/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/id2_b5_o10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 22:56:06,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 22:56:06,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 22:56:06,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 22:56:06,883 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 22:56:06,908 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 22:56:06,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 22:56:06,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 22:56:06,914 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 22:56:06,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 22:56:06,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 22:56:06,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 22:56:06,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 22:56:06,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 22:56:06,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 22:56:06,917 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 22:56:06,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 22:56:06,917 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 22:56:06,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 22:56:06,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 22:56:06,918 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 22:56:06,918 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 22:56:06,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 22:56:06,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:56:06,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 22:56:06,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 22:56:06,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 22:56:06,920 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 22:56:07,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 22:56:07,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 22:56:07,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 22:56:07,374 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 22:56:07,374 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 22:56:07,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_b5_o10.c [2021-02-23 22:56:07,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb5aa2c85/6b004ce564234f21ad8c63e238295d40/FLAG7e0ee7b83 [2021-02-23 22:56:08,231 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 22:56:08,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id2_b5_o10.c [2021-02-23 22:56:08,246 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb5aa2c85/6b004ce564234f21ad8c63e238295d40/FLAG7e0ee7b83 [2021-02-23 22:56:08,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb5aa2c85/6b004ce564234f21ad8c63e238295d40 [2021-02-23 22:56:08,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 22:56:08,588 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 22:56:08,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 22:56:08,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 22:56:08,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 22:56:08,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:56:08" (1/1) ... [2021-02-23 22:56:08,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47b17ff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:08, skipping insertion in model container [2021-02-23 22:56:08,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:56:08" (1/1) ... [2021-02-23 22:56:08,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 22:56:08,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 22:56:08,795 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/id2_b5_o10.c[773,786] [2021-02-23 22:56:08,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:56:08,817 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 22:56:08,839 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/id2_b5_o10.c[773,786] [2021-02-23 22:56:08,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:56:08,864 INFO L208 MainTranslator]: Completed translation [2021-02-23 22:56:08,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:08 WrapperNode [2021-02-23 22:56:08,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 22:56:08,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 22:56:08,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 22:56:08,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 22:56:08,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:08" (1/1) ... [2021-02-23 22:56:08,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:08" (1/1) ... [2021-02-23 22:56:08,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:08" (1/1) ... [2021-02-23 22:56:08,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:08" (1/1) ... [2021-02-23 22:56:08,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:08" (1/1) ... [2021-02-23 22:56:08,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:08" (1/1) ... [2021-02-23 22:56:08,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:08" (1/1) ... [2021-02-23 22:56:08,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 22:56:08,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 22:56:08,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 22:56:08,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 22:56:08,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:08" (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 22:56:09,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 22:56:09,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 22:56:09,016 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 22:56:09,016 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-02-23 22:56:09,016 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2021-02-23 22:56:09,016 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 22:56:09,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-23 22:56:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 22:56:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 22:56:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 22:56:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 22:56:09,017 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-02-23 22:56:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2021-02-23 22:56:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 22:56:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 22:56:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 22:56:09,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 22:56:09,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 22:56:09,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 22:56:09,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 22:56:09,543 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 22:56:09,543 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 22:56:09,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:56:09 BoogieIcfgContainer [2021-02-23 22:56:09,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 22:56:09,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 22:56:09,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 22:56:09,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 22:56:09,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:56:08" (1/3) ... [2021-02-23 22:56:09,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ba5199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:56:09, skipping insertion in model container [2021-02-23 22:56:09,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:56:08" (2/3) ... [2021-02-23 22:56:09,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ba5199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:56:09, skipping insertion in model container [2021-02-23 22:56:09,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:56:09" (3/3) ... [2021-02-23 22:56:09,558 INFO L111 eAbstractionObserver]: Analyzing ICFG id2_b5_o10.c [2021-02-23 22:56:09,566 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 22:56:09,572 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 22:56:09,595 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 22:56:09,623 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 22:56:09,623 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 22:56:09,623 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 22:56:09,623 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 22:56:09,624 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 22:56:09,624 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 22:56:09,624 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 22:56:09,624 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 22:56:09,642 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2021-02-23 22:56:09,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-23 22:56:09,653 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:09,654 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 22:56:09,654 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:09,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:09,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1880205997, now seen corresponding path program 1 times [2021-02-23 22:56:09,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:09,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221756901] [2021-02-23 22:56:09,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:10,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:10,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:10,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:10,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:10,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:10,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 22:56:10,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:10,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:10,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:10,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:10,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:10,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:10,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:10,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:10,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:10,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:10,355 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 22:56:10,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221756901] [2021-02-23 22:56:10,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:56:10,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 22:56:10,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364441062] [2021-02-23 22:56:10,369 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 22:56:10,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:10,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 22:56:10,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 22:56:10,391 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 6 states. [2021-02-23 22:56:10,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:10,885 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2021-02-23 22:56:10,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 22:56:10,891 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-02-23 22:56:10,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:10,908 INFO L225 Difference]: With dead ends: 60 [2021-02-23 22:56:10,909 INFO L226 Difference]: Without dead ends: 44 [2021-02-23 22:56:10,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-23 22:56:10,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-02-23 22:56:10,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-02-23 22:56:10,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-02-23 22:56:10,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-02-23 22:56:10,991 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 24 [2021-02-23 22:56:10,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:10,992 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-02-23 22:56:10,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 22:56:10,992 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-02-23 22:56:10,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-23 22:56:10,998 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:10,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:56:10,999 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 22:56:10,999 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:11,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:11,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1658084422, now seen corresponding path program 1 times [2021-02-23 22:56:11,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:11,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515321986] [2021-02-23 22:56:11,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:11,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:11,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:11,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:11,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:11,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:11,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:11,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:11,254 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:56:11,256 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:56:11,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:11,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:11,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:11,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:11,338 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 22:56:11,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515321986] [2021-02-23 22:56:11,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:56:11,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 22:56:11,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291772029] [2021-02-23 22:56:11,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 22:56:11,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:11,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 22:56:11,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 22:56:11,344 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 6 states. [2021-02-23 