id_#res|) (<= 5 |id_#in~x|) (<= |id_#in~x| 5) .cse0 (<= |id_#res| 5) (<= 4 |id_#t~ret7|) (<= |id_#t~ret7| 4)) (and (<= 5 |id_#t~ret7|) (<= |id_#res| 6) (<= |id_#t~ret7| 5) .cse0 (<= 6 |id_#in~x|) (<= 6 |id_#res|) (<= |id_#in~x| 6)) (and (<= 22 |id_#t~ret7|) (<= |id_#res| 23) .cse0 (<= 23 |id_#in~x|) (<= |id_#in~x| 23) (<= |id_#t~ret7| 22) (<= 23 |id_#res|)) (and .cse0 (<= 26 |id_#in~x|)) (and (<= |id_#t~ret7| 6) (<= 7 |id_#res|) .cse0 (<= |id_#res| 7) (<= 6 |id_#t~ret7|) (<= 7 |id_#in~x|) (<= |id_#in~x| 7)) (and (<= |id_#t~ret7| 19) .cse0 (<= |id_#in~x| 20) (<= 20 |id_#res|) (<= |id_#res| 20) (<= 20 |id_#in~x|) (<= 19 |id_#t~ret7|)) (and (<= |id_#res| 17) (<= 17 |id_#res|) .cse0 (<= |id_#t~ret7| 16) (<= 16 |id_#t~ret7|) (<= |id_#in~x| 17) (<= 17 |id_#in~x|)) (and (<= 13 |id_#in~x|) (<= |id_#in~x| 13) (<= |id_#t~ret7| 12) .cse0 (<= |id_#res| 13) (<= 13 |id_#res|) (<= 12 |id_#t~ret7|)) (and (<= |id_#res| 14) (<= 14 |id_#in~x|) (<= |id_#t~ret7| 13) .cse0 (<= 13 |id_#t~ret7|) (<= 14 |id_#res|) (<= |id_#in~x| 14)) (and (<= |id_#res| 16) .cse0 (<= 16 |id_#in~x|) (<= |id_#in~x| 16) (<= 16 |id_#res|) (<= 15 |id_#t~ret7|) (<= |id_#t~ret7| 15)) (and (<= 2 |id_#res|) .cse0 (<= |id_#t~ret7| 1) (<= |id_#res| 2) (<= 1 |id_#t~ret7|) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)))) [2021-02-23 17:57:09,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:57:09 BoogieIcfgContainer [2021-02-23 17:57:09,194 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 17:57:09,195 INFO L168 Benchmark]: Toolchain (without parser) took 66741.79 ms. Allocated memory was 153.1 MB in the beginning and 679.5 MB in the end (delta: 526.4 MB). Free memory was 129.6 MB in the beginning and 581.1 MB in the end (delta: -451.5 MB). Peak memory consumption was 404.6 MB. Max. memory is 8.0 GB. [2021-02-23 17:57:09,195 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 153.1 MB. Free memory is still 127.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:57:09,195 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.16 ms. Allocated memory is still 153.1 MB. Free memory was 128.5 MB in the beginning and 119.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 17:57:09,196 INFO L168 Benchmark]: Boogie Preprocessor took 33.53 ms. Allocated memory is still 153.1 MB. Free memory was 119.5 MB in the beginning and 118.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 17:57:09,198 INFO L168 Benchmark]: RCFGBuilder took 415.59 ms. Allocated memory is still 153.1 MB. Free memory was 118.1 MB in the beginning and 136.7 MB in the end (delta: -18.6 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. [2021-02-23 17:57:09,198 INFO L168 Benchmark]: TraceAbstraction took 66046.88 ms. Allocated memory was 153.1 MB in the beginning and 679.5 MB in the end (delta: 526.4 MB). Free memory was 136.3 MB in the beginning and 581.1 MB in the end (delta: -444.8 MB). Peak memory consumption was 410.4 MB. Max. memory is 8.0 GB. [2021-02-23 17:57:09,212 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 153.1 MB. Free memory is still 127.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 228.16 ms. Allocated memory is still 153.1 MB. Free memory was 128.5 MB in the beginning and 119.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.53 ms. Allocated memory is still 153.1 MB. Free memory was 119.5 MB in the beginning and 118.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 415.59 ms. Allocated memory is still 153.1 MB. Free memory was 118.1 MB in the beginning and 136.7 MB in the end (delta: -18.6 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 66046.88 ms. Allocated memory was 153.1 MB in the beginning and 679.5 MB in the end (delta: 526.4 MB). Free memory was 136.3 MB in the beginning and 581.1 MB in the end (delta: -444.8 MB). Peak memory consumption was 410.