/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/loop-invgen/fragtest_simple.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 06:38:57,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 06:38:57,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 06:38:57,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 06:38:57,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 06:38:57,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 06:38:57,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 06:38:57,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 06:38:57,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 06:38:57,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 06:38:57,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 06:38:57,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 06:38:57,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 06:38:57,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 06:38:57,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 06:38:57,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 06:38:57,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 06:38:57,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 06:38:57,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 06:38:57,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 06:38:57,357 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 06:38:57,382 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 06:38:57,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 06:38:57,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 06:38:57,389 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 06:38:57,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 06:38:57,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 06:38:57,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 06:38:57,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 06:38:57,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 06:38:57,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 06:38:57,392 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 06:38:57,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 06:38:57,392 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 06:38:57,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 06:38:57,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 06:38:57,394 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 06:38:57,394 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 06:38:57,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 06:38:57,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 06:38:57,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 06:38:57,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 06:38:57,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 06:38:57,396 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 06:38:57,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 06:38:57,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 06:38:57,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 06:38:57,884 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 06:38:57,884 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 06:38:57,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2020-11-07 06:38:57,975 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cde961a52/e0d7b596b48e4f108838aa33e45e8375/FLAGc0f0ab05b [2020-11-07 06:38:58,767 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 06:38:58,768 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2020-11-07 06:38:58,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cde961a52/e0d7b596b48e4f108838aa33e45e8375/FLAGc0f0ab05b [2020-11-07 06:38:59,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cde961a52/e0d7b596b48e4f108838aa33e45e8375 [2020-11-07 06:38:59,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 06:38:59,151 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 06:38:59,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 06:38:59,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 06:38:59,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 06:38:59,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:38:59" (1/1) ... [2020-11-07 06:38:59,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f7133fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:38:59, skipping insertion in model container [2020-11-07 06:38:59,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:38:59" (1/1) ... [2020-11-07 06:38:59,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 06:38:59,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 06:38:59,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:38:59,455 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 06:38:59,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:38:59,500 INFO L208 MainTranslator]: Completed translation [2020-11-07 06:38:59,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:38:59 WrapperNode [2020-11-07 06:38:59,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 06:38:59,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 06:38:59,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 06:38:59,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 06:38:59,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:38:59" (1/1) ... [2020-11-07 06:38:59,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:38:59" (1/1) ... [2020-11-07 06:38:59,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:38:59" (1/1) ... [2020-11-07 06:38:59,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:38:59" (1/1) ... [2020-11-07 06:38:59,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:38:59" (1/1) ... [2020-11-07 06:38:59,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:38:59" (1/1) ... [2020-11-07 06:38:59,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:38:59" (1/1) ... [2020-11-07 06:38:59,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 06:38:59,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 06:38:59,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 06:38:59,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 06:38:59,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:38:59" (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 [2020-11-07 06:38:59,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 06:38:59,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 06:38:59,654 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 06:38:59,655 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 06:38:59,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 06:38:59,655 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 06:38:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 06:38:59,656 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 06:38:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 06:38:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 06:38:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 06:38:59,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 06:38:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 06:38:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 06:38:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 06:38:59,659 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 06:38:59,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 06:38:59,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 06:38:59,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 06:38:59,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 06:38:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 06:38:59,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 06:39:00,356 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 06:39:00,357 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-07 06:39:00,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:39:00 BoogieIcfgContainer [2020-11-07 06:39:00,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 06:39:00,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 06:39:00,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 06:39:00,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 06:39:00,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:38:59" (1/3) ... [2020-11-07 06:39:00,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4e1f13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:39:00, skipping insertion in model container [2020-11-07 06:39:00,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:38:59" (2/3) ... [2020-11-07 06:39:00,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4e1f13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:39:00, skipping insertion in model container [2020-11-07 06:39:00,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:39:00" (3/3) ... [2020-11-07 06:39:00,376 INFO L111 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2020-11-07 06:39:00,399 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 06:39:00,404 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 06:39:00,420 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 06:39:00,461 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 06:39:00,462 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 06:39:00,462 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 06:39:00,462 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 06:39:00,462 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 06:39:00,462 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 06:39:00,463 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 06:39:00,463 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 06:39:00,486 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-11-07 06:39:00,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-07 06:39:00,507 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:00,509 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] [2020-11-07 06:39:00,510 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:00,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:00,522 INFO L82 PathProgramCache]: Analyzing trace with hash -77372705, now seen corresponding path program 1 times [2020-11-07 06:39:00,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:00,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006464281] [2020-11-07 06:39:00,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:00,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:00,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:39:00,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006464281] [2020-11-07 06:39:00,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:39:00,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 06:39:00,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574253584] [2020-11-07 06:39:00,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 06:39:00,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:01,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 06:39:01,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 06:39:01,006 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2020-11-07 06:39:01,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:01,175 INFO L93 Difference]: Finished difference Result 91 states and 109 transitions. [2020-11-07 06:39:01,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 06:39:01,177 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-11-07 06:39:01,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:01,187 INFO L225 Difference]: With dead ends: 91 [2020-11-07 06:39:01,187 INFO L226 Difference]: Without dead ends: 51 [2020-11-07 06:39:01,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 06:39:01,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-07 06:39:01,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-07 06:39:01,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-07 06:39:01,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2020-11-07 06:39:01,255 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 33 [2020-11-07 06:39:01,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:01,256 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2020-11-07 06:39:01,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 06:39:01,256 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2020-11-07 06:39:01,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-07 06:39:01,258 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:01,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:01,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 06:39:01,259 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:01,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:01,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1541004353, now seen corresponding path program 1 times [2020-11-07 06:39:01,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:01,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775455254] [2020-11-07 06:39:01,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:01,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:01,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:39:01,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775455254] [2020-11-07 06:39:01,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:39:01,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 06:39:01,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182105762] [2020-11-07 06:39:01,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 06:39:01,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:01,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 06:39:01,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 06:39:01,491 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand 6 states. [2020-11-07 06:39:01,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:01,856 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2020-11-07 06:39:01,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 06:39:01,857 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-11-07 06:39:01,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:01,859 INFO L225 Difference]: With dead ends: 62 [2020-11-07 06:39:01,859 INFO L226 Difference]: Without dead ends: 58 [2020-11-07 06:39:01,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-07 06:39:01,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-07 06:39:01,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-11-07 06:39:01,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-07 06:39:01,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-11-07 06:39:01,881 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 37 [2020-11-07 06:39:01,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:01,882 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-11-07 06:39:01,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 06:39:01,882 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-11-07 06:39:01,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-07 06:39:01,884 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:01,884 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:01,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 06:39:01,885 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:01,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:01,886 INFO L82 PathProgramCache]: Analyzing trace with hash -551766036, now seen corresponding path program 1 times [2020-11-07 06:39:01,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:01,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180232973] [2020-11-07 06:39:01,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:02,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:02,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-11-07 06:39:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:02,034 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:39:02,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180232973] [2020-11-07 06:39:02,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:39:02,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-07 06:39:02,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622839913] [2020-11-07 06:39:02,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 06:39:02,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:02,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 06:39:02,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-07 06:39:02,038 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 7 states. [2020-11-07 06:39:02,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:02,463 INFO L93 Difference]: Finished difference Result 93 states and 100 transitions. [2020-11-07 06:39:02,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-07 06:39:02,464 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-11-07 06:39:02,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:02,468 INFO L225 Difference]: With dead ends: 93 [2020-11-07 06:39:02,469 INFO L226 Difference]: Without dead ends: 70 [2020-11-07 06:39:02,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-11-07 06:39:02,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-07 06:39:02,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 59. [2020-11-07 06:39:02,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-07 06:39:02,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-11-07 06:39:02,491 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 47 [2020-11-07 06:39:02,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:02,491 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-11-07 06:39:02,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 06:39:02,492 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-11-07 06:39:02,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-07 06:39:02,494 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:02,494 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:02,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 06:39:02,494 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:02,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:02,495 INFO L82 PathProgramCache]: Analyzing trace with hash -333827980, now seen corresponding path program 1 times [2020-11-07 06:39:02,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:02,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164221155] [2020-11-07 06:39:02,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:02,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:02,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-07 06:39:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:02,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:39:02,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164221155] [2020-11-07 06:39:02,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:02,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-07 06:39:02,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914433169] [2020-11-07 06:39:02,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 06:39:02,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:02,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 06:39:02,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-11-07 06:39:02,718 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 8 states. [2020-11-07 06:39:03,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:03,160 INFO L93 Difference]: Finished difference Result 78 states and 81 transitions. [2020-11-07 06:39:03,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-07 06:39:03,160 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-11-07 06:39:03,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:03,162 INFO L225 Difference]: With dead ends: 78 [2020-11-07 06:39:03,163 INFO L226 Difference]: Without dead ends: 74 [2020-11-07 06:39:03,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-11-07 06:39:03,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-07 06:39:03,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2020-11-07 06:39:03,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-07 06:39:03,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2020-11-07 06:39:03,182 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 53 [2020-11-07 06:39:03,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:03,182 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2020-11-07 06:39:03,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 06:39:03,183 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2020-11-07 06:39:03,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-11-07 06:39:03,185 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:03,185 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:03,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 06:39:03,186 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:03,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:03,186 INFO L82 PathProgramCache]: Analyzing trace with hash -745297825, now seen corresponding path program 2 times [2020-11-07 06:39:03,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:03,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346945874] [2020-11-07 06:39:03,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:03,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:03,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-07 06:39:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:03,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-11-07 06:39:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:03,323 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-07 06:39:03,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346945874] [2020-11-07 06:39:03,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:03,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-07 06:39:03,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083128953] [2020-11-07 06:39:03,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 06:39:03,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:03,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 06:39:03,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-07 06:39:03,326 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand 9 states. [2020-11-07 06:39:03,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:03,833 INFO L93 Difference]: Finished difference Result 123 states and 132 transitions. [2020-11-07 06:39:03,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-07 06:39:03,834 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-11-07 06:39:03,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:03,839 INFO L225 Difference]: With dead ends: 123 [2020-11-07 06:39:03,840 INFO L226 Difference]: Without dead ends: 94 [2020-11-07 06:39:03,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-11-07 06:39:03,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-11-07 06:39:03,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 75. [2020-11-07 06:39:03,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-07 06:39:03,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2020-11-07 06:39:03,890 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 63 [2020-11-07 06:39:03,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:03,891 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2020-11-07 06:39:03,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 06:39:03,893 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2020-11-07 06:39:03,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-07 06:39:03,896 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:03,896 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:03,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 06:39:03,896 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:03,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:03,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1059122969, now seen corresponding path program 3 times [2020-11-07 06:39:03,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:03,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530696340] [2020-11-07 06:39:03,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:04,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:04,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-11-07 06:39:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:04,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-07 06:39:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:04,120 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-07 06:39:04,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530696340] [2020-11-07 06:39:04,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:04,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-07 06:39:04,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186530814] [2020-11-07 06:39:04,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 06:39:04,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:04,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 06:39:04,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-07 06:39:04,124 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand 9 states. [2020-11-07 06:39:04,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:04,633 INFO L93 Difference]: Finished difference Result 94 states and 97 transitions. [2020-11-07 06:39:04,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-07 06:39:04,634 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-11-07 06:39:04,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:04,639 INFO L225 Difference]: With dead ends: 94 [2020-11-07 06:39:04,639 INFO L226 Difference]: Without dead ends: 90 [2020-11-07 06:39:04,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-11-07 06:39:04,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-11-07 06:39:04,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2020-11-07 06:39:04,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-07 06:39:04,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2020-11-07 06:39:04,668 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 69 [2020-11-07 06:39:04,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:04,669 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2020-11-07 06:39:04,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 06:39:04,670 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2020-11-07 06:39:04,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-11-07 06:39:04,672 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:04,672 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-07 06:39:04,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 06:39:04,672 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:04,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:04,679 INFO L82 PathProgramCache]: Analyzing trace with hash -2105748206, now seen corresponding path program 4 times [2020-11-07 06:39:04,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:04,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442262826] [2020-11-07 06:39:04,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:04,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:04,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:04,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-11-07 06:39:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:04,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-07 06:39:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:04,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-11-07 06:39:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:04,914 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-07 06:39:04,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442262826] [2020-11-07 06:39:04,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:04,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 06:39:04,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759462208] [2020-11-07 06:39:04,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 06:39:04,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:04,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 06:39:04,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-11-07 06:39:04,919 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand 11 states. [2020-11-07 06:39:05,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:05,752 INFO L93 Difference]: Finished difference Result 153 states and 165 transitions. [2020-11-07 06:39:05,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 06:39:05,758 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-11-07 06:39:05,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:05,760 INFO L225 Difference]: With dead ends: 153 [2020-11-07 06:39:05,761 INFO L226 Difference]: Without dead ends: 118 [2020-11-07 06:39:05,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-11-07 06:39:05,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-11-07 06:39:05,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 91. [2020-11-07 06:39:05,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-07 06:39:05,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 94 transitions. [2020-11-07 06:39:05,789 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 94 transitions. Word has length 79 [2020-11-07 06:39:05,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:05,790 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 94 transitions. [2020-11-07 06:39:05,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 06:39:05,790 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 94 transitions. [2020-11-07 06:39:05,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-07 06:39:05,792 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:05,792 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:05,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 06:39:05,792 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:05,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:05,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1446391194, now seen corresponding path program 5 times [2020-11-07 06:39:05,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:05,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854281808] [2020-11-07 