22:56:11,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:11,744 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2021-02-23 22:56:11,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 22:56:11,745 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2021-02-23 22:56:11,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:11,747 INFO L225 Difference]: With dead ends: 71 [2021-02-23 22:56:11,748 INFO L226 Difference]: Without dead ends: 52 [2021-02-23 22:56:11,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-23 22:56:11,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-23 22:56:11,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2021-02-23 22:56:11,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-02-23 22:56:11,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2021-02-23 22:56:11,770 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 33 [2021-02-23 22:56:11,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:11,771 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2021-02-23 22:56:11,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 22:56:11,771 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2021-02-23 22:56:11,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-23 22:56:11,773 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:11,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:56:11,774 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 22:56:11,774 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:11,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:11,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1671222138, now seen corresponding path program 1 times [2021-02-23 22:56:11,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:11,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15287033] [2021-02-23 22:56:11,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:11,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:11,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:11,830 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:56:11,832 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:56:11,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:11,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:11,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:11,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:11,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:11,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:11,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:11,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:11,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:11,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:11,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:11,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:11,978 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 22:56:11,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15287033] [2021-02-23 22:56:11,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:56:11,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 22:56:11,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80994128] [2021-02-23 22:56:11,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 22:56:11,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:11,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 22:56:11,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-02-23 22:56:11,981 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 9 states. [2021-02-23 22:56:12,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:12,532 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2021-02-23 22:56:12,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 22:56:12,532 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2021-02-23 22:56:12,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:12,534 INFO L225 Difference]: With dead ends: 57 [2021-02-23 22:56:12,534 INFO L226 Difference]: Without dead ends: 52 [2021-02-23 22:56:12,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-02-23 22:56:12,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-23 22:56:12,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2021-02-23 22:56:12,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-02-23 22:56:12,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-02-23 22:56:12,553 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 33 [2021-02-23 22:56:12,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:12,553 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-02-23 22:56:12,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 22:56:12,554 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-02-23 22:56:12,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-23 22:56:12,555 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:12,555 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:56:12,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 22:56:12,556 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:12,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:12,557 INFO L82 PathProgramCache]: Analyzing trace with hash -816709640, now seen corresponding path program 1 times [2021-02-23 22:56:12,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:12,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753529478] [2021-02-23 22:56:12,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:12,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:12,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:12,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:12,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:12,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:12,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:12,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:12,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:12,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:12,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:12,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:12,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:12,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:12,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:12,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:12,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:12,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:12,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:12,762 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:56:12,766 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:56:12,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:12,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:12,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:12,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:12,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:12,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:12,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:12,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-23 22:56:12,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753529478] [2021-02-23 22:56:12,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:56:12,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 22:56:12,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806085047] [2021-02-23 22:56:12,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 22:56:12,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:12,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 22:56:12,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 22:56:12,830 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 6 states. [2021-02-23 22:56:13,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:13,120 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2021-02-23 22:56:13,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 22:56:13,121 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2021-02-23 22:56:13,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:13,123 INFO L225 Difference]: With dead ends: 77 [2021-02-23 22:56:13,123 INFO L226 Difference]: Without dead ends: 58 [2021-02-23 22:56:13,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-23 22:56:13,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-02-23 22:56:13,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2021-02-23 22:56:13,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-02-23 22:56:13,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-02-23 22:56:13,142 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 42 [2021-02-23 22:56:13,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:13,143 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-02-23 22:56:13,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 22:56:13,143 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-02-23 22:56:13,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-23 22:56:13,144 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:13,145 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:56:13,145 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 22:56:13,145 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:13,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:13,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1880334392, now seen corresponding path program 1 times [2021-02-23 22:56:13,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:13,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024943948] [2021-02-23 22:56:13,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:13,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:13,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:13,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:13,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:13,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:13,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:13,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:13,249 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:56:13,253 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:56:13,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:13,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:13,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:13,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:13,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:13,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:13,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:13,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:13,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:13,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-23 22:56:13,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024943948] [2021-02-23 22:56:13,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:56:13,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 22:56:13,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120509425] [2021-02-23 22:56:13,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 22:56:13,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:13,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 22:56:13,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-02-23 22:56:13,378 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 9 states. [2021-02-23 22:56:13,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:13,871 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2021-02-23 22:56:13,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 22:56:13,872 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2021-02-23 22:56:13,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:13,881 INFO L225 Difference]: With dead ends: 83 [2021-02-23 22:56:13,881 INFO L226 Difference]: Without dead ends: 64 [2021-02-23 22:56:13,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-02-23 22:56:13,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-23 22:56:13,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2021-02-23 22:56:13,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-02-23 22:56:13,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2021-02-23 22:56:13,920 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 42 [2021-02-23 22:56:13,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:13,921 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2021-02-23 22:56:13,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 22:56:13,922 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2021-02-23 22:56:13,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-23 22:56:13,927 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:13,927 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:56:13,928 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 22:56:13,928 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:13,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:13,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1448972168, now seen corresponding path program 1 times [2021-02-23 22:56:13,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:13,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451656782] [2021-02-23 22:56:13,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:13,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:13,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:13,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:13,993 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:56:13,998 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:56:14,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:14,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:14,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:14,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:14,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:14,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:14,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:14,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:14,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:14,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:14,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:14,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:14,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:14,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:14,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:14,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:14,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:14,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:14,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:14,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:14,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:14,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:14,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:14,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:14,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:14,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:14,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:14,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:14,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-23 