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 25 <= input - ProcedureContractResult [Line: 6]: Procedure Contract for id Derived contract for procedure id: (((((((((((((((((((((((((((((7 <= \result && \old(x) == x) && \result <= 7) && 7 <= \old(x)) && \old(x) <= 7) || ((((\old(x) <= 11 && 11 <= \old(x)) && \old(x) == x) && \result <= 11) && 11 <= \result)) || ((((\old(x) == x && \old(x) <= 10) && 10 <= \old(x)) && 10 <= \result) && \result <= 10)) || ((((\result <= 16 && \old(x) == x) && 16 <= \old(x)) && \old(x) <= 16) && 16 <= \result)) || ((((15 <= \result && 15 <= \old(x)) && \old(x) == x) && \old(x) <= 15) && \result <= 15)) || ((((2 <= \result && \old(x) == x) && \result <= 2) && 2 <= \old(x)) && \old(x) <= 2)) || ((((\result <= 3 && 3 <= \old(x)) && \old(x) == x) && \old(x) <= 3) && 3 <= \result)) || ((((9 <= \result && \old(x) == x) && \old(x) <= 9) && \result <= 9) && 9 <= \old(x))) || ((((13 <= \old(x) && \old(x) <= 13) && \old(x) == x) && \result <= 13) && 13 <= \result)) || ((((\old(x) == x && 22 <= \result) && \result <= 22) && \old(x) <= 22) && 22 <= \old(x))) || ((((\result <= 4 && 4 <= \result) && \old(x) == x) && \old(x) <= 4) && 4 <= \old(x))) || ((((\result <= 6 && \old(x) == x) && 6 <= \old(x)) && 6 <= \result) && \old(x) <= 6)) || ((((\result <= 8 && \old(x) == x) && 8 <= \old(x)) && 8 <= \result) && \old(x) <= 8)) || ((((\old(x) == x && \old(x) <= 24) && \result <= 24) && 24 <= \old(x)) && 24 <= \result)) || ((((19 <= \result && \result <= 19) && \old(x) == x) && \old(x) <= 19) && 19 <= \old(x))) || ((((1 <= \old(x) && \old(x) == x) && \result <= 1) && 1 <= \result) && \old(x) <= 1)) || (\old(x) == x && 26 <= \old(x))) || ((((5 <= \result && 5 <= \old(x)) && \old(x) <= 5) && \old(x) == x) && \result <= 5)) || ((((\result <= 23 && \old(x) == x) && 23 <= \old(x)) && \old(x) <= 23) && 23 <= \result)) || ((((\result <= 17 && 17 <= \result) && \old(x) == x) && \old(x) <= 17) && 17 <= \old(x))) || (((25 <= \old(x) && \old(x) == x) && \result <= 25) && 25 <= \result)) || ((((\old(x) == x && \old(x) <= 20) && 20 <= \result) && \result <= 20) && 20 <= \old(x))) || ((((\result <= 14 && 14 <= \old(x)) && \old(x) == x) && 14 <= \result) && \old(x) <= 14)) || ((((12 <= \old(x) && \old(x) == x) && \result <= 12) && \old(x) <= 12) && 12 <= \result)) || ((\old(x) == x && \result == 0) && \old(x) == 0)) || ((((\result <= 18 && 18 <= \old(x)) && \old(x) == x) && 18 <= \result) && \old(x) <= 18)) || ((((\old(x) <= 21 && 21 <= \old(x)) && 21 <= \result) && \old(x) == x) && \result <= 21) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 57.6s, OverallIterations: 27, TraceHistogramMax: 27, AutomataDifference: 34.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 849 SDtfs, 3316 SDslu, 2356 SDs, 0 SdLazy, 11030 SolverSat, 911 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1778 GetRequests, 811 SyntacticMatches, 0 SemanticMatches, 967 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8984 ImplicationChecksByTransitivity, 29.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=156occurred in iteration=26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 27 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 34 LocationsWithAnnotation, 43 PreInvPairs, 552 NumberOfFragments, 2175 HoareAnnotationTreeSize, 43 FomulaSimplifications, 11251 FormulaSimplificationTreeSizeReduction, 1.4s HoareSimplificationTime, 34 FomulaSimplificationsInter, 9371 FormulaSimplificationTreeSizeReductionInter, 6.7s 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...