06:39:05,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:05,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:05,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-11-07 06:39:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:05,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-11-07 06:39:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:05,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-11-07 06:39:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:06,003 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 20 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-07 06:39:06,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854281808] [2020-11-07 06:39:06,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:06,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-11-07 06:39:06,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145685891] [2020-11-07 06:39:06,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 06:39:06,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:06,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 06:39:06,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-11-07 06:39:06,007 INFO L87 Difference]: Start difference. First operand 91 states and 94 transitions. Second operand 12 states. [2020-11-07 06:39:07,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:07,021 INFO L93 Difference]: Finished difference Result 167 states and 182 transitions. [2020-11-07 06:39:07,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-07 06:39:07,022 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 85 [2020-11-07 06:39:07,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:07,024 INFO L225 Difference]: With dead ends: 167 [2020-11-07 06:39:07,024 INFO L226 Difference]: Without dead ends: 132 [2020-11-07 06:39:07,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2020-11-07 06:39:07,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-11-07 06:39:07,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 97. [2020-11-07 06:39:07,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-07 06:39:07,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 100 transitions. [2020-11-07 06:39:07,049 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 100 transitions. Word has length 85 [2020-11-07 06:39:07,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:07,050 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 100 transitions. [2020-11-07 06:39:07,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 06:39:07,050 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 100 transitions. [2020-11-07 06:39:07,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-07 06:39:07,051 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:07,052 INFO L422 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:07,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 06:39:07,052 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:07,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:07,053 INFO L82 PathProgramCache]: Analyzing trace with hash -102957022, now seen corresponding path program 6 times [2020-11-07 06:39:07,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:07,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883900168] [2020-11-07 06:39:07,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:07,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:07,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:07,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 06:39:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:07,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-07 06:39:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:07,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-11-07 06:39:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:07,335 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 44 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-07 06:39:07,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883900168] [2020-11-07 06:39:07,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:07,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-07 06:39:07,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101765064] [2020-11-07 06:39:07,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 06:39:07,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:07,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 06:39:07,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-07 06:39:07,355 INFO L87 Difference]: Start difference. First operand 97 states and 100 transitions. Second operand 10 states. [2020-11-07 06:39:08,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:08,018 INFO L93 Difference]: Finished difference Result 116 states and 119 transitions. [2020-11-07 06:39:08,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 06:39:08,019 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 91 [2020-11-07 06:39:08,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:08,020 INFO L225 Difference]: With dead ends: 116 [2020-11-07 06:39:08,020 INFO L226 Difference]: Without dead ends: 112 [2020-11-07 06:39:08,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-11-07 06:39:08,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-11-07 06:39:08,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 107. [2020-11-07 06:39:08,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-11-07 06:39:08,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 110 transitions. [2020-11-07 06:39:08,069 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 110 transitions. Word has length 91 [2020-11-07 06:39:08,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:08,069 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 110 transitions. [2020-11-07 06:39:08,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 06:39:08,069 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 110 transitions. [2020-11-07 06:39:08,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-07 06:39:08,074 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:08,075 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:08,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-07 06:39:08,075 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:08,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:08,076 INFO L82 PathProgramCache]: Analyzing trace with hash 919680653, now seen corresponding path program 7 times [2020-11-07 06:39:08,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:08,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625838401] [2020-11-07 06:39:08,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:08,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:08,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:08,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 06:39:08,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:08,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-11-07 06:39:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:08,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-11-07 06:39:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:08,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-11-07 06:39:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:08,373 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 37 proven. 59 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-11-07 06:39:08,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625838401] [2020-11-07 06:39:08,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:08,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-11-07 06:39:08,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77442380] [2020-11-07 06:39:08,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-07 06:39:08,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:08,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-07 06:39:08,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-11-07 06:39:08,376 INFO L87 Difference]: Start difference. First operand 107 states and 110 transitions. Second operand 14 states. [2020-11-07 06:39:09,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:09,586 INFO L93 Difference]: Finished difference Result 197 states and 215 transitions. [2020-11-07 06:39:09,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-07 06:39:09,587 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 101 [2020-11-07 06:39:09,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:09,589 INFO L225 Difference]: With dead ends: 197 [2020-11-07 06:39:09,589 INFO L226 Difference]: Without dead ends: 156 [2020-11-07 06:39:09,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2020-11-07 06:39:09,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-11-07 06:39:09,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 113. [2020-11-07 06:39:09,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-07 06:39:09,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 116 transitions. [2020-11-07 06:39:09,615 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 116 transitions. Word has length 101 [2020-11-07 06:39:09,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:09,616 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 116 transitions. [2020-11-07 06:39:09,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-07 06:39:09,616 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 116 transitions. [2020-11-07 06:39:09,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-11-07 06:39:09,617 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:09,617 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:09,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-07 06:39:09,618 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:09,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:09,619 INFO L82 PathProgramCache]: Analyzing trace with hash 13760789, now seen corresponding path program 8 times [2020-11-07 06:39:09,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:09,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763249379] [2020-11-07 06:39:09,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:09,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:09,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-11-07 06:39:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:09,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-11-07 06:39:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:09,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-07 06:39:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:09,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 06:39:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:09,799 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 52 proven. 70 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-11-07 06:39:09,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763249379] [2020-11-07 06:39:09,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:09,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-07 06:39:09,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438758764] [2020-11-07 06:39:09,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 06:39:09,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:09,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 06:39:09,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-07 06:39:09,802 INFO L87 Difference]: Start difference. First operand 113 states and 116 transitions. Second operand 11 states. [2020-11-07 06:39:10,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:10,591 INFO L93 Difference]: Finished difference Result 132 states and 135 transitions. [2020-11-07 06:39:10,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 06:39:10,591 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 107 [2020-11-07 06:39:10,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:10,593 INFO L225 Difference]: With dead ends: 132 [2020-11-07 06:39:10,593 INFO L226 Difference]: Without dead ends: 128 [2020-11-07 06:39:10,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2020-11-07 06:39:10,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-11-07 06:39:10,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 123. [2020-11-07 06:39:10,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-11-07 06:39:10,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 126 transitions. [2020-11-07 06:39:10,621 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 126 transitions. Word has length 107 [2020-11-07 06:39:10,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:10,629 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 126 transitions. [2020-11-07 06:39:10,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 06:39:10,630 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 126 transitions. [2020-11-07 06:39:10,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-11-07 06:39:10,636 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:10,637 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:10,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-07 06:39:10,638 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:10,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:10,640 INFO L82 PathProgramCache]: Analyzing trace with hash -16393280, now seen corresponding path program 9 times [2020-11-07 06:39:10,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:10,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020950754] [2020-11-07 06:39:10,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:10,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:10,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-11-07 06:39:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:10,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-11-07 06:39:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:10,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-11-07 06:39:10,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:10,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 06:39:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:10,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-11-07 06:39:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:10,964 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 60 proven. 90 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-11-07 06:39:10,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020950754] [2020-11-07 06:39:10,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:10,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-11-07 06:39:10,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560820793] [2020-11-07 06:39:10,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-07 06:39:10,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:10,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-07 06:39:10,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-11-07 06:39:10,968 INFO L87 Difference]: Start difference. First operand 123 states and 126 transitions. Second operand 16 states. [2020-11-07 06:39:12,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:12,461 INFO L93 Difference]: Finished difference Result 227 states and 248 transitions. [2020-11-07 06:39:12,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-07 06:39:12,461 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 117 [2020-11-07 06:39:12,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:12,467 INFO L225 Difference]: With dead ends: 227 [2020-11-07 06:39:12,467 INFO L226 Difference]: Without dead ends: 180 [2020-11-07 06:39:12,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2020-11-07 06:39:12,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-11-07 06:39:12,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 129. [2020-11-07 06:39:12,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-11-07 06:39:12,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 132 transitions. [2020-11-07 06:39:12,496 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 132 transitions. Word has length 117 [2020-11-07 06:39:12,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:12,497 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 132 transitions. [2020-11-07 06:39:12,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-07 06:39:12,497 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 132 transitions. [2020-11-07 06:39:12,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-11-07 06:39:12,498 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:12,499 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:12,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-07 06:39:12,499 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:12,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:12,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1568706120, now seen corresponding path program 10 times [2020-11-07 06:39:12,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:12,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392838776] [2020-11-07 06:39:12,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:12,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:12,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-11-07 06:39:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:12,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:39:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:12,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-11-07 06:39:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:12,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-11-07 06:39:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:12,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-11-07 06:39:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:12,690 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 80 proven. 102 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-11-07 06:39:12,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392838776] [2020-11-07 06:39:12,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:12,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-11-07 06:39:12,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291945507] [2020-11-07 06:39:12,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 06:39:12,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:12,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 06:39:12,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-11-07 06:39:12,694 INFO L87 Difference]: Start difference. First operand 129 states and 132 transitions. Second operand 12 states. [2020-11-07 06:39:13,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:13,506 INFO L93 Difference]: Finished difference Result 148 states and 151 transitions. [2020-11-07 06:39:13,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-07 06:39:13,507 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 123 [2020-11-07 06:39:13,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:13,509 INFO L225 Difference]: With dead ends: 148 [2020-11-07 06:39:13,509 INFO L226 Difference]: Without dead ends: 144 [2020-11-07 06:39:13,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2020-11-07 06:39:13,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-11-07 06:39:13,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 139. [2020-11-07 06:39:13,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-11-07 06:39:13,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 142 transitions. [2020-11-07 06:39:13,533 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 142 transitions. Word has length 123 [2020-11-07 06:39:13,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:13,533 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 142 transitions. [2020-11-07 06:39:13,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 06:39:13,534 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 142 transitions. [2020-11-07 06:39:13,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-11-07 06:39:13,535 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:13,536 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:13,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-07 06:39:13,536 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:13,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:13,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1613902541, now seen corresponding path program 11 times [2020-11-07 06:39:13,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:13,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424058199] [2020-11-07 06:39:13,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:13,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:13,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-11-07 06:39:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:13,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-11-07 06:39:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:13,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-11-07 06:39:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:13,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-11-07 06:39:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:13,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-11-07 06:39:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:13,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-11-07 06:39:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:13,831 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 89 proven. 127 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-11-07 06:39:13,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424058199] [2020-11-07 06:39:13,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:13,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-11-07 06:39:13,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458725128] [2020-11-07 06:39:13,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-07 06:39:13,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:13,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-07 06:39:13,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-11-07 06:39:13,834 INFO L87 Difference]: Start difference. First operand 139 states and 142 transitions. Second operand 18 states. [2020-11-07 06:39:15,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:15,529 INFO L93 Difference]: Finished difference Result 257 states and 281 transitions. [2020-11-07 06:39:15,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-07 06:39:15,530 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 133 [2020-11-07 06:39:15,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:15,532 INFO L225 Difference]: With dead ends: 257 [2020-11-07 06:39:15,533 INFO L226 Difference]: Without dead ends: 204 [2020-11-07 06:39:15,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=359, Invalid=1047, Unknown=0, NotChecked=0, Total=1406 [2020-11-07 06:39:15,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-11-07 06:39:15,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 145. [2020-11-07 06:39:15,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-07 06:39:15,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 148 transitions. [2020-11-07 06:39:15,580 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 148 transitions. Word has length 133 [2020-11-07 06:39:15,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:15,580 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 148 transitions. [2020-11-07 06:39:15,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-07 06:39:15,580 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 148 transitions. [2020-11-07 06:39:15,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-07 06:39:15,583 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:15,583 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:15,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-07 06:39:15,584 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:15,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:15,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1058902085, now seen corresponding path program 12 times [2020-11-07 06:39:15,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:15,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473832208] [2020-11-07 06:39:15,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:15,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:15,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-11-07 06:39:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:15,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-11-07 06:39:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:15,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-11-07 06:39:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:15,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-11-07 06:39:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:15,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:39:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:15,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-11-07 06:39:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:15,828 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 114 proven. 140 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-11-07 06:39:15,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473832208] [2020-11-07 06:39:15,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:15,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-11-07 06:39:15,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268289298] [2020-11-07 06:39:15,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-07 06:39:15,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:15,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-07 06:39:15,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-11-07 06:39:15,832 INFO L87 Difference]: Start difference. First operand 145 states and 148 transitions. Second operand 13 states. [2020-11-07 06:39:16,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:16,798 INFO L93 Difference]: Finished difference Result 164 states and 167 transitions. [2020-11-07 06:39:16,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-07 06:39:16,799 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 139 [2020-11-07 06:39:16,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:16,801 INFO L225 Difference]: With dead ends: 164 [2020-11-07 06:39:16,801 INFO L226 Difference]: Without dead ends: 160 [2020-11-07 06:39:16,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2020-11-07 06:39:16,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-11-07 06:39:16,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 155. [2020-11-07 06:39:16,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-11-07 06:39:16,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 158 transitions. [2020-11-07 06:39:16,836 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 158 transitions. Word has length 139 [2020-11-07 06:39:16,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:16,836 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 158 transitions. [2020-11-07 06:39:16,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-07 06:39:16,837 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 158 transitions. [2020-11-07 06:39:16,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-11-07 06:39:16,838 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:16,839 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:16,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-07 06:39:16,839 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:16,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:16,840 INFO L82 PathProgramCache]: Analyzing trace with hash -507069722, now seen corresponding path program 13 times [2020-11-07 06:39:16,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:16,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969402989] [2020-11-07 06:39:16,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:17,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:17,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-11-07 06:39:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:17,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-11-07 06:39:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:17,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-11-07 06:39:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:17,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-11-07 06:39:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:17,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:39:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:17,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-11-07 06:39:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:17,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-11-07 06:39:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:17,209 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 124 proven. 