22:56:14,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451656782] [2021-02-23 22:56:14,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:56:14,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-02-23 22:56:14,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334886519] [2021-02-23 22:56:14,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 22:56:14,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:14,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 22:56:14,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-02-23 22:56:14,217 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 12 states. [2021-02-23 22:56:15,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:15,054 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2021-02-23 22:56:15,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 22:56:15,054 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2021-02-23 22:56:15,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:15,055 INFO L225 Difference]: With dead ends: 69 [2021-02-23 22:56:15,056 INFO L226 Difference]: Without dead ends: 64 [2021-02-23 22:56:15,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2021-02-23 22:56:15,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-23 22:56:15,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2021-02-23 22:56:15,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-02-23 22:56:15,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2021-02-23 22:56:15,072 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 42 [2021-02-23 22:56:15,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:15,072 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2021-02-23 22:56:15,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 22:56:15,073 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2021-02-23 22:56:15,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-23 22:56:15,074 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:15,074 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:56:15,074 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 22:56:15,074 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:15,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:15,075 INFO L82 PathProgramCache]: Analyzing trace with hash -732512891, now seen corresponding path program 1 times [2021-02-23 22:56:15,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:15,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898223751] [2021-02-23 22:56:15,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:15,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:15,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:15,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:15,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:15,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:15,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:15,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:15,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:15,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:15,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:15,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:15,184 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:56:15,186 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:56:15,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:15,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:15,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:15,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:15,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:15,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:15,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:15,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:15,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:15,281 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-02-23 22:56:15,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898223751] [2021-02-23 22:56:15,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:56:15,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 22:56:15,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015377719] [2021-02-23 22:56:15,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 22:56:15,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:15,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 22:56:15,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-02-23 22:56:15,284 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 9 states. [2021-02-23 22:56:15,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:15,853 INFO L93 Difference]: Finished difference Result 89 states and 96 transitions. [2021-02-23 22:56:15,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 22:56:15,854 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2021-02-23 22:56:15,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:15,855 INFO L225 Difference]: With dead ends: 89 [2021-02-23 22:56:15,855 INFO L226 Difference]: Without dead ends: 70 [2021-02-23 22:56:15,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-02-23 22:56:15,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-02-23 22:56:15,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 67. [2021-02-23 22:56:15,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-02-23 22:56:15,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2021-02-23 22:56:15,874 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 51 [2021-02-23 22:56:15,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:15,875 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2021-02-23 22:56:15,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 22:56:15,875 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2021-02-23 22:56:15,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-23 22:56:15,876 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:15,877 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:56:15,877 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 22:56:15,877 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:15,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:15,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1964531141, now seen corresponding path program 1 times [2021-02-23 22:56:15,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:15,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824746201] [2021-02-23 22:56:15,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:15,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:15,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:15,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:15,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:15,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:15,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:15,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:15,959 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:56:15,960 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:56:15,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:15,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:15,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:15,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:15,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:16,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:16,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:16,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:16,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:16,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:16,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:16,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:16,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:16,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:16,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:16,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:16,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:16,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:16,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:16,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:16,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:16,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:16,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:16,126 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-02-23 22:56:16,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824746201] [2021-02-23 22:56:16,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:56:16,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-02-23 22:56:16,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492644523] [2021-02-23 22:56:16,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 22:56:16,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:16,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 22:56:16,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-02-23 22:56:16,129 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 12 states. [2021-02-23 22:56:16,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:16,934 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2021-02-23 22:56:16,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 22:56:16,935 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2021-02-23 22:56:16,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:16,937 INFO L225 Difference]: With dead ends: 95 [2021-02-23 22:56:16,937 INFO L226 Difference]: Without dead ends: 76 [2021-02-23 22:56:16,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2021-02-23 22:56:16,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-02-23 22:56:16,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2021-02-23 22:56:16,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-23 22:56:16,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2021-02-23 22:56:16,958 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 51 [2021-02-23 22:56:16,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:16,958 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2021-02-23 22:56:16,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 22:56:16,958 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2021-02-23 22:56:16,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-23 22:56:16,960 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:16,960 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:56:16,960 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 22:56:16,960 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:16,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:16,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1364775419, now seen corresponding path program 1 times [2021-02-23 22:56:16,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:16,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607981532] [2021-02-23 22:56:16,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:16,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:16,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:16,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:16,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:17,001 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:56:17,002 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:56:17,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:17,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:17,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:17,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:17,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:17,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:17,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:17,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:17,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:17,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:17,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:17,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:17,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:17,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:17,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:17,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:17,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:17,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:17,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:17,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:17,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:17,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:17,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:17,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:17,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:17,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:17,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:17,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:17,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:17,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:17,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:17,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:17,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:17,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:17,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:17,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:17,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:17,302 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-02-23 22:56:17,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607981532] [2021-02-23 22:56:17,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:56:17,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-02-23 22:56:17,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788931142] [2021-02-23 22:56:17,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 22:56:17,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:17,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 22:56:17,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-02-23 22:56:17,305 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 15 states. [2021-02-23 22:56:18,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:18,428 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2021-02-23 22:56:18,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 22:56:18,429 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2021-02-23 22:56:18,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:18,430 INFO L225 Difference]: With dead ends: 81 [2021-02-23 22:56:18,430 INFO L226 Difference]: Without dead ends: 76 [2021-02-23 22:56:18,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=109, Invalid=821, Unknown=0, NotChecked=0, Total=930 [2021-02-23 22:56:18,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-02-23 22:56:18,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 62. [2021-02-23 22:56:18,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-02-23 22:56:18,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2021-02-23 22:56:18,450 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 51 [2021-02-23 22:56:18,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:18,450 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2021-02-23 22:56:18,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 22:56:18,451 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2021-02-23 22:56:18,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-02-23 22:56:18,451 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:18,452 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:56:18,452 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 22:56:18,452 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:18,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:18,453 INFO L82 PathProgramCache]: Analyzing trace with hash 392464323, now seen corresponding path program 1 times [2021-02-23 22:56:18,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:18,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108647097] [2021-02-23 22:56:18,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:18,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:18,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:18,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:18,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:18,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:18,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:18,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:18,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:18,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:18,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:18,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:18,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:18,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:18,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:18,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:18,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:18,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:18,561 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:56:18,562 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:56:18,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:18,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:18,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:18,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:18,595 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:18,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:18,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:18,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:18,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:18,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:18,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:18,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:18,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:18,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:18,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:18,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:18,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:18,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:18,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:18,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:18,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:18,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:18,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:18,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:18,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:18,733 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-02-23 22:56:18,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108647097] [2021-02-23 22:56:18,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:56:18,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-02-23 22:56:18,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835918194] [2021-02-23 22:56:18,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 22:56:18,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:18,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 22:56:18,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-02-23 22:56:18,736 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 12 states. [2021-02-23 22:56:19,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:19,580 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2021-02-23 22:56:19,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 22:56:19,581 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2021-02-23 22:56:19,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:19,582 INFO L225 Difference]: With dead ends: 101 [2021-02-23 22:56:19,583 INFO L226 Difference]: Without dead ends: 82 [2021-02-23 22:56:19,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2021-02-23 22:56:19,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-02-23 22:56:19,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2021-02-23 22:56:19,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-02-23 22:56:19,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2021-02-23 22:56:19,603 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 60 [2021-02-23 22:56:19,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:19,604 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2021-02-23 22:56:19,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 22:56:19,604 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2021-02-23 22:56:19,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-02-23 22:56:19,605 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:19,606 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:56:19,606 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 22:56:19,606 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:19,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:19,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1205458941, now seen corresponding path program 1 times [2021-02-23 22:56:19,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:19,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230569023] [2021-02-23 22:56:19,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:19,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:19,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:19,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:19,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:19,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:19,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:19,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:19,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:19,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:19,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:19,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:19,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:19,691 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:56:19,693 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:56:19,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:19,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:19,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:19,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:19,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:19,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:19,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:19,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:19,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:19,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:19,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:19,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:19,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:19,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:19,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:19,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:19,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:19,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:19,804 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:19,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:19,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:19,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:19,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:19,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:19,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:19,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:19,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:19,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:19,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:19,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:19,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:19,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:19,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:19,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:19,950 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-02-23 22:56:19,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230569023] [2021-02-23 22:56:19,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:56:19,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-02-23 22:56:19,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090680963] [2021-02-23 22:56:19,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 22:56:19,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:19,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 22:56:19,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-02-23 22:56:19,954 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 15 states. [2021-02-23 22:56:21,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:21,126 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2021-02-23 22:56:21,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 22:56:21,127 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 60 [2021-02-23 22:56:21,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:21,128 INFO L225 Difference]: With dead ends: 107 [2021-02-23 22:56:21,128 INFO L226 Difference]: Without dead ends: 88 [2021-02-23 22:56:21,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=116, Invalid=814, Unknown=0, NotChecked=0, Total=930 [2021-02-23 22:56:21,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-02-23 22:56:21,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 85. [2021-02-23 22:56:21,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-02-23 22:56:21,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2021-02-23 22:56:21,149 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 60 [2021-02-23 22:56:21,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:21,150 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2021-02-23 22:56:21,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 22:56:21,150 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2021-02-23 22:56:21,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-02-23 22:56:21,151 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:21,151 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:56:21,151 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-23 22:56:21,151 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:21,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:21,152 INFO L82 PathProgramCache]: Analyzing trace with hash -239798205, now seen corresponding path program 2 times [2021-02-23 22:56:21,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:21,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047417667] [2021-02-23 22:56:21,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:21,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:21,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:21,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:21,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:21,188 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:56:21,189 