170 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-11-07 06:39:17,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969402989] [2020-11-07 06:39:17,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:17,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-11-07 06:39:17,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264838880] [2020-11-07 06:39:17,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-07 06:39:17,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:17,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-07 06:39:17,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-11-07 06:39:17,212 INFO L87 Difference]: Start difference. First operand 155 states and 158 transitions. Second operand 20 states. [2020-11-07 06:39:19,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:19,081 INFO L93 Difference]: Finished difference Result 287 states and 314 transitions. [2020-11-07 06:39:19,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-07 06:39:19,081 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 149 [2020-11-07 06:39:19,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:19,085 INFO L225 Difference]: With dead ends: 287 [2020-11-07 06:39:19,085 INFO L226 Difference]: Without dead ends: 228 [2020-11-07 06:39:19,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=463, Invalid=1343, Unknown=0, NotChecked=0, Total=1806 [2020-11-07 06:39:19,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-11-07 06:39:19,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 161. [2020-11-07 06:39:19,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-11-07 06:39:19,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 164 transitions. [2020-11-07 06:39:19,115 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 164 transitions. Word has length 149 [2020-11-07 06:39:19,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:19,116 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 164 transitions. [2020-11-07 06:39:19,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-07 06:39:19,116 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 164 transitions. [2020-11-07 06:39:19,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-11-07 06:39:19,118 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:19,118 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:19,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-07 06:39:19,119 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:19,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:19,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1282060946, now seen corresponding path program 14 times [2020-11-07 06:39:19,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:19,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575862970] [2020-11-07 06:39:19,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:19,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:19,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-11-07 06:39:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:19,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-11-07 06:39:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:19,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-11-07 06:39:19,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:19,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-07 06:39:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:19,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 06:39:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:19,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-11-07 06:39:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:19,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-11-07 06:39:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:19,395 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 154 proven. 184 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-11-07 06:39:19,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575862970] [2020-11-07 06:39:19,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:19,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-11-07 06:39:19,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529915200] [2020-11-07 06:39:19,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-07 06:39:19,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:19,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-07 06:39:19,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-11-07 06:39:19,399 INFO L87 Difference]: Start difference. First operand 161 states and 164 transitions. Second operand 14 states. [2020-11-07 06:39:20,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:20,386 INFO L93 Difference]: Finished difference Result 180 states and 183 transitions. [2020-11-07 06:39:20,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-07 06:39:20,387 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 155 [2020-11-07 06:39:20,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:20,389 INFO L225 Difference]: With dead ends: 180 [2020-11-07 06:39:20,389 INFO L226 Difference]: Without dead ends: 176 [2020-11-07 06:39:20,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2020-11-07 06:39:20,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-11-07 06:39:20,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 171. [2020-11-07 06:39:20,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-11-07 06:39:20,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 174 transitions. [2020-11-07 06:39:20,420 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 174 transitions. Word has length 155 [2020-11-07 06:39:20,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:20,420 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 174 transitions. [2020-11-07 06:39:20,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-07 06:39:20,420 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 174 transitions. [2020-11-07 06:39:20,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-11-07 06:39:20,422 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:20,423 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:20,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-07 06:39:20,423 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:20,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:20,424 INFO L82 PathProgramCache]: Analyzing trace with hash 674387161, now seen corresponding path program 15 times [2020-11-07 06:39:20,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:20,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217994804] [2020-11-07 06:39:20,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:20,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:20,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-11-07 06:39:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:20,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-11-07 06:39:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:20,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-11-07 06:39:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:20,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-07 06:39:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:20,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 06:39:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:20,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-11-07 06:39:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:20,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-11-07 06:39:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:20,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:39:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:20,872 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 165 proven. 219 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-11-07 06:39:20,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217994804] [2020-11-07 06:39:20,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:20,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-11-07 06:39:20,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987187496] [2020-11-07 06:39:20,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-07 06:39:20,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:20,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-07 06:39:20,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2020-11-07 06:39:20,883 INFO L87 Difference]: Start difference. First operand 171 states and 174 transitions. Second operand 22 states. [2020-11-07 06:39:23,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:23,008 INFO L93 Difference]: Finished difference Result 317 states and 347 transitions. [2020-11-07 06:39:23,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-07 06:39:23,009 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 165 [2020-11-07 06:39:23,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:23,012 INFO L225 Difference]: With dead ends: 317 [2020-11-07 06:39:23,012 INFO L226 Difference]: Without dead ends: 252 [2020-11-07 06:39:23,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=581, Invalid=1675, Unknown=0, NotChecked=0, Total=2256 [2020-11-07 06:39:23,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-11-07 06:39:23,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 177. [2020-11-07 06:39:23,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-11-07 06:39:23,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 180 transitions. [2020-11-07 06:39:23,043 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 180 transitions. Word has length 165 [2020-11-07 06:39:23,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:23,043 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 180 transitions. [2020-11-07 06:39:23,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-07 06:39:23,043 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 180 transitions. [2020-11-07 06:39:23,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-07 06:39:23,046 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:23,046 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:23,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-07 06:39:23,046 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:23,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:23,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1490736993, now seen corresponding path program 16 times [2020-11-07 06:39:23,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:23,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871936576] [2020-11-07 06:39:23,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:23,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:23,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-11-07 06:39:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:23,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:39:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:23,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-07 06:39:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:23,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-11-07 06:39:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:23,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-07 06:39:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:23,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-11-07 06:39:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:23,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-11-07 06:39:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:23,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-11-07 06:39:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:23,335 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 200 proven. 234 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-11-07 06:39:23,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871936576] [2020-11-07 06:39:23,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:23,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-11-07 06:39:23,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714696453] [2020-11-07 06:39:23,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-07 06:39:23,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:23,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-07 06:39:23,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-11-07 06:39:23,338 INFO L87 Difference]: Start difference. First operand 177 states and 180 transitions. Second operand 15 states. [2020-11-07 06:39:24,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:24,389 INFO L93 Difference]: Finished difference Result 196 states and 199 transitions. [2020-11-07 06:39:24,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-07 06:39:24,389 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 171 [2020-11-07 06:39:24,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:24,392 INFO L225 Difference]: With dead ends: 196 [2020-11-07 06:39:24,392 INFO L226 Difference]: Without dead ends: 192 [2020-11-07 06:39:24,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2020-11-07 06:39:24,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-11-07 06:39:24,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 187. [2020-11-07 06:39:24,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-11-07 06:39:24,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 190 transitions. [2020-11-07 06:39:24,424 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 190 transitions. Word has length 171 [2020-11-07 06:39:24,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:24,425 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 190 transitions. [2020-11-07 06:39:24,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-07 06:39:24,425 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 190 transitions. [2020-11-07 06:39:24,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-11-07 06:39:24,426 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:24,426 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:24,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-07 06:39:24,427 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:24,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:24,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1945520908, now seen corresponding path program 17 times [2020-11-07 06:39:24,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:24,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997847201] [2020-11-07 06:39:24,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:24,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:24,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-11-07 06:39:24,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:24,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-11-07 06:39:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:24,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-11-07 06:39:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:24,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-11-07 06:39:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:24,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-07 06:39:24,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:24,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-11-07 06:39:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:24,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-11-07 06:39:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:24,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-11-07 06:39:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:24,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-11-07 06:39:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:24,924 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 212 proven. 274 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-11-07 06:39:24,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997847201] [2020-11-07 06:39:24,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:24,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-11-07 06:39:24,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136830074] [2020-11-07 06:39:24,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-07 06:39:24,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:24,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-07 06:39:24,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2020-11-07 06:39:24,927 INFO L87 Difference]: Start difference. First operand 187 states and 190 transitions. Second operand 24 states. [2020-11-07 06:39:27,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:27,364 INFO L93 Difference]: Finished difference Result 347 states and 380 transitions. [2020-11-07 06:39:27,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-07 06:39:27,364 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 181 [2020-11-07 06:39:27,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:27,367 INFO L225 Difference]: With dead ends: 347 [2020-11-07 06:39:27,367 INFO L226 Difference]: Without dead ends: 276 [2020-11-07 06:39:27,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=713, Invalid=2043, Unknown=0, NotChecked=0, Total=2756 [2020-11-07 06:39:27,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-11-07 06:39:27,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 193. [2020-11-07 06:39:27,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-11-07 06:39:27,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 196 transitions. [2020-11-07 06:39:27,406 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 196 transitions. Word has length 181 [2020-11-07 06:39:27,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:27,406 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 196 transitions. [2020-11-07 06:39:27,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-11-07 06:39:27,406 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 196 transitions. [2020-11-07 06:39:27,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-11-07 06:39:27,408 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:27,408 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:27,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-07 06:39:27,408 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:27,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:27,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1905835412, now seen corresponding path program 18 times [2020-11-07 06:39:27,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:27,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1005716507] [2020-11-07 06:39:27,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:27,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:27,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 06:39:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:27,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-11-07 06:39:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:27,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-11-07 06:39:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:27,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-11-07 06:39:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:27,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:39:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:27,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-11-07 06:39:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:27,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-11-07 06:39:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:27,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-11-07 06:39:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:27,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-11-07 06:39:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:27,740 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 252 proven. 290 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-11-07 06:39:27,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1005716507] [2020-11-07 06:39:27,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:27,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-11-07 06:39:27,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410994091] [2020-11-07 06:39:27,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-07 06:39:27,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:27,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-07 06:39:27,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-11-07 06:39:27,749 INFO L87 Difference]: Start difference. First operand 193 states and 196 transitions. Second operand 16 states. [2020-11-07 06:39:28,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:28,893 INFO L93 Difference]: Finished difference Result 212 states and 215 transitions. [2020-11-07 06:39:28,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-07 06:39:28,894 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 187 [2020-11-07 06:39:28,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:28,896 INFO L225 Difference]: With dead ends: 212 [2020-11-07 06:39:28,896 INFO L226 Difference]: Without dead ends: 208 [2020-11-07 06:39:28,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2020-11-07 06:39:28,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-11-07 06:39:28,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 203. [2020-11-07 06:39:28,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-11-07 06:39:28,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 206 transitions. [2020-11-07 06:39:28,934 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 206 transitions. Word has length 187 [2020-11-07 06:39:28,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:28,934 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 206 transitions. [2020-11-07 06:39:28,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-07 06:39:28,935 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 206 transitions. [2020-11-07 06:39:28,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-11-07 06:39:28,936 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:28,936 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:28,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-07 06:39:28,937 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:28,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:28,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1499705985, now seen corresponding path program 19 times [2020-11-07 06:39:28,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:28,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962452260] [2020-11-07 06:39:28,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:29,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:29,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 06:39:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:29,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-11-07 06:39:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:29,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-11-07 06:39:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:29,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-11-07 06:39:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:29,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:39:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:29,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-11-07 06:39:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:29,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-11-07 06:39:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:29,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-11-07 06:39:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:29,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-11-07 06:39:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:29,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-11-07 06:39:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:29,470 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 265 proven. 335 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-11-07 06:39:29,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962452260] [2020-11-07 06:39:29,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:29,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-11-07 06:39:29,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661000738] [2020-11-07 06:39:29,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-07 06:39:29,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:29,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-07 06:39:29,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2020-11-07 06:39:29,473 INFO L87 Difference]: Start difference. First operand 203 states and 206 transitions. Second operand 26 states. [2020-11-07 06:39:32,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:32,275 INFO L93 Difference]: Finished difference Result 377 states and 413 transitions. [2020-11-07 06:39:32,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-07 06:39:32,279 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 197 [2020-11-07 06:39:32,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:32,282 INFO L225 Difference]: With dead ends: 377 [2020-11-07 06:39:32,282 INFO L226 Difference]: Without dead ends: 300 [2020-11-07 06:39:32,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=859, Invalid=2447, Unknown=0, NotChecked=0, Total=3306 [2020-11-07 06:39:32,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-11-07 06:39:32,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 209. [2020-11-07 06:39:32,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-11-07 06:39:32,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 212 transitions. [2020-11-07 06:39:32,326 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 212 transitions. Word has length 197 [2020-11-07 06:39:32,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:32,327 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 212 transitions. [2020-11-07 06:39:32,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-11-07 06:39:32,327 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 212 transitions. [2020-11-07 06:39:32,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-11-07 06:39:32,328 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:32,329 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:32,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-07 06:39:32,329 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:32,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:32,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1621577721, now seen corresponding path program 20 times [2020-11-07 06:39:32,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:32,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485091830] [2020-11-07 06:39:32,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:32,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:32,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:32,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-11-07 06:39:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:32,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-11-07 06:39:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:32,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-11-07 06:39:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:32,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-11-07 06:39:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:32,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-07 06:39:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:32,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-11-07 06:39:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:32,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-11-07 06:39:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:32,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:39:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:32,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-11-07 06:39:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:32,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-11-07 06:39:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:32,714 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 310 proven. 352 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-11-07 06:39:32,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485091830] [2020-11-07 06:39:32,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:32,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-11-07 06:39:32,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069837016] [2020-11-07 06:39:32,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-07 06:39:32,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:32,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-07 06:39:32,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-11-07 06:39:32,720 INFO L87 Difference]: Start difference. First operand 209 states and 212 transitions. Second operand 17 states. [2020-11-07 06:39:34,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:34,010 INFO L93 Difference]: Finished difference Result 228 states and 231 transitions. [2020-11-07 06:39:34,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 06:39:34,011 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 203 [2020-11-07 06:39:34,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:34,013 INFO L225 Difference]: With dead ends: 228 [2020-11-07 06:39:34,013 INFO L226 Difference]: Without dead ends: 224 [2020-11-07 06:39:34,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=259, Invalid=733, Unknown=0, NotChecked=0, Total=992 [2020-11-07 06:39:34,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-11-07 06:39:34,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 219. [2020-11-07 06:39:34,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-11-07 06:39:34,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 222 transitions. [2020-11-07 06:39:34,065 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 222 transitions. Word has length 203 [2020-11-07 06:39:34,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:34,066 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 222 transitions. [2020-11-07 06:39:34,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-07 06:39:34,066 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 222 transitions. [2020-11-07 06:39:34,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-11-07 06:39:34,069 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:34,069 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:34,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-07 06:39:34,069 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:34,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:34,070 INFO L82 PathProgramCache]: Analyzing trace with hash 89263154, now seen corresponding path program 21 times [2020-11-07 06:39:34,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:34,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915997203] [2020-11-07 06:39:34,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:34,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:34,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-11-07 06:39:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:34,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-11-07 06:39:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:34,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-11-07 06:39:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:34,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-11-07 06:39:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:34,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-07 06:39:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:34,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-11-07 06:39:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:34,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-11-07 06:39:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:34,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:39:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:34,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-11-07 06:39:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:34,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-11-07 06:39:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:34,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-11-07 06:39:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:34,703 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 324 proven. 