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:56:21,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:21,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:21,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:21,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:21,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:21,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:21,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:21,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:21,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:21,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:21,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:21,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:21,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:21,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:21,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:21,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:21,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:21,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:21,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:21,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:21,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:21,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:21,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:21,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:21,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:21,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:21,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:21,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:21,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:21,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:21,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:21,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:21,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:21,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:21,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:21,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:21,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:21,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:21,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:21,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:21,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:21,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:21,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:21,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:21,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:21,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:21,604 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-02-23 22:56:21,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047417667] [2021-02-23 22:56:21,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:56:21,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-02-23 22:56:21,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233344425] [2021-02-23 22:56:21,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-23 22:56:21,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:21,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-23 22:56:21,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-02-23 22:56:21,607 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 18 states. [2021-02-23 22:56:23,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:23,157 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2021-02-23 22:56:23,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-23 22:56:23,160 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 60 [2021-02-23 22:56:23,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:23,161 INFO L225 Difference]: With dead ends: 93 [2021-02-23 22:56:23,161 INFO L226 Difference]: Without dead ends: 88 [2021-02-23 22:56:23,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=136, Invalid=1270, Unknown=0, NotChecked=0, Total=1406 [2021-02-23 22:56:23,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-02-23 22:56:23,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 68. [2021-02-23 22:56:23,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-02-23 22:56:23,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2021-02-23 22:56:23,179 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 60 [2021-02-23 22:56:23,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:23,179 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2021-02-23 22:56:23,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-23 22:56:23,180 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2021-02-23 22:56:23,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-02-23 22:56:23,180 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:23,181 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:56:23,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-23 22:56:23,181 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:23,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:23,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1633931772, now seen corresponding path program 1 times [2021-02-23 22:56:23,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:23,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015300993] [2021-02-23 22:56:23,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:23,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:23,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:23,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:23,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:23,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:23,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:23,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:23,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:23,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:23,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:23,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:23,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:23,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:23,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:23,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:23,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:23,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:23,323 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:56:23,324 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:56:23,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:23,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:23,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:23,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:23,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:23,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:23,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:23,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:23,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:23,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:23,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:23,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:23,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:23,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:23,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:23,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:23,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:23,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:23,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:23,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:23,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:23,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:23,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:23,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:23,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:23,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:23,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:23,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:23,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:23,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:23,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:23,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:23,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:23,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:23,588 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-02-23 22:56:23,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015300993] [2021-02-23 22:56:23,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:56:23,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-02-23 22:56:23,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790337158] [2021-02-23 22:56:23,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 22:56:23,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:23,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 22:56:23,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-02-23 22:56:23,625 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 15 states. [2021-02-23 22:56:24,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:24,829 INFO L93 Difference]: Finished difference Result 113 states and 120 transitions. [2021-02-23 22:56:24,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 22:56:24,830 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 69 [2021-02-23 22:56:24,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:24,831 INFO L225 Difference]: With dead ends: 113 [2021-02-23 22:56:24,831 INFO L226 Difference]: Without dead ends: 94 [2021-02-23 22:56:24,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=116, Invalid=814, Unknown=0, NotChecked=0, Total=930 [2021-02-23 22:56:24,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-02-23 22:56:24,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2021-02-23 22:56:24,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2021-02-23 22:56:24,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2021-02-23 22:56:24,853 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 69 [2021-02-23 22:56:24,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:24,853 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2021-02-23 22:56:24,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 22:56:24,853 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2021-02-23 22:56:24,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-02-23 22:56:24,854 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:24,855 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:56:24,855 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-23 22:56:24,855 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:24,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:24,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1063112260, now seen corresponding path program 2 times [2021-02-23 22:56:24,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:24,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491298433] [2021-02-23 22:56:24,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:24,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:24,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:24,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:24,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:24,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:24,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:24,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:24,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:24,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:24,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:24,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:24,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:24,944 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:56:24,945 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:56:24,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:24,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:24,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:24,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:24,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:24,983 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:24,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:24,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:24,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:25,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:25,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:25,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:25,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:25,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:25,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:25,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:25,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:25,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:25,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:25,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:25,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:25,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:25,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:25,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:25,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:25,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:25,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:25,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:25,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:25,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:25,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:25,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:25,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:25,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:25,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:25,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:25,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:25,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:25,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:25,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:25,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:25,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:25,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:25,272 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-02-23 22:56:25,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491298433] [2021-02-23 22:56:25,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:56:25,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-02-23 22:56:25,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399862153] [2021-02-23 22:56:25,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-23 22:56:25,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:25,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-23 22:56:25,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-02-23 22:56:25,275 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 18 states. [2021-02-23 22:56:26,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:26,768 INFO L93 Difference]: Finished difference Result 119 states and 127 transitions. [2021-02-23 22:56:26,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-23 22:56:26,773 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 69 [2021-02-23 22:56:26,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:26,774 INFO L225 Difference]: With dead ends: 119 [2021-02-23 22:56:26,774 INFO L226 Difference]: Without dead ends: 100 [2021-02-23 22:56:26,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=150, Invalid=1256, Unknown=0, NotChecked=0, Total=1406 [2021-02-23 22:56:26,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-02-23 22:56:26,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 97. [2021-02-23 22:56:26,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2021-02-23 22:56:26,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2021-02-23 22:56:26,800 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 69 [2021-02-23 22:56:26,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:26,800 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2021-02-23 22:56:26,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-23 22:56:26,800 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2021-02-23 22:56:26,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-02-23 22:56:26,801 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:26,801 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:56:26,802 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-23 22:56:26,802 INFO L428 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:26,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:26,802 INFO L82 PathProgramCache]: Analyzing trace with hash 2028772996, now seen corresponding path program 2 times [2021-02-23 22:56:26,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:26,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482652098] [2021-02-23 22:56:26,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:26,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:26,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:26,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:26,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:26,840 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:56:26,840 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:56:26,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:26,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:26,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:26,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:26,885 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:26,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:26,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:26,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:26,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:26,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:26,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:26,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:26,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:26,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:26,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:26,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:26,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:26,953 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:26,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:26,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:26,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:26,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:26,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:26,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:27,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:27,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:27,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:27,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:27,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:27,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:27,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:27,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:27,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:27,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:27,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:27,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:27,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:27,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:27,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:27,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:27,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:27,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:27,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:27,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:27,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:27,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:27,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:27,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:27,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:27,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:27,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:27,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:27,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:27,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:27,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:27,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:27,280 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-02-23 22:56:27,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482652098] [2021-02-23 22:56:27,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:56:27,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-02-23 22:56:27,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860697163] [2021-02-23 22:56:27,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-23 22:56:27,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:27,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-23 22:56:27,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2021-02-23 22:56:27,283 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 21 states. [2021-02-23 22:56:29,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:29,314 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2021-02-23 22:56:29,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 22:56:29,315 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 69 [2021-02-23 22:56:29,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:29,316 INFO L225 Difference]: With dead ends: 107 [2021-02-23 22:56:29,316 INFO L226 Difference]: Without dead ends: 102 [2021-02-23 22:56:29,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=168, Invalid=1902, Unknown=0, NotChecked=0, Total=2070 [2021-02-23 22:56:29,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-02-23 22:56:29,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 74. [2021-02-23 22:56:29,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-02-23 22:56:29,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2021-02-23 22:56:29,337 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 69 [2021-02-23 22:56:29,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:29,337 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2021-02-23 22:56:29,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-02-23 22:56:29,338 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2021-02-23 22:56:29,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-02-23 22:56:29,338 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:29,339 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:56:29,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-02-23 22:56:29,339 INFO L428 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:29,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:29,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1957494322, now seen corresponding path program 1 times [2021-02-23 22:56:29,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:29,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299630356] [2021-02-23 22:56:29,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:29,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:29,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:29,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:29,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:29,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:29,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:29,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:29,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:29,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:29,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:29,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:29,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:29,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:29,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:29,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:29,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:29,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:29,449 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-23 22:56:29,450 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-23 22:56:29,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:29,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:29,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:29,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:29,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:29,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:29,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:29,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:29,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:29,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:29,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:29,509 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:29,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:29,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:29,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:29,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:29,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:29,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:29,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:29,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:29,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:29,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:29,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:29,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:29,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:29,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:29,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:29,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:29,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:29,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:29,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:29,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:29,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:29,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:29,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:29,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:29,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:29,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:29,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:29,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:29,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:29,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:29,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:29,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:29,791 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-02-23 22:56:29,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299630356] [2021-02-23 22:56:29,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:56:29,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-02-23 22:56:29,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309762469] [2021-02-23 22:56:29,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-23 22:56:29,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:29,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-23 22:56:29,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-02-23 22:56:29,794 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 18 states. [2021-02-23 22:56:31,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:31,366 INFO L93 Difference]: Finished difference Result 127 states and 134 transitions. [2021-02-23 22:56:31,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-23 22:56:31,367 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2021-02-23 22:56:31,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:31,368 INFO L225 Difference]: With dead ends: 127 [2021-02-23 22:56:31,368 INFO L226 Difference]: Without dead ends: 106 [2021-02-23 22:56:31,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=150, Invalid=1256, Unknown=0, NotChecked=0, Total=1406 [2021-02-23 22:56:31,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-02-23 22:56:31,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2021-02-23 22:56:31,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2021-02-23 22:56:31,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2021-02-23 22:56:31,395 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 78 [2021-02-23 22:56:31,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:31,396 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2021-02-23 22:56:31,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-23 22:56:31,396 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2021-02-23 22:56:31,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-02-23 22:56:31,397 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:31,397 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 22:56:31,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-02-23 22:56:31,397 INFO L428 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:31,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:31,398 INFO L82 PathProgramCache]: Analyzing trace with hash 739549710, now seen corresponding path program 3 times [2021-02-23 22:56:31,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:31,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281525144] [2021-02-23 