402 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-11-07 06:39:34,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915997203] [2020-11-07 06:39:34,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:34,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-11-07 06:39:34,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391075140] [2020-11-07 06:39:34,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-07 06:39:34,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:34,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-07 06:39:34,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2020-11-07 06:39:34,708 INFO L87 Difference]: Start difference. First operand 219 states and 222 transitions. Second operand 28 states. [2020-11-07 06:39:37,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:37,696 INFO L93 Difference]: Finished difference Result 407 states and 446 transitions. [2020-11-07 06:39:37,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-07 06:39:37,697 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 213 [2020-11-07 06:39:37,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:37,701 INFO L225 Difference]: With dead ends: 407 [2020-11-07 06:39:37,701 INFO L226 Difference]: Without dead ends: 324 [2020-11-07 06:39:37,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1019, Invalid=2887, Unknown=0, NotChecked=0, Total=3906 [2020-11-07 06:39:37,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-11-07 06:39:37,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 225. [2020-11-07 06:39:37,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-11-07 06:39:37,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 228 transitions. [2020-11-07 06:39:37,748 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 228 transitions. Word has length 213 [2020-11-07 06:39:37,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:37,748 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 228 transitions. [2020-11-07 06:39:37,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-11-07 06:39:37,748 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 228 transitions. [2020-11-07 06:39:37,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-11-07 06:39:37,749 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:37,750 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:37,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-07 06:39:37,750 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:37,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:37,751 INFO L82 PathProgramCache]: Analyzing trace with hash -414687558, now seen corresponding path program 22 times [2020-11-07 06:39:37,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:37,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730184425] [2020-11-07 06:39:37,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:38,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:38,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-11-07 06:39:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:38,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:39:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:38,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-11-07 06:39:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:38,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-11-07 06:39:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:38,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-11-07 06:39:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:38,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-11-07 06:39:38,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:38,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-11-07 06:39:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:38,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-11-07 06:39:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:38,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-11-07 06:39:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:38,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-11-07 06:39:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:38,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:39:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:38,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1014 backedges. 374 proven. 420 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-11-07 06:39:38,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730184425] [2020-11-07 06:39:38,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:38,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-11-07 06:39:38,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953870256] [2020-11-07 06:39:38,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-07 06:39:38,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:38,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-07 06:39:38,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-11-07 06:39:38,134 INFO L87 Difference]: Start difference. First operand 225 states and 228 transitions. Second operand 18 states. [2020-11-07 06:39:39,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:39,484 INFO L93 Difference]: Finished difference Result 244 states and 247 transitions. [2020-11-07 06:39:39,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-07 06:39:39,485 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 219 [2020-11-07 06:39:39,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:39,487 INFO L225 Difference]: With dead ends: 244 [2020-11-07 06:39:39,488 INFO L226 Difference]: Without dead ends: 240 [2020-11-07 06:39:39,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=298, Invalid=824, Unknown=0, NotChecked=0, Total=1122 [2020-11-07 06:39:39,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-11-07 06:39:39,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 235. [2020-11-07 06:39:39,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-11-07 06:39:39,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 238 transitions. [2020-11-07 06:39:39,539 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 238 transitions. Word has length 219 [2020-11-07 06:39:39,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:39,540 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 238 transitions. [2020-11-07 06:39:39,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-07 06:39:39,540 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 238 transitions. [2020-11-07 06:39:39,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-11-07 06:39:39,542 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:39,542 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:39,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-11-07 06:39:39,543 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:39,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:39,543 INFO L82 PathProgramCache]: Analyzing trace with hash -68602075, now seen corresponding path program 23 times [2020-11-07 06:39:39,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:39,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066579776] [2020-11-07 06:39:39,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:40,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:40,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-11-07 06:39:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:40,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-11-07 06:39:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:40,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-11-07 06:39:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:40,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-11-07 06:39:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:40,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-11-07 06:39:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:40,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-11-07 06:39:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:40,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-11-07 06:39:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:40,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-11-07 06:39:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:40,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-11-07 06:39:40,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:40,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-11-07 06:39:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:40,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:39:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:40,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-11-07 06:39:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:40,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 389 proven. 475 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-11-07 06:39:40,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066579776] [2020-11-07 06:39:40,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:40,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-11-07 06:39:40,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754698559] [2020-11-07 06:39:40,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-07 06:39:40,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:40,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-07 06:39:40,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2020-11-07 06:39:40,257 INFO L87 Difference]: Start difference. First operand 235 states and 238 transitions. Second operand 30 states. [2020-11-07 06:39:43,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:43,679 INFO L93 Difference]: Finished difference Result 437 states and 479 transitions. [2020-11-07 06:39:43,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-07 06:39:43,680 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 229 [2020-11-07 06:39:43,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:43,682 INFO L225 Difference]: With dead ends: 437 [2020-11-07 06:39:43,682 INFO L226 Difference]: Without dead ends: 348 [2020-11-07 06:39:43,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1193, Invalid=3363, Unknown=0, NotChecked=0, Total=4556 [2020-11-07 06:39:43,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-11-07 06:39:43,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 241. [2020-11-07 06:39:43,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-11-07 06:39:43,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 244 transitions. [2020-11-07 06:39:43,736 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 244 transitions. Word has length 229 [2020-11-07 06:39:43,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:43,737 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 244 transitions. [2020-11-07 06:39:43,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-11-07 06:39:43,737 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 244 transitions. [2020-11-07 06:39:43,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-11-07 06:39:43,739 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:43,739 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:43,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-11-07 06:39:43,739 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:43,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:43,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1966700973, now seen corresponding path program 24 times [2020-11-07 06:39:43,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:43,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099028765] [2020-11-07 06:39:43,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:44,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:44,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-07 06:39:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:44,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 06:39:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:44,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-11-07 06:39:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:44,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-11-07 06:39:44,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:44,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:39:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:44,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-11-07 06:39:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:44,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-11-07 06:39:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:44,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-11-07 06:39:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:44,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-11-07 06:39:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:44,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-11-07 06:39:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:44,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-11-07 06:39:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:44,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-11-07 06:39:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:44,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1202 backedges. 444 proven. 494 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-11-07 06:39:44,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099028765] [2020-11-07 06:39:44,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:44,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-11-07 06:39:44,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575950032] [2020-11-07 06:39:44,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-07 06:39:44,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:44,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-07 06:39:44,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2020-11-07 06:39:44,168 INFO L87 Difference]: Start difference. First operand 241 states and 244 transitions. Second operand 19 states. [2020-11-07 06:39:45,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:45,631 INFO L93 Difference]: Finished difference Result 260 states and 263 transitions. [2020-11-07 06:39:45,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-07 06:39:45,632 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 235 [2020-11-07 06:39:45,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:45,637 INFO L225 Difference]: With dead ends: 260 [2020-11-07 06:39:45,637 INFO L226 Difference]: Without dead ends: 256 [2020-11-07 06:39:45,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=340, Invalid=920, Unknown=0, NotChecked=0, Total=1260 [2020-11-07 06:39:45,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-11-07 06:39:45,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 251. [2020-11-07 06:39:45,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-11-07 06:39:45,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 254 transitions. [2020-11-07 06:39:45,695 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 254 transitions. Word has length 235 [2020-11-07 06:39:45,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:45,696 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 254 transitions. [2020-11-07 06:39:45,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-07 06:39:45,696 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 254 transitions. [2020-11-07 06:39:45,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-11-07 06:39:45,698 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:45,699 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:45,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-11-07 06:39:45,699 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:45,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:45,701 INFO L82 PathProgramCache]: Analyzing trace with hash 534216280, now seen corresponding path program 25 times [2020-11-07 06:39:45,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:45,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56486089] [2020-11-07 06:39:45,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:46,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:46,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-07 06:39:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:46,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-11-07 06:39:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:46,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-11-07 06:39:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:46,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-11-07 06:39:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:46,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:39:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:46,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-11-07 06:39:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:46,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-11-07 06:39:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:46,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-11-07 06:39:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:46,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-11-07 06:39:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:46,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-11-07 06:39:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:46,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-11-07 06:39:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:46,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-11-07 06:39:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:46,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-11-07 06:39:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:46,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 460 proven. 554 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-11-07 06:39:46,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56486089] [2020-11-07 06:39:46,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:46,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-11-07 06:39:46,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868845003] [2020-11-07 06:39:46,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-07 06:39:46,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:46,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-07 06:39:46,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2020-11-07 06:39:46,487 INFO L87 Difference]: Start difference. First operand 251 states and 254 transitions. Second operand 32 states. [2020-11-07 06:39:50,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:50,202 INFO L93 Difference]: Finished difference Result 467 states and 512 transitions. [2020-11-07 06:39:50,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-07 06:39:50,203 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 245 [2020-11-07 06:39:50,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:50,208 INFO L225 Difference]: With dead ends: 467 [2020-11-07 06:39:50,208 INFO L226 Difference]: Without dead ends: 372 [2020-11-07 06:39:50,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1381, Invalid=3875, Unknown=0, NotChecked=0, Total=5256 [2020-11-07 06:39:50,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-11-07 06:39:50,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 257. [2020-11-07 06:39:50,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-11-07 06:39:50,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 260 transitions. [2020-11-07 06:39:50,267 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 260 transitions. Word has length 245 [2020-11-07 06:39:50,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:50,268 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 260 transitions. [2020-11-07 06:39:50,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-11-07 06:39:50,268 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 260 transitions. [2020-11-07 06:39:50,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-11-07 06:39:50,270 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:50,270 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:50,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-11-07 06:39:50,270 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:50,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:50,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1633570592, now seen corresponding path program 26 times [2020-11-07 06:39:50,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:50,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972626200] [2020-11-07 06:39:50,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:50,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:50,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-11-07 06:39:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:50,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-07 06:39:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:50,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-11-07 06:39:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:50,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-11-07 06:39:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:50,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-11-07 06:39:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:50,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-11-07 06:39:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:50,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-11-07 06:39:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:50,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:39:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:50,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-11-07 06:39:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:50,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-11-07 06:39:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:50,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-11-07 06:39:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:50,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-11-07 06:39:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:50,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-11-07 06:39:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:50,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 520 proven. 574 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-11-07 06:39:50,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972626200] [2020-11-07 06:39:50,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:50,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-11-07 06:39:50,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468602897] [2020-11-07 06:39:50,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-07 06:39:50,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:50,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-07 06:39:50,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2020-11-07 06:39:50,718 INFO L87 Difference]: Start difference. First operand 257 states and 260 transitions. Second operand 20 states. [2020-11-07 06:39:52,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:52,299 INFO L93 Difference]: Finished difference Result 276 states and 279 transitions. [2020-11-07 06:39:52,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-07 06:39:52,300 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 251 [2020-11-07 06:39:52,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:52,304 INFO L225 Difference]: With dead ends: 276 [2020-11-07 06:39:52,305 INFO L226 Difference]: Without dead ends: 272 [2020-11-07 06:39:52,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=385, Invalid=1021, Unknown=0, NotChecked=0, Total=1406 [2020-11-07 06:39:52,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-11-07 06:39:52,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 267. [2020-11-07 06:39:52,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-11-07 06:39:52,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 270 transitions. [2020-11-07 06:39:52,372 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 270 transitions. Word has length 251 [2020-11-07 06:39:52,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:52,373 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 270 transitions. [2020-11-07 06:39:52,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-07 06:39:52,373 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 270 transitions. [2020-11-07 06:39:52,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-11-07 06:39:52,377 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:52,377 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:52,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-11-07 06:39:52,377 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:52,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:52,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1932956107, now seen corresponding path program 27 times [2020-11-07 06:39:52,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:52,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54133249] [2020-11-07 06:39:52,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:53,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:53,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-11-07 06:39:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:53,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-11-07 06:39:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:53,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-11-07 06:39:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:53,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-11-07 06:39:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:53,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-11-07 06:39:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:53,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-11-07 06:39:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:53,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-11-07 06:39:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:53,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:39:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:53,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-11-07 06:39:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:53,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-11-07 06:39:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:53,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-11-07 06:39:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:53,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-11-07 06:39:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:53,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-11-07 06:39:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:53,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-11-07 06:39:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:53,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 537 proven. 639 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-11-07 06:39:53,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54133249] [2020-11-07 06:39:53,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:53,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-11-07 06:39:53,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590981294] [2020-11-07 06:39:53,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-11-07 06:39:53,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:53,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-11-07 06:39:53,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=860, Unknown=0, NotChecked=0, Total=1122 [2020-11-07 06:39:53,297 INFO L87 Difference]: Start difference. First operand 267 states and 270 transitions. Second operand 34 states. [2020-11-07 06:39:57,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:57,442 INFO L93 Difference]: Finished difference Result 497 states and 545 transitions. [2020-11-07 06:39:57,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-11-07 06:39:57,443 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 261 [2020-11-07 06:39:57,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:57,446 INFO L225 Difference]: With dead ends: 497 [2020-11-07 06:39:57,447 INFO L226 Difference]: Without dead ends: 396 [2020-11-07 06:39:57,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1246 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1583, Invalid=4423, Unknown=0, NotChecked=0, Total=6006 [2020-11-07 06:39:57,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-11-07 06:39:57,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 273. [2020-11-07 06:39:57,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-11-07 06:39:57,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 276 transitions. [2020-11-07 06:39:57,513 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 276 transitions. Word has length 261 [2020-11-07 06:39:57,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:57,513 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 276 transitions. [2020-11-07 06:39:57,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-11-07 06:39:57,513 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 276 transitions. [2020-11-07 06:39:57,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-11-07 06:39:57,515 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:57,515 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:57,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-11-07 06:39:57,516 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:57,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:57,516 INFO L82 PathProgramCache]: Analyzing trace with hash 630895699, now seen corresponding path program 28 times [2020-11-07 06:39:57,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:57,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781733614] [2020-11-07 06:39:57,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:57,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:39:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:57,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-11-07 06:39:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:57,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:39:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:57,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-11-07 06:39:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:57,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-11-07 06:39:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:57,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-11-07 06:39:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:57,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-11-07 06:39:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:57,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-11-07 06:39:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:57,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-11-07 06:39:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:57,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-11-07 06:39:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:57,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-11-07 06:39:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:57,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:39:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:57,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-11-07 06:39:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:57,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-07 06:39:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:57,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-11-07 06:39:57,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:39:58,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1626 backedges. 602 proven. 660 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-11-07 06:39:58,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781733614] [2020-11-07 06:39:58,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:39:58,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-11-07 06:39:58,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202536448] [2020-11-07 06:39:58,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-07 06:39:58,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:39:58,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-07 06:39:58,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2020-11-07 06:39:58,051 INFO L87 Difference]: Start difference. First operand 273 states and 276 transitions. Second operand 21 states. [2020-11-07 06:39:59,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:39:59,749 INFO L93 Difference]: Finished difference Result 292 states and 295 transitions. [2020-11-07 06:39:59,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-07 06:39:59,750 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 267 [2020-11-07 06:39:59,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:39:59,752 INFO L225 Difference]: With dead ends: 292 [2020-11-07 06:39:59,752 INFO L226 Difference]: Without dead ends: 288 [2020-11-07 06:39:59,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=433, Invalid=1127, Unknown=0, NotChecked=0, Total=1560 [2020-11-07 06:39:59,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-11-07 06:39:59,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 283. [2020-11-07 06:39:59,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2020-11-07 06:39:59,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 286 transitions. [2020-11-07 06:39:59,807 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 286 transitions. Word has length 267 [2020-11-07 06:39:59,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:39:59,807 INFO L481 AbstractCegarLoop]: Abstraction has 283 states and 286 transitions. [2020-11-07 06:39:59,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-11-07 06:39:59,808 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 286 transitions. [2020-11-07 06:39:59,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-11-07 06:39:59,810 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:39:59,810 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:39:59,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-11-07 06:39:59,810 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:39:59,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:39:59,811 INFO L82 PathProgramCache]: Analyzing trace with hash -406576770, now seen corresponding path program 29 times [2020-11-07 06:39:59,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:39:59,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502658662] [2020-11-07 06:39:59,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:39:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:00,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:00,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-11-07 06:40:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:00,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-11-07 06:40:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:00,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-11-07 06:40:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:00,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-11-07 06:40:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:00,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-11-07 06:40:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:00,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-11-07 06:40:00,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:00,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-11-07 06:40:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:00,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-11-07 06:40:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:00,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-11-07 06:40:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:00,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-11-07 06:40:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:00,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:40:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:00,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-11-07 06:40:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:00,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-07 06:40:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:00,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-11-07 06:40:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:00,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-11-07 06:40:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:00,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 620 proven. 730 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-11-07 06:40:00,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502658662] [2020-11-07 06:40:00,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:40:00,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-11-07 06:40:00,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154823350] [2020-11-07 06:40:00,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-07 06:40:00,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:00,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-07 06:40:00,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=965, Unknown=0, NotChecked=0, Total=1260 [2020-11-07 06:40:00,786 INFO L87 Difference]: Start difference. First operand 283 states and 286 transitions. Second operand 36 states. [2020-11-07 06:40:05,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:05,114 INFO L93 Difference]: Finished difference Result 527 states and 578 transitions. [2020-11-07 06:40:05,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-11-07 06:40:05,115 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 277 [2020-11-07 06:40:05,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:05,118 INFO L225 Difference]: With dead ends: 527 [2020-11-07 06:40:05,118 INFO L226 Difference]: Without dead ends: 420 [2020-11-07 06:40:05,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1418 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1799, Invalid=5007, Unknown=0, NotChecked=0, Total=6806 [2020-11-07 06:40:05,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2020-11-07 06:40:05,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 289. [2020-11-07 06:40:05,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-11-07 06:40:05,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 292 transitions. [2020-11-07 06:40:05,190 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 292 transitions. Word has length 277 [2020-11-07 06:40:05,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:05,191 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 292 transitions. [2020-11-07 06:40:05,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-11-07 06:40:05,191 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 292 transitions. [2020-11-07 06:40:05,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-11-07 06:40:05,193 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:05,193 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:40:05,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-11-07 06:40:05,193 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:05,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:05,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1142803450, now seen corresponding path program 30 times [2020-11-07 06:40:05,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:05,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091156931] [2020-11-07 06:40:05,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:05,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:05,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-11-07 06:40:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:05,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-07 06:40:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:05,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-11-07 06:40:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:05,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-11-07 06:40:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:05,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:40:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:05,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-11-07 06:40:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:05,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-11-07 06:40:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:05,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-11-07 06:40:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:05,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-11-07 06:40:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:05,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-11-07 06:40:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:05,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-11-07 06:40:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:05,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-11-07 06:40:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:05,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-11-07 06:40:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:05,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:40:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:05,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-11-07 06:40:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:05,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1862 backedges. 690 proven. 752 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-11-07 06:40:05,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091156931] [2020-11-07 06:40:05,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:40:05,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-11-07 06:40:05,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804375042] [2020-11-07 06:40:05,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-07 06:40:05,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:05,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-07 06:40:05,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=301, Unknown=0, NotChecked=0, Total=462 [2020-11-07 06:40:05,768 INFO L87 Difference]: Start difference. First operand 289 states and 292 transitions. Second operand 22 states. [2020-11-07 06:40:07,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:07,597 INFO L93 Difference]: Finished difference Result 308 states and 311 transitions. [2020-11-07 06:40:07,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-07 06:40:07,597 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 283 [2020-11-07 06:40:07,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:07,601 INFO L225 Difference]: With dead ends: 308 [2020-11-07 06:40:07,601 INFO L226 Difference]: Without dead ends: 304 [2020-11-07 06:40:07,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=484, Invalid=1238, Unknown=0, NotChecked=0, Total=1722 [2020-11-07 06:40:07,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-11-07 06:40:07,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 299. [2020-11-07 06:40:07,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-11-07 06:40:07,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 302 transitions. [2020-11-07 06:40:07,673 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 302 transitions. Word has length 283 [2020-11-07 06:40:07,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:07,674 INFO L481 AbstractCegarLoop]: Abstraction has 299 states and 302 transitions. [2020-11-07 06:40:07,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-07 06:40:07,674 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 302 transitions. [2020-11-07 06:40:07,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-11-07 06:40:07,676 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:07,676 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:40:07,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-11-07 06:40:07,677 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:07,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:07,677 INFO L82 PathProgramCache]: Analyzing trace with hash 568450417, now seen corresponding path program 31 times [2020-11-07 06:40:07,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:07,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318024440] [2020-11-07 06:40:07,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:08,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:08,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-11-07 06:40:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:08,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-11-07 06:40:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:08,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-11-07 06:40:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:08,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-11-07 06:40:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:08,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:40:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:08,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-11-07 06:40:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:08,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-11-07 06:40:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:08,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-11-07 06:40:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:08,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-11-07 06:40:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:08,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-11-07 06:40:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:08,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-11-07 06:40:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:08,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-11-07 06:40:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:08,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-11-07 06:40:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:08,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:40:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:08,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-11-07 06:40:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:08,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-11-07 06:40:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:08,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 709 proven. 827 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-11-07 06:40:08,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318024440] [2020-11-07 06:40:08,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:40:08,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-11-07 06:40:08,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319179605] [2020-11-07 06:40:08,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-11-07 06:40:08,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:08,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-11-07 06:40:08,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=1076, Unknown=0, NotChecked=0, Total=1406 [2020-11-07 06:40:08,725 INFO L87 Difference]: Start difference. First operand 299 states and 302 transitions. Second operand 38 states. [2020-11-07 06:40:13,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:13,798 INFO L93 Difference]: Finished difference Result 557 states and 611 transitions. [2020-11-07 06:40:13,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-11-07 06:40:13,799 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 293 [2020-11-07 06:40:13,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:13,803 INFO L225 Difference]: With dead ends: 557 [2020-11-07 06:40:13,803 INFO L226 Difference]: Without dead ends: 444 [2020-11-07 06:40:13,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1601 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2029, Invalid=5627, Unknown=0, NotChecked=0, Total=7656 [2020-11-07 06:40:13,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-11-07 06:40:13,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 305. [2020-11-07 06:40:13,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-11-07 06:40:13,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 308 transitions. [2020-11-07 06:40:13,880 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 308 transitions. Word has length 293 [2020-11-07 06:40:13,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:13,880 INFO L481 AbstractCegarLoop]: Abstraction has 305 states and 308 transitions. [2020-11-07 06:40:13,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-11-07 06:40:13,881 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 308 transitions. [2020-11-07 06:40:13,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-11-07 06:40:13,883 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:13,883 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:40:13,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-11-07 06:40:13,883 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:13,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:13,884 INFO L82 PathProgramCache]: Analyzing trace with hash -975577095, now seen corresponding path program 32 times [2020-11-07 06:40:13,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:13,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257675990] [2020-11-07 06:40:13,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:14,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:14,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-11-07 06:40:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:14,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-11-07 06:40:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:14,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-11-07 06:40:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:14,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-11-07 06:40:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:14,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-11-07 06:40:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:14,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-11-07 06:40:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:14,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-11-07 06:40:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:14,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:40:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:14,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-11-07 06:40:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:14,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-11-07 06:40:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:14,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-11-07 06:40:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:14,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-11-07 06:40:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:14,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-11-07 06:40:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:14,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-11-07 06:40:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:14,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-11-07 06:40:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:14,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-11-07 06:40:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:14,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2114 backedges. 784 proven. 850 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2020-11-07 06:40:14,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257675990] [2020-11-07 06:40:14,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:40:14,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-11-07 06:40:14,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811128210] [2020-11-07 06:40:14,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-07 06:40:14,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:14,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-07 06:40:14,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2020-11-07 06:40:14,506 INFO L87 Difference]: Start difference. First operand 305 states and 308 transitions. Second operand 23 states. [2020-11-07 06:40:16,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:16,488 INFO L93 Difference]: Finished difference Result 324 states and 327 transitions. [2020-11-07 06:40:16,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-07 06:40:16,489 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 299 [2020-11-07 06:40:16,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:16,491 INFO L225 Difference]: With dead ends: 324 [2020-11-07 06:40:16,491 INFO L226 Difference]: Without dead ends: 320 [2020-11-07 06:40:16,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=538, Invalid=1354, Unknown=0, NotChecked=0, Total=1892 [2020-11-07 06:40:16,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-11-07 06:40:16,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 315. [2020-11-07 06:40:16,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-11-07 06:40:16,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 318 transitions. [2020-11-07 06:40:16,564 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 318 transitions. Word has length 299 [2020-11-07 06:40:16,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:16,565 INFO L481 AbstractCegarLoop]: Abstraction has 315 states and 318 transitions. [2020-11-07 06:40:16,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-11-07 06:40:16,565 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 318 transitions. [2020-11-07 06:40:16,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-11-07 06:40:16,567 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:16,568 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:40:16,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-11-07 06:40:16,568 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:16,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:16,569 INFO L82 PathProgramCache]: Analyzing trace with hash 2073392548, now seen corresponding path program 33 times [2020-11-07 06:40:16,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:16,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318093557] [2020-11-07 06:40:16,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:17,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:17,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-11-07 06:40:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:17,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-11-07 06:40:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:17,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-11-07 06:40:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:17,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-11-07 06:40:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:17,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-11-07 06:40:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:17,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-11-07 06:40:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:17,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-11-07 06:40:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:17,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:40:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:17,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-11-07 06:40:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:17,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-11-07 06:40:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:17,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-11-07 06:40:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:17,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-11-07 06:40:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:17,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-11-07 06:40:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:17,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-11-07 06:40:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:17,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-11-07 06:40:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:17,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-11-07 06:40:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:17,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:40:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:17,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 804 proven. 