22:56:31,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:31,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:31,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:31,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:31,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:31,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:31,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:31,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:31,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:31,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:31,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:31,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:31,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:31,502 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-23 22:56:31,503 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-23 22:56:31,523 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-23 22:56:31,524 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-23 22:56:31,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:31,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:31,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:31,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:31,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:31,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:31,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:31,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:31,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:31,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:31,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:31,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:31,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:31,596 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:31,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:31,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:31,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:31,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:31,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:31,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:31,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:31,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:31,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:31,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:31,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:31,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:31,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:31,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:31,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:31,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:31,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:31,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:31,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:31,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:31,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:31,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:31,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:31,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:31,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:31,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:31,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:31,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:31,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:31,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:31,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:31,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:31,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:31,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:31,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:31,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:31,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:31,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:31,972 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 34 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-02-23 22:56:31,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281525144] [2021-02-23 22:56:31,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:56:31,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-02-23 22:56:31,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574337853] [2021-02-23 22:56:31,974 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-23 22:56:31,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:31,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-23 22:56:31,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2021-02-23 22:56:31,975 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 21 states. [2021-02-23 22:56:34,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:34,065 INFO L93 Difference]: Finished difference Result 135 states and 142 transitions. [2021-02-23 22:56:34,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 22:56:34,066 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 78 [2021-02-23 22:56:34,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:34,067 INFO L225 Difference]: With dead ends: 135 [2021-02-23 22:56:34,067 INFO L226 Difference]: Without dead ends: 114 [2021-02-23 22:56:34,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=168, Invalid=1902, Unknown=0, NotChecked=0, Total=2070 [2021-02-23 22:56:34,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-02-23 22:56:34,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 109. [2021-02-23 22:56:34,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2021-02-23 22:56:34,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2021-02-23 22:56:34,095 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 78 [2021-02-23 22:56:34,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:34,095 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2021-02-23 22:56:34,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-02-23 22:56:34,096 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2021-02-23 22:56:34,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-02-23 22:56:34,096 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:56:34,097 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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 22:56:34,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-02-23 22:56:34,097 INFO L428 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:56:34,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:56:34,098 INFO L82 PathProgramCache]: Analyzing trace with hash -749560317, now seen corresponding path program 3 times [2021-02-23 22:56:34,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:56:34,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142755015] [2021-02-23 22:56:34,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:56:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:34,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:34,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:34,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:56:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:34,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:34,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 22:56:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:34,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:34,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:34,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:34,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:34,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:34,267 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-23 22:56:34,268 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-23 22:56:34,287 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-23 22:56:34,288 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-23 22:56:34,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:34,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:34,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:34,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:34,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:34,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:34,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:34,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:34,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:34,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:34,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:34,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:34,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:34,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:34,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:34,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:34,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:34,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:34,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:34,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:34,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:34,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:34,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:34,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:34,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:34,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:34,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 22:56:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:56:34,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:56:34,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:56:34,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 22:56:34,769 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 26 proven. 34 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-02-23 22:56:34,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142755015] [2021-02-23 22:56:34,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 22:56:34,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-02-23 22:56:34,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961895473] [2021-02-23 22:56:34,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-23 22:56:34,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:56:34,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-23 22:56:34,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2021-02-23 22:56:34,771 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 21 states. [2021-02-23 22:56:36,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:56:36,613 INFO L93 Difference]: Finished difference Result 125 states and 130 transitions. [2021-02-23 22:56:36,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 22:56:36,621 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 87 [2021-02-23 22:56:36,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:56:36,622 INFO L225 Difference]: With dead ends: 125 [2021-02-23 22:56:36,622 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 22:56:36,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=168, Invalid=1902, Unknown=0, NotChecked=0, Total=2070 [2021-02-23 22:56:36,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 22:56:36,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 22:56:36,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 22:56:36,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 22:56:36,624 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 87 [2021-02-23 22:56:36,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:56:36,625 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 22:56:36,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2021-02-23 22:56:36,625 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 22:56:36,625 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 22:56:36,625 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-02-23 22:56:36,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 22:56:36,816 WARN L202 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 79 [2021-02-23 22:56:37,007 WARN L202 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2021-02-23 22:56:37,120 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 66 [2021-02-23 22:56:37,816 WARN L202 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 87 [2021-02-23 22:56:37,985 WARN L202 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 85 [2021-02-23 22:56:38,105 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 79 [2021-02-23 22:56:38,327 WARN L202 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 87 [2021-02-23 22:56:38,461 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 85 [2021-02-23 22:56:38,887 WARN L202 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 37 [2021-02-23 22:56:39,074 WARN L202 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 22 [2021-02-23 22:56:39,299 WARN L202 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 36 [2021-02-23 22:56:39,460 WARN L202 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 24 [2021-02-23 22:56:39,715 WARN L202 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 26 [2021-02-23 22:56:40,191 WARN L202 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 44 [2021-02-23 22:56:40,348 WARN L202 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 23 [2021-02-23 22:56:40,873 WARN L202 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 37 [2021-02-23 22:56:41,152 WARN L202 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 37 [2021-02-23 22:56:41,671 WARN L202 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 37 [2021-02-23 22:56:41,967 WARN L202 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 29 [2021-02-23 22:56:42,135 WARN L202 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 28 [2021-02-23 22:56:42,556 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 44 [2021-02-23 22:56:42,822 WARN L202 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 31 [2021-02-23 22:56:42,828 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-02-23 22:56:42,829 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-02-23 22:56:42,832 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-02-23 22:56:42,832 INFO L192 CegarLoopUtils]: At program point L4-3(line 4) the Hoare annotation is: true [2021-02-23 22:56:42,832 INFO L192 CegarLoopUtils]: At program point L4-4(line 4) the Hoare