930 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-11-07 06:40:17,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318093557] [2020-11-07 06:40:17,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:40:17,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-11-07 06:40:17,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516779489] [2020-11-07 06:40:17,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-11-07 06:40:17,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:17,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-11-07 06:40:17,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1193, Unknown=0, NotChecked=0, Total=1560 [2020-11-07 06:40:17,823 INFO L87 Difference]: Start difference. First operand 315 states and 318 transitions. Second operand 40 states. [2020-11-07 06:40:23,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:23,611 INFO L93 Difference]: Finished difference Result 587 states and 644 transitions. [2020-11-07 06:40:23,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-11-07 06:40:23,612 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 309 [2020-11-07 06:40:23,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:23,615 INFO L225 Difference]: With dead ends: 587 [2020-11-07 06:40:23,615 INFO L226 Difference]: Without dead ends: 468 [2020-11-07 06:40:23,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1795 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2273, Invalid=6283, Unknown=0, NotChecked=0, Total=8556 [2020-11-07 06:40:23,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2020-11-07 06:40:23,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 321. [2020-11-07 06:40:23,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-11-07 06:40:23,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 324 transitions. [2020-11-07 06:40:23,714 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 324 transitions. Word has length 309 [2020-11-07 06:40:23,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:23,714 INFO L481 AbstractCegarLoop]: Abstraction has 321 states and 324 transitions. [2020-11-07 06:40:23,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-11-07 06:40:23,715 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 324 transitions. [2020-11-07 06:40:23,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-11-07 06:40:23,717 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:23,717 INFO L422 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:40:23,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-11-07 06:40:23,718 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:23,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:23,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1569155116, now seen corresponding path program 34 times [2020-11-07 06:40:23,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:23,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738148173] [2020-11-07 06:40:23,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:24,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:24,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-11-07 06:40:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:24,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:40:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:24,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-11-07 06:40:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:24,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-11-07 06:40:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:24,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-11-07 06:40:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:24,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-11-07 06:40:24,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:24,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-11-07 06:40:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:24,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-11-07 06:40:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:24,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-11-07 06:40:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:24,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-11-07 06:40:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:24,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:40:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:24,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-11-07 06:40:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:24,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-11-07 06:40:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:24,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-11-07 06:40:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:24,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-11-07 06:40:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:24,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-11-07 06:40:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:24,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-11-07 06:40:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:24,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2382 backedges. 884 proven. 954 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2020-11-07 06:40:24,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738148173] [2020-11-07 06:40:24,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:40:24,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-11-07 06:40:24,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691207464] [2020-11-07 06:40:24,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-11-07 06:40:24,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:24,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-11-07 06:40:24,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=354, Unknown=0, NotChecked=0, Total=552 [2020-11-07 06:40:24,472 INFO L87 Difference]: Start difference. First operand 321 states and 324 transitions. Second operand 24 states. [2020-11-07 06:40:26,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:26,568 INFO L93 Difference]: Finished difference Result 340 states and 343 transitions. [2020-11-07 06:40:26,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-07 06:40:26,569 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 315 [2020-11-07 06:40:26,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:26,572 INFO L225 Difference]: With dead ends: 340 [2020-11-07 06:40:26,572 INFO L226 Difference]: Without dead ends: 336 [2020-11-07 06:40:26,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=595, Invalid=1475, Unknown=0, NotChecked=0, Total=2070 [2020-11-07 06:40:26,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-11-07 06:40:26,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 331. [2020-11-07 06:40:26,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-11-07 06:40:26,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 334 transitions. [2020-11-07 06:40:26,648 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 334 transitions. Word has length 315 [2020-11-07 06:40:26,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:26,649 INFO L481 AbstractCegarLoop]: Abstraction has 331 states and 334 transitions. [2020-11-07 06:40:26,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-11-07 06:40:26,649 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 334 transitions. [2020-11-07 06:40:26,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-11-07 06:40:26,652 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:26,652 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:40:26,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-11-07 06:40:26,652 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:26,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:26,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1200134679, now seen corresponding path program 35 times [2020-11-07 06:40:26,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:26,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785008702] [2020-11-07 06:40:26,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:27,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:27,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-11-07 06:40:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:27,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-11-07 06:40:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:27,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-11-07 06:40:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:27,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-11-07 06:40:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:27,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-11-07 06:40:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:27,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-11-07 06:40:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:27,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-11-07 06:40:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:27,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-11-07 06:40:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:27,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-11-07 06:40:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:27,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-11-07 06:40:27,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:27,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:40:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:27,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-11-07 06:40:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:27,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-11-07 06:40:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:27,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-11-07 06:40:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:27,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-11-07 06:40:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:27,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-11-07 06:40:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:27,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-11-07 06:40:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:27,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-11-07 06:40:27,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:28,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 905 proven. 1039 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2020-11-07 06:40:28,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785008702] [2020-11-07 06:40:28,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:40:28,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-11-07 06:40:28,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938050763] [2020-11-07 06:40:28,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-11-07 06:40:28,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:28,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-11-07 06:40:28,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=1316, Unknown=0, NotChecked=0, Total=1722 [2020-11-07 06:40:28,078 INFO L87 Difference]: Start difference. First operand 331 states and 334 transitions. Second operand 42 states. [2020-11-07 06:40:33,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:33,986 INFO L93 Difference]: Finished difference Result 617 states and 677 transitions. [2020-11-07 06:40:33,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-11-07 06:40:33,987 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 325 [2020-11-07 06:40:33,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:33,992 INFO L225 Difference]: With dead ends: 617 [2020-11-07 06:40:33,992 INFO L226 Difference]: Without dead ends: 492 [2020-11-07 06:40:33,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2000 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2531, Invalid=6975, Unknown=0, NotChecked=0, Total=9506 [2020-11-07 06:40:33,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-11-07 06:40:34,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 337. [2020-11-07 06:40:34,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-11-07 06:40:34,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 340 transitions. [2020-11-07 06:40:34,076 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 340 transitions. Word has length 325 [2020-11-07 06:40:34,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:34,076 INFO L481 AbstractCegarLoop]: Abstraction has 337 states and 340 transitions. [2020-11-07 06:40:34,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-11-07 06:40:34,076 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 340 transitions. [2020-11-07 06:40:34,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-11-07 06:40:34,079 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:34,079 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:40:34,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-11-07 06:40:34,079 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:34,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:34,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1785430881, now seen corresponding path program 36 times [2020-11-07 06:40:34,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:34,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644362275] [2020-11-07 06:40:34,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:34,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:34,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-11-07 06:40:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:34,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-11-07 06:40:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:34,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-11-07 06:40:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:34,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-11-07 06:40:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:34,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:40:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:34,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-11-07 06:40:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:34,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-11-07 06:40:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:34,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-11-07 06:40:34,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:34,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-11-07 06:40:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:34,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-11-07 06:40:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:34,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-11-07 06:40:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:34,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-11-07 06:40:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:34,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-11-07 06:40:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:34,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:40:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:34,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-11-07 06:40:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:34,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-11-07 06:40:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:34,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-11-07 06:40:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:34,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-11-07 06:40:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:34,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2666 backedges. 990 proven. 1064 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2020-11-07 06:40:34,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644362275] [2020-11-07 06:40:34,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:40:34,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-11-07 06:40:34,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917820044] [2020-11-07 06:40:34,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-07 06:40:34,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:34,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-07 06:40:34,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=382, Unknown=0, NotChecked=0, Total=600 [2020-11-07 06:40:34,903 INFO L87 Difference]: Start difference. First operand 337 states and 340 transitions. Second operand 25 states. [2020-11-07 06:40:37,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:37,076 INFO L93 Difference]: Finished difference Result 356 states and 359 transitions. [2020-11-07 06:40:37,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-11-07 06:40:37,077 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 331 [2020-11-07 06:40:37,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:37,080 INFO L225 Difference]: With dead ends: 356 [2020-11-07 06:40:37,080 INFO L226 Difference]: Without dead ends: 352 [2020-11-07 06:40:37,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=655, Invalid=1601, Unknown=0, NotChecked=0, Total=2256 [2020-11-07 06:40:37,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-11-07 06:40:37,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 347. [2020-11-07 06:40:37,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-11-07 06:40:37,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 350 transitions. [2020-11-07 06:40:37,161 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 350 transitions. Word has length 331 [2020-11-07 06:40:37,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:37,161 INFO L481 AbstractCegarLoop]: Abstraction has 347 states and 350 transitions. [2020-11-07 06:40:37,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-11-07 06:40:37,161 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 350 transitions. [2020-11-07 06:40:37,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-11-07 06:40:37,164 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:37,164 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:40:37,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-11-07 06:40:37,164 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:37,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:37,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1409874634, now seen corresponding path program 37 times [2020-11-07 06:40:37,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:37,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508148777] [2020-11-07 06:40:37,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:38,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:38,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-11-07 06:40:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:38,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-11-07 06:40:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:38,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-11-07 06:40:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:38,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-11-07 06:40:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:38,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:40:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:38,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-11-07 06:40:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:38,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-11-07 06:40:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:38,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-11-07 06:40:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:38,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-11-07 06:40:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:38,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-11-07 06:40:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:38,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-11-07 06:40:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:38,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-11-07 06:40:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:38,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-11-07 06:40:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:38,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:40:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:38,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-11-07 06:40:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:38,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-11-07 06:40:38,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:38,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-11-07 06:40:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:38,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-11-07 06:40:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:38,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-11-07 06:40:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:38,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 1012 proven. 1154 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-11-07 06:40:38,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508148777] [2020-11-07 06:40:38,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:40:38,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-11-07 06:40:38,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679794885] [2020-11-07 06:40:38,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-11-07 06:40:38,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:38,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-11-07 06:40:38,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=1445, Unknown=0, NotChecked=0, Total=1892 [2020-11-07 06:40:38,728 INFO L87 Difference]: Start difference. First operand 347 states and 350 transitions. Second operand 44 states. [2020-11-07 06:40:45,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:45,000 INFO L93 Difference]: Finished difference Result 647 states and 710 transitions. [2020-11-07 06:40:45,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-11-07 06:40:45,004 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 341 [2020-11-07 06:40:45,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:45,007 INFO L225 Difference]: With dead ends: 647 [2020-11-07 06:40:45,007 INFO L226 Difference]: Without dead ends: 516 [2020-11-07 06:40:45,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2216 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2803, Invalid=7703, Unknown=0, NotChecked=0, Total=10506 [2020-11-07 06:40:45,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-11-07 06:40:45,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 353. [2020-11-07 06:40:45,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-11-07 06:40:45,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 356 transitions. [2020-11-07 06:40:45,107 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 356 transitions. Word has length 341 [2020-11-07 06:40:45,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:45,107 INFO L481 AbstractCegarLoop]: Abstraction has 353 states and 356 transitions. [2020-11-07 06:40:45,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-11-07 06:40:45,107 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 356 transitions. [2020-11-07 06:40:45,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-11-07 06:40:45,110 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:45,110 INFO L422 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:40:45,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-11-07 06:40:45,111 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:45,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:45,112 INFO L82 PathProgramCache]: Analyzing trace with hash -61944494, now seen corresponding path program 38 times [2020-11-07 06:40:45,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:45,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952923972] [2020-11-07 06:40:45,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:45,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:45,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-11-07 06:40:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:45,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-11-07 06:40:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:45,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-11-07 06:40:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:45,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-11-07 06:40:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:45,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-11-07 06:40:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:45,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-11-07 06:40:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:45,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-11-07 06:40:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:45,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:40:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:45,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-11-07 06:40:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:45,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-07 06:40:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:45,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-11-07 06:40:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:45,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-11-07 06:40:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:45,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-11-07 06:40:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:45,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-11-07 06:40:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:45,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-11-07 06:40:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:45,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-11-07 06:40:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:45,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-11-07 06:40:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:45,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-11-07 06:40:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:45,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-11-07 06:40:45,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:45,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2966 backedges. 1102 proven. 1180 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2020-11-07 06:40:45,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952923972] [2020-11-07 06:40:45,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:40:45,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-11-07 06:40:45,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763367913] [2020-11-07 06:40:45,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-11-07 06:40:45,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:45,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-11-07 06:40:45,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=411, Unknown=0, NotChecked=0, Total=650 [2020-11-07 06:40:45,981 INFO L87 Difference]: Start difference. First operand 353 states and 356 transitions. Second operand 26 states. [2020-11-07 06:40:48,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:48,423 INFO L93 Difference]: Finished difference Result 372 states and 375 transitions. [2020-11-07 06:40:48,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-07 06:40:48,425 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 347 [2020-11-07 06:40:48,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:48,428 INFO L225 Difference]: With dead ends: 372 [2020-11-07 06:40:48,428 INFO L226 Difference]: Without dead ends: 368 [2020-11-07 06:40:48,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=718, Invalid=1732, Unknown=0, NotChecked=0, Total=2450 [2020-11-07 06:40:48,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-11-07 06:40:48,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 363. [2020-11-07 06:40:48,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-11-07 06:40:48,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 366 transitions. [2020-11-07 06:40:48,530 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 366 transitions. Word has length 347 [2020-11-07 06:40:48,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:48,530 INFO L481 AbstractCegarLoop]: Abstraction has 363 states and 366 transitions. [2020-11-07 06:40:48,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-11-07 06:40:48,530 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 366 transitions. [2020-11-07 06:40:48,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-11-07 06:40:48,533 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:48,533 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:40:48,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-11-07 06:40:48,534 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:48,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:48,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1375189059, now seen corresponding path program 39 times [2020-11-07 06:40:48,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:48,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776900496] [2020-11-07 06:40:48,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:49,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:49,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-11-07 06:40:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:49,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-11-07 06:40:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:49,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-11-07 06:40:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:49,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-11-07 06:40:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:49,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-11-07 06:40:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:49,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-11-07 06:40:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:49,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-11-07 06:40:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:49,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:40:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:49,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-11-07 06:40:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:49,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-07 06:40:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:49,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-11-07 06:40:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:49,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-11-07 06:40:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:49,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-11-07 06:40:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:49,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-11-07 06:40:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:49,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-11-07 06:40:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:49,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-11-07 06:40:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:49,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-11-07 06:40:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:49,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-11-07 06:40:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:49,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-11-07 06:40:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:49,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-11-07 06:40:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:50,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 1125 proven. 1275 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2020-11-07 06:40:50,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776900496] [2020-11-07 06:40:50,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:40:50,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-11-07 06:40:50,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404840716] [2020-11-07 06:40:50,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-11-07 06:40:50,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:50,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-11-07 06:40:50,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=490, Invalid=1580, Unknown=0, NotChecked=0, Total=2070 [2020-11-07 06:40:50,093 INFO L87 Difference]: Start difference. First operand 363 states and 366 transitions. Second operand 46 states. [2020-11-07 06:40:56,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:40:56,992 INFO L93 Difference]: Finished difference Result 677 states and 743 transitions. [2020-11-07 06:40:56,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-11-07 06:40:56,993 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 357 [2020-11-07 06:40:56,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:40:56,995 INFO L225 Difference]: With dead ends: 677 [2020-11-07 06:40:56,995 INFO L226 Difference]: Without dead ends: 540 [2020-11-07 06:40:56,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2443 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=3089, Invalid=8467, Unknown=0, NotChecked=0, Total=11556 [2020-11-07 06:40:56,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2020-11-07 06:40:57,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 369. [2020-11-07 06:40:57,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-11-07 06:40:57,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 372 transitions. [2020-11-07 06:40:57,104 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 372 transitions. Word has length 357 [2020-11-07 06:40:57,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:40:57,105 INFO L481 AbstractCegarLoop]: Abstraction has 369 states and 372 transitions. [2020-11-07 06:40:57,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-11-07 06:40:57,105 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 372 transitions. [2020-11-07 06:40:57,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-11-07 06:40:57,107 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:40:57,108 INFO L422 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:40:57,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-11-07 06:40:57,108 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:40:57,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:40:57,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1588070981, now seen corresponding path program 40 times [2020-11-07 06:40:57,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:40:57,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168577368] [2020-11-07 06:40:57,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:40:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:57,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:40:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:57,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-11-07 06:40:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:57,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:40:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:57,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-11-07 06:40:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:57,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-11-07 06:40:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:57,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-11-07 06:40:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:57,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-11-07 06:40:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:57,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-11-07 06:40:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:57,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-11-07 06:40:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:57,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-11-07 06:40:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:57,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-11-07 06:40:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:57,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:40:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:57,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-11-07 06:40:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:57,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-11-07 06:40:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:57,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-11-07 06:40:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:57,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-11-07 06:40:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:57,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-11-07 06:40:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:57,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-11-07 06:40:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:57,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-11-07 06:40:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:57,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-11-07 06:40:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:57,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-11-07 06:40:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:40:57,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3282 backedges. 1220 proven. 1302 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2020-11-07 06:40:57,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168577368] [2020-11-07 06:40:57,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:40:57,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-11-07 06:40:57,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186404223] [2020-11-07 06:40:57,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-07 06:40:57,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:40:57,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-07 06:40:57,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=441, Unknown=0, NotChecked=0, Total=702 [2020-11-07 06:40:57,962 INFO L87 Difference]: Start difference. First operand 369 states and 372 transitions. Second operand 27 states. [2020-11-07 06:41:00,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:41:00,590 INFO L93 Difference]: Finished difference Result 388 states and 391 transitions. [2020-11-07 06:41:00,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-11-07 06:41:00,591 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 363 [2020-11-07 06:41:00,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:41:00,594 INFO L225 Difference]: With dead ends: 388 [2020-11-07 06:41:00,595 INFO L226 Difference]: Without dead ends: 384 [2020-11-07 06:41:00,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=784, Invalid=1868, Unknown=0, NotChecked=0, Total=2652 [2020-11-07 06:41:00,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2020-11-07 06:41:00,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 379. [2020-11-07 06:41:00,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-11-07 06:41:00,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 382 transitions. [2020-11-07 06:41:00,709 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 382 transitions. Word has length 363 [2020-11-07 06:41:00,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:41:00,709 INFO L481 AbstractCegarLoop]: Abstraction has 379 states and 382 transitions. [2020-11-07 06:41:00,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-11-07 06:41:00,709 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 382 transitions. [2020-11-07 06:41:00,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-11-07 06:41:00,712 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:41:00,713 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:41:00,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-11-07 06:41:00,713 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:41:00,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:41:00,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1541656336, now seen corresponding path program 41 times [2020-11-07 06:41:00,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:41:00,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025993638] [2020-11-07 06:41:00,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:41:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:41:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-11-07 06:41:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 06:41:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-11-07 06:41:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-11-07 06:41:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-11-07 06:41:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-11-07 06:41:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-11-07 06:41:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-11-07 06:41:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-11-07 06:41:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-11-07 06:41:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:41:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-11-07 06:41:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-11-07 06:41:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-11-07 06:41:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-11-07 06:41:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-11-07 06:41:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-11-07 06:41:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-11-07 06:41:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-11-07 06:41:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-11-07 06:41:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-11-07 06:41:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:02,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 1244 proven. 1402 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-11-07 06:41:02,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025993638] [2020-11-07 06:41:02,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:41:02,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-11-07 06:41:02,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029569187] [2020-11-07 06:41:02,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-11-07 06:41:02,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:41:02,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-11-07 06:41:02,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=535, Invalid=1721, Unknown=0, NotChecked=0, Total=2256 [2020-11-07 06:41:02,636 INFO L87 Difference]: Start difference. First operand 379 states and 382 transitions. Second operand 48 states. [2020-11-07 06:41:10,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:41:10,886 INFO L93 Difference]: Finished difference Result 707 states and 776 transitions. [2020-11-07 06:41:10,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-11-07 06:41:10,887 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 373 [2020-11-07 06:41:10,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:41:10,892 INFO L225 Difference]: With dead ends: 707 [2020-11-07 06:41:10,892 INFO L226 Difference]: Without dead ends: 564 [2020-11-07 06:41:10,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2681 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=3389, Invalid=9267, Unknown=0, NotChecked=0, Total=12656 [2020-11-07 06:41:10,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-11-07 06:41:10,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 385. [2020-11-07 06:41:10,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-11-07 06:41:10,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 388 transitions. [2020-11-07 06:41:10,964 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 388 transitions. Word has length 373 [2020-11-07 06:41:10,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:41:10,964 INFO L481 AbstractCegarLoop]: Abstraction has 385 states and 388 transitions. [2020-11-07 06:41:10,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-11-07 06:41:10,964 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 388 transitions. [2020-11-07 06:41:10,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-11-07 06:41:10,966 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:41:10,966 INFO L422 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:41:10,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-11-07 06:41:10,967 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:41:10,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:41:10,967 INFO L82 PathProgramCache]: Analyzing trace with hash -885660808, now seen corresponding path program 42 times [2020-11-07 06:41:10,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:41:10,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346237118] [2020-11-07 06:41:10,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:41:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:41:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-11-07 06:41:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-11-07 06:41:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-11-07 06:41:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-11-07 06:41:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:41:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-11-07 06:41:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-11-07 06:41:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-11-07 06:41:11,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-11-07 06:41:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-11-07 06:41:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-11-07 06:41:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-11-07 06:41:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-11-07 06:41:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:41:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-11-07 06:41:11,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-11-07 06:41:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-11-07 06:41:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-11-07 06:41:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-11-07 06:41:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-11-07 06:41:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-11-07 06:41:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:11,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3614 backedges. 1344 proven. 1430 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-11-07 06:41:11,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346237118] [2020-11-07 06:41:11,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:41:11,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-11-07 06:41:11,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209059105] [2020-11-07 06:41:11,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-07 06:41:11,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:41:11,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-07 06:41:11,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=472, Unknown=0, NotChecked=0, Total=756 [2020-11-07 06:41:11,838 INFO L87 Difference]: Start difference. First operand 385 states and 388 transitions. Second operand 28 states. [2020-11-07 06:41:14,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:41:14,584 INFO L93 Difference]: Finished difference Result 404 states and 407 transitions. [2020-11-07 06:41:14,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-07 06:41:14,585 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 379 [2020-11-07 06:41:14,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:41:14,589 INFO L225 Difference]: With dead ends: 404 [2020-11-07 06:41:14,589 INFO L226 Difference]: Without dead ends: 400 [2020-11-07 06:41:14,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=853, Invalid=2009, Unknown=0, NotChecked=0, Total=2862 [2020-11-07 06:41:14,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-11-07 06:41:14,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 395. [2020-11-07 06:41:14,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-11-07 06:41:14,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 398 transitions. [2020-11-07 06:41:14,699 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 398 transitions. Word has length 379 [2020-11-07 06:41:14,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:41:14,700 INFO L481 AbstractCegarLoop]: Abstraction has 395 states and 398 transitions. [2020-11-07 06:41:14,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-11-07 06:41:14,700 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 398 transitions. [2020-11-07 06:41:14,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-11-07 06:41:14,703 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:41:14,703 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:41:14,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-11-07 06:41:14,704 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:41:14,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:41:14,704 INFO L82 PathProgramCache]: Analyzing trace with hash 159278691, now seen corresponding path program 43 times [2020-11-07 06:41:14,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:41:14,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837648891] [2020-11-07 06:41:14,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:41:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:16,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:41:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:16,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-11-07 06:41:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:16,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-11-07 06:41:16,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:16,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-11-07 06:41:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:16,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-11-07 06:41:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:16,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:41:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:16,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-11-07 06:41:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:16,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-11-07 06:41:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:16,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-11-07 06:41:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:16,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-11-07 06:41:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:16,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-11-07 06:41:16,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:16,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-11-07 06:41:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:16,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-11-07 06:41:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:16,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-11-07 06:41:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:16,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:41:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:16,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-11-07 06:41:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:16,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-11-07 06:41:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:16,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-11-07 06:41:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:16,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-11-07 06:41:16,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:16,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-11-07 06:41:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:16,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-11-07 06:41:16,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:16,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-11-07 06:41:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:16,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-11-07 06:41:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:16,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 1369 proven. 1535 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2020-11-07 06:41:16,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837648891] [2020-11-07 06:41:16,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:41:16,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-11-07 06:41:16,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027834440] [2020-11-07 06:41:16,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-11-07 06:41:16,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:41:16,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-11-07 06:41:16,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=582, Invalid=1868, Unknown=0, NotChecked=0, Total=2450 [2020-11-07 06:41:16,691 INFO L87 Difference]: Start difference. First operand 395 states and 398 transitions. Second operand 50 states. [2020-11-07 06:41:24,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:41:24,852 INFO L93 Difference]: Finished difference Result 737 states and 809 transitions. [2020-11-07 06:41:24,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-11-07 06:41:24,853 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 389 [2020-11-07 06:41:24,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:41:24,857 INFO L225 Difference]: With dead ends: 737 [2020-11-07 06:41:24,858 INFO L226 Difference]: Without dead ends: 588 [2020-11-07 06:41:24,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2930 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=3703, Invalid=10103, Unknown=0, NotChecked=0, Total=13806 [2020-11-07 06:41:24,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2020-11-07 06:41:24,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 401. [2020-11-07 06:41:24,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-11-07 06:41:24,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 404 transitions. [2020-11-07 06:41:24,938 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 404 transitions. Word has length 389 [2020-11-07 06:41:24,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:41:24,938 INFO L481 AbstractCegarLoop]: Abstraction has 401 states and 404 transitions. [2020-11-07 06:41:24,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-11-07 06:41:24,938 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 404 transitions. [2020-11-07 06:41:24,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-11-07 06:41:24,941 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:41:24,942 INFO L422 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:41:24,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-11-07 06:41:24,942 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:41:24,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:41:24,943 INFO L82 PathProgramCache]: Analyzing trace with hash -718141205, now seen corresponding path program 44 times [2020-11-07 06:41:24,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:41:24,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625812924] [2020-11-07 06:41:24,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:41:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:25,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:41:25,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:25,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-11-07 06:41:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:25,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-11-07 06:41:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:25,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-11-07 06:41:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:25,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-11-07 06:41:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:25,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-11-07 06:41:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:25,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-11-07 06:41:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:25,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-11-07 06:41:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:25,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:41:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:25,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-11-07 06:41:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:25,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-11-07 06:41:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:25,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-11-07 06:41:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:25,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-11-07 06:41:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:25,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-11-07 06:41:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:25,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-11-07 06:41:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:25,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-11-07 06:41:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:25,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-11-07 06:41:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:25,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-11-07 06:41:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:25,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-11-07 06:41:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:25,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-11-07 06:41:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:25,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2020-11-07 06:41:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:25,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-11-07 06:41:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:25,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2020-11-07 06:41:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:25,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3962 backedges. 1474 proven. 1564 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2020-11-07 06:41:25,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625812924] [2020-11-07 06:41:25,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:41:25,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-11-07 06:41:25,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245690233] [2020-11-07 06:41:25,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-07 06:41:25,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:41:25,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-07 06:41:25,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=504, Unknown=0, NotChecked=0, Total=812 [2020-11-07 06:41:25,946 INFO L87 Difference]: Start difference. First operand 401 states and 404 transitions. Second operand 29 states. [2020-11-07 06:41:28,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:41:28,820 INFO L93 Difference]: Finished difference Result 420 states and 423 transitions. [2020-11-07 06:41:28,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-11-07 06:41:28,821 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 395 [2020-11-07 06:41:28,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:41:28,824 INFO L225 Difference]: With dead ends: 420 [2020-11-07 06:41:28,824 INFO L226 Difference]: Without dead ends: 416 [2020-11-07 06:41:28,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=925, Invalid=2155, Unknown=0, NotChecked=0, Total=3080 [2020-11-07 06:41:28,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-11-07 06:41:28,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 411. [2020-11-07 06:41:28,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2020-11-07 06:41:28,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 414 transitions. [2020-11-07 06:41:28,898 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 414 transitions. Word has length 395 [2020-11-07 06:41:28,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:41:28,899 INFO L481 AbstractCegarLoop]: Abstraction has 411 states and 414 transitions. [2020-11-07 06:41:28,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-11-07 06:41:28,900 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 414 transitions. [2020-11-07 06:41:28,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-11-07 06:41:28,903 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:41:28,903 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:41:28,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-11-07 06:41:28,904 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:41:28,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:41:28,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1190356970, now seen corresponding path program 45 times [2020-11-07 06:41:28,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:41:28,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7376809] [2020-11-07 06:41:28,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:41:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:30,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:41:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:30,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-11-07 06:41:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:30,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-11-07 06:41:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:30,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-11-07 06:41:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:30,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-11-07 06:41:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:30,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-11-07 06:41:30,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:30,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-11-07 06:41:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:30,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-11-07 06:41:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:30,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:41:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:30,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-11-07 06:41:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:30,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-11-07 06:41:30,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:30,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-11-07 06:41:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:30,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-11-07 06:41:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:30,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-11-07 06:41:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:30,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-11-07 06:41:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:30,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-11-07 06:41:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:30,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-11-07 06:41:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:30,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-11-07 06:41:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:30,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-11-07 06:41:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:30,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-11-07 06:41:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:30,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2020-11-07 06:41:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:30,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-11-07 06:41:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:30,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2020-11-07 06:41:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:30,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-11-07 06:41:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:31,117 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 1500 proven. 