annotation is: true [2021-02-23 22:56:42,833 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 22:56:42,833 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 22:56:42,833 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 4) the Hoare annotation is: true [2021-02-23 22:56:42,833 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 22:56:42,833 INFO L192 CegarLoopUtils]: At program point L4(line 4) the Hoare annotation is: true [2021-02-23 22:56:42,833 INFO L192 CegarLoopUtils]: At program point L4-1(line 4) the Hoare annotation is: true [2021-02-23 22:56:42,833 INFO L192 CegarLoopUtils]: At program point L4-2(line 4) the Hoare annotation is: true [2021-02-23 22:56:42,833 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-23 22:56:42,835 INFO L185 CegarLoopUtils]: At program point L20(line 20) the Hoare annotation is: (or (and (<= 4 id2_~ret~1) (<= id2_~ret~1 4)) (and (<= id2_~ret~1 5) (<= 5 id2_~ret~1)) (and (<= 1 id2_~ret~1) (<= id2_~ret~1 1)) (and (<= id2_~ret~1 2) (<= 2 id2_~ret~1)) (and (<= 3 id2_~ret~1) (<= id2_~ret~1 3))) [2021-02-23 22:56:42,835 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (or (and (<= 4 id2_~ret~1) (<= id2_~ret~1 4)) (and (<= id2_~ret~1 5) (<= 5 id2_~ret~1)) (and (<= id2_~ret~1 2) (<= 2 id2_~ret~1)) (and (<= 1 id2_~ret~1) (<= id2_~ret~1 1)) (and (<= 6 id2_~ret~1) (<= (div id2_~ret~1 4294967296) 0)) (and (<= 3 id2_~ret~1) (<= id2_~ret~1 3))) [2021-02-23 22:56:42,836 INFO L185 CegarLoopUtils]: At program point id2FINAL(lines 16 21) the Hoare annotation is: (or (and (<= |id2_#res| 5) (<= 5 |id2_#res|)) (and (<= |id2_#res| 3) (<= 3 id2_~ret~1) (<= id2_~ret~1 3) (<= 3 |id2_#res|)) (and (<= 1 id2_~ret~1) (<= |id2_#res| 1) (<= id2_~ret~1 1) (<= 1 |id2_#res|)) (and (<= |id2_#res| 0) (<= 0 |id2_#res|)) (and (<= 2 |id2_#res|) (<= id2_~ret~1 2) (<= |id2_#res| 2) (<= 2 id2_~ret~1)) (and (<= 4 id2_~ret~1) (<= id2_~ret~1 4) (<= |id2_#res| 4) (<= 4 |id2_#res|))) [2021-02-23 22:56:42,836 INFO L192 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: true [2021-02-23 22:56:42,836 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (and (<= 6 id2_~ret~1) (<= (div id2_~ret~1 4294967296) 0)) [2021-02-23 22:56:42,836 INFO L192 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: true [2021-02-23 22:56:42,836 INFO L185 CegarLoopUtils]: At program point L18-1(line 18) the Hoare annotation is: (or (and (<= 0 |id2_#t~ret8|) (<= |id2_#t~ret8| 0)) (and (<= 2 |id2_#t~ret8|) (<= |id2_#t~ret8| 2)) (and (<= 3 |id2_#t~ret8|) (<= |id2_#t~ret8| 3)) (and (<= |id2_#t~ret8| 1) (<= 1 |id2_#t~ret8|)) (and (<= |id2_#t~ret8| 5) (<= 5 |id2_#t~ret8|)) (and (<= 4 |id2_#t~ret8|) (<= |id2_#t~ret8| 4))) [2021-02-23 22:56:42,837 INFO L192 CegarLoopUtils]: At program point L17-1(line 17) the Hoare annotation is: true [2021-02-23 22:56:42,837 INFO L185 CegarLoopUtils]: At program point L18-2(line 18) the Hoare annotation is: (or (and (<= 4 |id2_#t~ret8|) (<= id2_~ret~1 5) (<= |id2_#t~ret8| 4) (<= 5 id2_~ret~1)) (and (<= 0 |id2_#t~ret8|) (<= 1 id2_~ret~1) (<= |id2_#t~ret8| 0) (<= id2_~ret~1 1)) (and (<= 3 |id2_#t~ret8|) (<= 4 id2_~ret~1) (<= |id2_#t~ret8| 3) (<= id2_~ret~1 4)) (and (<= |id2_#t~ret8| 5) (<= 6 id2_~ret~1) (<= (div id2_~ret~1 4294967296) 0) (<= 5 |id2_#t~ret8|)) (and (<= id2_~ret~1 2) (<= |id2_#t~ret8| 1) (<= 1 |id2_#t~ret8|) (<= 2 id2_~ret~1)) (and (<= 3 id2_~ret~1) (<= id2_~ret~1 3) (<= |id2_#t~ret8| 2) (<= 2 |id2_#t~ret8|))) [2021-02-23 22:56:42,837 INFO L185 CegarLoopUtils]: At program point id2EXIT(lines 16 21) the Hoare annotation is: (or (and (<= |id2_#res| 5) (<= 5 |id2_#res|)) (and (<= |id2_#res| 3) (<= 3 id2_~ret~1) (<= id2_~ret~1 3) (<= 3 |id2_#res|)) (and (<= 1 id2_~ret~1) (<= |id2_#res| 1) (<= id2_~ret~1 1) (<= 1 |id2_#res|)) (and (<= |id2_#res| 0) (<= 0 |id2_#res|)) (and (<= 2 |id2_#res|) (<= id2_~ret~1 2) (<= |id2_#res| 2) (<= 2 id2_~ret~1)) (and (<= 4 id2_~ret~1) (<= id2_~ret~1 4) (<= |id2_#res| 4) (<= 4 |id2_#res|))) [2021-02-23 22:56:42,837 INFO L192 CegarLoopUtils]: At program point id2ENTRY(lines 16 21) the Hoare annotation is: true [2021-02-23 22:56:42,837 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-23 22:56:42,838 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 22:56:42,838 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 22:56:42,838 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-23 22:56:42,838 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) the Hoare annotation is: false [2021-02-23 22:56:42,838 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 23 29) the Hoare annotation is: true [2021-02-23 22:56:42,838 INFO L185 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: false [2021-02-23 22:56:42,838 INFO L185 CegarLoopUtils]: At program point L26(lines 26 28) the Hoare annotation is: (and (< 0 (+ (div main_~result~0 4294967296) 1)) (<= main_~result~0 5)) [2021-02-23 22:56:42,838 INFO L185 CegarLoopUtils]: At program point L27-1(line 27) the Hoare annotation is: false [2021-02-23 22:56:42,838 INFO L192 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: true [2021-02-23 22:56:42,839 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 23 29) the Hoare annotation is: true [2021-02-23 22:56:42,839 INFO L192 CegarLoopUtils]: At program point L24(line 24) the Hoare annotation is: true [2021-02-23 22:56:42,839 INFO L185 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: (or (and (<= |main_#t~ret10| 3) (<= 3 |main_#t~ret10|)) (and (<= |main_#t~ret10| 2) (<= 2 |main_#t~ret10|)) (and (<= 4 |main_#t~ret10|) (<= |main_#t~ret10| 4)) (= |main_#t~ret10| 0) (and (<= 5 |main_#t~ret10|) (<= |main_#t~ret10| 5)) (and (<= |main_#t~ret10| 1) (<= 1 |main_#t~ret10|))) [2021-02-23 22:56:42,839 INFO L192 CegarLoopUtils]: At program point L26-2(lines 23 29) the Hoare annotation is: true [2021-02-23 22:56:42,839 INFO L185 CegarLoopUtils]: At program point L25-2(line 25) the Hoare annotation is: (let ((.cse0 (< 0 (+ (div main_~result~0 4294967296) 1)))) (or (and (<= main_~result~0 3) (<= |main_#t~ret10| 3) .cse0 (<= 3 |main_#t~ret10|)) (and (<= |main_#t~ret10| 1) (<= 1 |main_#t~ret10|) (<= main_~result~0 1) .cse0) (and (<= 4 |main_#t~ret10|) (<= main_~result~0 4) (<= |main_#t~ret10| 4) .cse0) (and (= main_~result~0 0) (= |main_#t~ret10| 0)) (and (<= 5 |main_#t~ret10|) (<= |main_#t~ret10| 5) (<= main_~result~0 5) .cse0) (and (<= main_~result~0 2) (<= |main_#t~ret10| 2) (<= 2 |main_#t~ret10|) .cse0))) [2021-02-23 22:56:42,839 INFO L185 CegarLoopUtils]: At program point idFINAL(lines 9 14) the Hoare annotation is: (or (and (<= |id_#res| 4) (<= id_~ret~0 4) (<= 4 |id_#res|) (<= 4 id_~ret~0)) (and (<= |id_#res| 3) (<= 3 id_~ret~0) (<= id_~ret~0 3) (<= 3 |id_#res|)) (and (<= id_~ret~0 2) (<= 2 |id_#res|) (<= |id_#res| 2) (<= 2 id_~ret~0)) (and (<= |id_#res| 1) (<= id_~ret~0 1) (<= 1 |id_#res|) (<= 1 id_~ret~0)) (and (<= 0 |id_#res|) (<= |id_#res| 0)) (and (<= 5 |id_#res|) (<= |id_#res| 5))) [2021-02-23 22:56:42,840 INFO L185 CegarLoopUtils]: At program point idEXIT(lines 9 14) the Hoare annotation is: (or (and (<= |id_#res| 4) (<= id_~ret~0 4) (<= 4 |id_#res|) (<= 4 id_~ret~0)) (and (<= |id_#res| 3) (<= 3 id_~ret~0) (<= id_~ret~0 3) (<= 3 |id_#res|)) (and (<= id_~ret~0 2) (<= 2 |id_#res|) (<= |id_#res| 2) (<= 2 id_~ret~0)) (and (<= |id_#res| 1) (<= id_~ret~0 1) (<= 1 |id_#res|) (<= 1 id_~ret~0)) (and (<= 0 |id_#res|) (<= |id_#res| 0)) (and (<= 5 |id_#res|) (<= |id_#res| 5))) [2021-02-23 22:56:42,840 INFO L192 CegarLoopUtils]: At program point idENTRY(lines 9 14) the Hoare annotation is: true [2021-02-23 22:56:42,840 INFO L185 CegarLoopUtils]: At program point L13(line 13) the Hoare annotation is: (or (and (<= 5 id_~ret~0) (<= id_~ret~0 5)) (and (<= id_~ret~0 2) (<= 2 id_~ret~0)) (and (<= id_~ret~0 4) (<= 4 id_~ret~0)) (and (<= 3 id_~ret~0) (<= id_~ret~0 3)) (and (<= id_~ret~0 1) (<= 1 id_~ret~0))) [2021-02-23 22:56:42,840 INFO L185 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: (or (and (<= 5 id_~ret~0) (<= id_~ret~0 5)) (and (<= id_~ret~0 2) (<= 2 id_~ret~0)) (and (<= 6 id_~ret~0) (<= (div id_~ret~0 4294967296) 0)) (and (<= id_~ret~0 4) (<= 4 id_~ret~0)) (and (<= 3 id_~ret~0) (<= id_~ret~0 3)) (and (<= id_~ret~0 1) (<= 1 id_~ret~0))) [2021-02-23 22:56:42,840 INFO L192 CegarLoopUtils]: At program point L11(line 11) the Hoare annotation is: true [2021-02-23 22:56:42,840 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-23 22:56:42,840 INFO L192 CegarLoopUtils]: At program point L10(line 10) the Hoare annotation is: true [2021-02-23 22:56:42,841 INFO L185 CegarLoopUtils]: At program point L11-1(line 11) the Hoare annotation is: (or (and (<= |id_#t~ret7| 1) (<= 1 |id_#t~ret7|)) (and (<= |id_#t~ret7| 2) (<= 2 |id_#t~ret7|)) (and (<= 5 |id_#t~ret7|) (<= |id_#t~ret7| 5)) (and (<= 0 |id_#t~ret7|) (<= |id_#t~ret7| 0)) (and (<= 3 |id_#t~ret7|) (<= |id_#t~ret7| 3)) (and (<= 4 |id_#t~ret7|) (<= |id_#t~ret7| 4))) [2021-02-23 22:56:42,841 INFO L192 CegarLoopUtils]: At program point L10-1(line 10) the Hoare annotation is: true [2021-02-23 22:56:42,841 INFO L185 CegarLoopUtils]: At program point L11-2(line 11) the Hoare annotation is: (or (and (<= id_~ret~0 4) (<= 4 id_~ret~0) (<= 3 |id_#t~ret7|) (<= |id_#t~ret7| 3)) (and (<= 3 id_~ret~0) (<= |id_#t~ret7| 2) (<= 2 |id_#t~ret7|) (<= id_~ret~0 3)) (and (<= 5 id_~ret~0) (<= id_~ret~0 5) (<= 4 |id_#t~ret7|) (<= |id_#t~ret7| 4)) (and (<= 5 |id_#t~ret7|) (<= 6 id_~ret~0) (<= |id_#t~ret7| 5) (<= (div id_~ret~0 4294967296) 0)) (and (<= id_~ret~0 2) (<= |id_#t~ret7| 1) (<= 1 |id_#t~ret7|) (<= 2 id_~ret~0)) (and (<= 0 |id_#t~ret7|) (<= id_~ret~0 1) (<= |id_#t~ret7| 0) (<= 1 id_~ret~0))) [2021-02-23 22:56:42,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:56:42 BoogieIcfgContainer [2021-02-23 22:56:42,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 22:56:42,864 INFO L168 Benchmark]: Toolchain (without parser) took 34288.88 ms. Allocated memory was 168.8 MB in the beginning and 354.4 MB in the end (delta: 185.6 MB). Free memory was 145.4 MB in the beginning and 251.8 MB in the end (delta: -106.4 MB). Peak memory consumption was 208.4 MB. Max. memory is 8.0 GB. [2021-02-23 22:56:42,865 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 168.8 MB. Free memory is still 143.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:56:42,865 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.88 ms. Allocated memory is still 168.8 MB. Free memory was 144.2 MB in the beginning and 134.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 22:56:42,865 INFO L168 Benchmark]: Boogie Preprocessor took 37.39 ms. Allocated memory is still 168.8 MB. Free memory was 134.9 MB in the beginning and 132.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 22:56:42,865 INFO L168 Benchmark]: RCFGBuilder took 642.35 ms. Allocated memory is still 168.8 MB. Free memory was 132.8 MB in the beginning and 148.8 MB in the end (delta: -16.0 MB). Peak memory consumption was 16.4 MB. Max. memory is 8.0 GB. [2021-02-23 22:56:42,865 INFO L168 Benchmark]: TraceAbstraction took 33314.57 ms. Allocated memory was 168.8 MB in the beginning and 354.4 MB in the end (delta: 185.6 MB). Free memory was 148.3 MB in the beginning and 251.8 MB in the end (delta: -103.5 MB). Peak memory consumption was 210.8 MB. Max. memory is 8.0 GB. [2021-02-23 22:56:42,867 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 168.8 MB. Free memory is still 143.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 274.88 ms. Allocated memory is still 168.8 MB. Free memory was 144.2 MB in the beginning and 134.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.39 ms. Allocated memory is still 168.8 MB. Free memory was 134.9 MB in the beginning and 132.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 642.35 ms. Allocated memory is still 168.8 MB. Free memory was 132.8 MB in the beginning and 148.8 MB in the end (delta: -16.0 MB). Peak memory consumption was 16.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 33314.57 ms. Allocated memory was 168.8 MB in the beginning and 354.4 MB in the end (delta: 185.6 MB). Free memory was 148.3 MB in the beginning and 251.8 MB in the end (delta: -103.5 MB). Peak memory consumption was 210.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: 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: 16]: Procedure Contract for id2 Derived contract for procedure id2: (((((\result <= 5 && 5 <= \result) || (((\result <= 3 && 3 <= ret) && ret <= 3) && 3 <= \result)) || (((1 <= ret && \result <= 1) && ret <= 1) && 1 <= \result)) || (\result <= 0 && 0 <= \result)) || (((2 <= \result && ret <= 2) && \result <= 2) && 2 <= ret)) || (((4 <= ret && ret <= 4) && \result <= 4) && 4 <= \result) - ProcedureContractResult [Line: 23]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 9]: Procedure Contract for id Derived contract for procedure id: (((((((\result <= 4 && ret <= 4) && 4 <= \result) && 4 <= ret) || (((\result <= 3 && 3 <= ret) && ret <= 3) && 3 <= \result)) || (((ret <= 2 && 2 <= \result) && \result <= 2) && 2 <= ret)) || (((\result <= 1 && ret <= 1) && 1 <= \result) && 1 <= ret)) || (0 <= \result && \result <= 0)) || (5 <= \result && \result <= 5) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 27.0s, OverallIterations: 18, TraceHistogramMax: 4, AutomataDifference: 19.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 809 SDtfs, 833 SDslu, 2866 SDs, 0 SdLazy, 9255 SolverSat, 83 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 698 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 462 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2144 ImplicationChecksByTransitivity, 14.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 18 MinimizatonAttempts, 107 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 47 LocationsWithAnnotation, 58 PreInvPairs, 300 NumberOfFragments, 891 HoareAnnotationTreeSize, 58 FomulaSimplifications, 385441 FormulaSimplificationTreeSizeReduction, 2.0s HoareSimplificationTime, 47 FomulaSimplificationsInter, 16534 FormulaSimplificationTreeSizeReductionInter, 4.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 999 NumberOfCodeBlocks, 999 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 981 ConstructedInterpolants, 0 QuantifiedInterpolants, 229585 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 276/474 InterpolantCoveringCapability, 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...