1674 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-11-07 06:41:31,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7376809] [2020-11-07 06:41:31,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:41:31,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-11-07 06:41:31,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845757966] [2020-11-07 06:41:31,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-11-07 06:41:31,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:41:31,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-11-07 06:41:31,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=631, Invalid=2021, Unknown=0, NotChecked=0, Total=2652 [2020-11-07 06:41:31,120 INFO L87 Difference]: Start difference. First operand 411 states and 414 transitions. Second operand 52 states. [2020-11-07 06:41:40,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:41:40,862 INFO L93 Difference]: Finished difference Result 767 states and 842 transitions. [2020-11-07 06:41:40,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-11-07 06:41:40,863 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 405 [2020-11-07 06:41:40,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:41:40,866 INFO L225 Difference]: With dead ends: 767 [2020-11-07 06:41:40,867 INFO L226 Difference]: Without dead ends: 612 [2020-11-07 06:41:40,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3190 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=4031, Invalid=10975, Unknown=0, NotChecked=0, Total=15006 [2020-11-07 06:41:40,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2020-11-07 06:41:41,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 417. [2020-11-07 06:41:41,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-11-07 06:41:41,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 420 transitions. [2020-11-07 06:41:41,016 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 420 transitions. Word has length 405 [2020-11-07 06:41:41,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:41:41,017 INFO L481 AbstractCegarLoop]: Abstraction has 417 states and 420 transitions. [2020-11-07 06:41:41,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-11-07 06:41:41,017 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 420 transitions. [2020-11-07 06:41:41,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-11-07 06:41:41,020 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:41:41,020 INFO L422 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:41:41,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-11-07 06:41:41,021 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:41:41,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:41:41,021 INFO L82 PathProgramCache]: Analyzing trace with hash 393882270, now seen corresponding path program 46 times [2020-11-07 06:41:41,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:41:41,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448754384] [2020-11-07 06:41:41,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:41:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:41,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:41:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:41,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-11-07 06:41:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:41,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:41:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:41,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-11-07 06:41:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:41,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-11-07 06:41:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:41,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-11-07 06:41:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:41,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-11-07 06:41:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:41,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-11-07 06:41:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:41,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-11-07 06:41:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:41,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-11-07 06:41:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:41,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-11-07 06:41:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:41,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:41:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:41,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-11-07 06:41:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:41,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-11-07 06:41:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:41,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-11-07 06:41:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:41,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-11-07 06:41:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:41,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-11-07 06:41:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:41,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-11-07 06:41:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:41,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-11-07 06:41:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:41,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-11-07 06:41:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:41,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-11-07 06:41:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:41,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-11-07 06:41:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:41,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-11-07 06:41:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:41,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2020-11-07 06:41:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:42,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4326 backedges. 1610 proven. 1704 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2020-11-07 06:41:42,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448754384] [2020-11-07 06:41:42,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:41:42,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-11-07 06:41:42,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117770958] [2020-11-07 06:41:42,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-11-07 06:41:42,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:41:42,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-11-07 06:41:42,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=537, Unknown=0, NotChecked=0, Total=870 [2020-11-07 06:41:42,119 INFO L87 Difference]: Start difference. First operand 417 states and 420 transitions. Second operand 30 states. [2020-11-07 06:41:45,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:41:45,318 INFO L93 Difference]: Finished difference Result 436 states and 439 transitions. [2020-11-07 06:41:45,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-07 06:41:45,319 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 411 [2020-11-07 06:41:45,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:41:45,322 INFO L225 Difference]: With dead ends: 436 [2020-11-07 06:41:45,322 INFO L226 Difference]: Without dead ends: 432 [2020-11-07 06:41:45,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1000, Invalid=2306, Unknown=0, NotChecked=0, Total=3306 [2020-11-07 06:41:45,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-11-07 06:41:45,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 427. [2020-11-07 06:41:45,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-11-07 06:41:45,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 430 transitions. [2020-11-07 06:41:45,402 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 430 transitions. Word has length 411 [2020-11-07 06:41:45,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:41:45,403 INFO L481 AbstractCegarLoop]: Abstraction has 427 states and 430 transitions. [2020-11-07 06:41:45,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-11-07 06:41:45,403 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 430 transitions. [2020-11-07 06:41:45,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2020-11-07 06:41:45,405 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:41:45,405 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:41:45,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-11-07 06:41:45,406 INFO L429 AbstractCegarLoop]: === Iteration 50 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:41:45,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:41:45,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1481143817, now seen corresponding path program 47 times [2020-11-07 06:41:45,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:41:45,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876756119] [2020-11-07 06:41:45,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:41:45,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:47,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:41:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:47,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-11-07 06:41:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:47,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-11-07 06:41:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:47,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-11-07 06:41:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:47,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-11-07 06:41:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:47,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-11-07 06:41:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:47,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-11-07 06:41:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:47,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-11-07 06:41:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:47,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-11-07 06:41:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:47,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-11-07 06:41:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:47,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-11-07 06:41:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:47,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:41:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:47,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-11-07 06:41:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:47,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-11-07 06:41:47,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:47,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-11-07 06:41:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:47,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-11-07 06:41:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:47,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-11-07 06:41:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:47,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-11-07 06:41:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:47,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-11-07 06:41:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:47,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-11-07 06:41:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:47,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-11-07 06:41:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:47,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-11-07 06:41:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:47,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-11-07 06:41:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:47,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2020-11-07 06:41:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:47,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-11-07 06:41:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:47,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 1637 proven. 1819 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2020-11-07 06:41:47,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876756119] [2020-11-07 06:41:47,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:41:47,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-11-07 06:41:47,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085842999] [2020-11-07 06:41:47,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-11-07 06:41:47,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:41:47,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-11-07 06:41:47,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=682, Invalid=2180, Unknown=0, NotChecked=0, Total=2862 [2020-11-07 06:41:47,810 INFO L87 Difference]: Start difference. First operand 427 states and 430 transitions. Second operand 54 states. [2020-11-07 06:41:57,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:41:57,589 INFO L93 Difference]: Finished difference Result 797 states and 875 transitions. [2020-11-07 06:41:57,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-11-07 06:41:57,590 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 421 [2020-11-07 06:41:57,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:41:57,594 INFO L225 Difference]: With dead ends: 797 [2020-11-07 06:41:57,595 INFO L226 Difference]: Without dead ends: 636 [2020-11-07 06:41:57,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3461 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=4373, Invalid=11883, Unknown=0, NotChecked=0, Total=16256 [2020-11-07 06:41:57,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2020-11-07 06:41:57,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 433. [2020-11-07 06:41:57,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-11-07 06:41:57,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 436 transitions. [2020-11-07 06:41:57,713 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 436 transitions. Word has length 421 [2020-11-07 06:41:57,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:41:57,713 INFO L481 AbstractCegarLoop]: Abstraction has 433 states and 436 transitions. [2020-11-07 06:41:57,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-11-07 06:41:57,714 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 436 transitions. [2020-11-07 06:41:57,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-11-07 06:41:57,717 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:41:57,717 INFO L422 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 25, 25, 25, 25, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:41:57,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-11-07 06:41:57,717 INFO L429 AbstractCegarLoop]: === Iteration 51 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:41:57,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:41:57,718 INFO L82 PathProgramCache]: Analyzing trace with hash -141559663, now seen corresponding path program 48 times [2020-11-07 06:41:57,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:41:57,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685817189] [2020-11-07 06:41:57,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:41:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:58,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:41:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:58,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-11-07 06:41:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:58,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-11-07 06:41:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:58,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-11-07 06:41:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:58,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-11-07 06:41:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:58,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:41:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:58,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-11-07 06:41:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:58,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-07 06:41:58,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:58,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-11-07 06:41:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:58,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-11-07 06:41:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:58,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-11-07 06:41:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:58,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-11-07 06:41:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:58,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-11-07 06:41:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:58,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-11-07 06:41:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:58,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-11-07 06:41:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:58,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-11-07 06:41:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:58,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-11-07 06:41:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:58,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-11-07 06:41:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:58,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-11-07 06:41:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:58,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-11-07 06:41:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:58,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-11-07 06:41:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:58,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2020-11-07 06:41:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:58,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-11-07 06:41:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:58,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-11-07 06:41:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:58,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2020-11-07 06:41:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:41:58,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4706 backedges. 1752 proven. 1850 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2020-11-07 06:41:58,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685817189] [2020-11-07 06:41:58,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:41:58,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-11-07 06:41:58,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035030983] [2020-11-07 06:41:58,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-07 06:41:58,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:41:58,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-07 06:41:58,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=571, Unknown=0, NotChecked=0, Total=930 [2020-11-07 06:41:58,905 INFO L87 Difference]: Start difference. First operand 433 states and 436 transitions. Second operand 31 states. [2020-11-07 06:42:02,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:42:02,188 INFO L93 Difference]: Finished difference Result 452 states and 455 transitions. [2020-11-07 06:42:02,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-11-07 06:42:02,190 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 427 [2020-11-07 06:42:02,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:42:02,192 INFO L225 Difference]: With dead ends: 452 [2020-11-07 06:42:02,193 INFO L226 Difference]: Without dead ends: 448 [2020-11-07 06:42:02,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1078, Invalid=2462, Unknown=0, NotChecked=0, Total=3540 [2020-11-07 06:42:02,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-11-07 06:42:02,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 443. [2020-11-07 06:42:02,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-11-07 06:42:02,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 446 transitions. [2020-11-07 06:42:02,274 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 446 transitions. Word has length 427 [2020-11-07 06:42:02,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:42:02,275 INFO L481 AbstractCegarLoop]: Abstraction has 443 states and 446 transitions. [2020-11-07 06:42:02,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-11-07 06:42:02,275 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 446 transitions. [2020-11-07 06:42:02,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2020-11-07 06:42:02,277 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:42:02,278 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:42:02,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-11-07 06:42:02,278 INFO L429 AbstractCegarLoop]: === Iteration 52 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:42:02,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:42:02,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1515696188, now seen corresponding path program 49 times [2020-11-07 06:42:02,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:42:02,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371535390] [2020-11-07 06:42:02,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:42:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:04,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:42:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:04,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-11-07 06:42:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:04,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-11-07 06:42:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:04,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-11-07 06:42:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:04,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-11-07 06:42:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:04,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:42:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:04,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-11-07 06:42:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:04,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-07 06:42:04,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:04,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-11-07 06:42:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:04,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-11-07 06:42:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:04,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-11-07 06:42:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:04,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-11-07 06:42:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:04,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-11-07 06:42:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:04,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-11-07 06:42:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:04,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-11-07 06:42:04,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:04,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-11-07 06:42:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:04,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-11-07 06:42:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:04,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-11-07 06:42:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:04,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-11-07 06:42:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:04,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-11-07 06:42:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:04,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-11-07 06:42:04,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:04,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2020-11-07 06:42:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:04,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-11-07 06:42:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:04,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-11-07 06:42:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:04,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2020-11-07 06:42:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:04,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-11-07 06:42:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:04,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 1780 proven. 1970 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-11-07 06:42:04,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371535390] [2020-11-07 06:42:04,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:42:04,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-11-07 06:42:04,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952076037] [2020-11-07 06:42:04,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-11-07 06:42:04,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:42:04,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-11-07 06:42:04,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=735, Invalid=2345, Unknown=0, NotChecked=0, Total=3080 [2020-11-07 06:42:04,901 INFO L87 Difference]: Start difference. First operand 443 states and 446 transitions. Second operand 56 states. [2020-11-07 06:42:15,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:42:15,581 INFO L93 Difference]: Finished difference Result 827 states and 908 transitions. [2020-11-07 06:42:15,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-11-07 06:42:15,582 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 437 [2020-11-07 06:42:15,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:42:15,587 INFO L225 Difference]: With dead ends: 827 [2020-11-07 06:42:15,587 INFO L226 Difference]: Without dead ends: 660 [2020-11-07 06:42:15,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3743 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=4729, Invalid=12827, Unknown=0, NotChecked=0, Total=17556 [2020-11-07 06:42:15,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2020-11-07 06:42:15,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 449. [2020-11-07 06:42:15,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-11-07 06:42:15,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 452 transitions. [2020-11-07 06:42:15,745 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 452 transitions. Word has length 437 [2020-11-07 06:42:15,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:42:15,745 INFO L481 AbstractCegarLoop]: Abstraction has 449 states and 452 transitions. [2020-11-07 06:42:15,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-11-07 06:42:15,745 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 452 transitions. [2020-11-07 06:42:15,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2020-11-07 06:42:15,748 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:42:15,748 INFO L422 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 26, 26, 26, 26, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:42:15,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-11-07 06:42:15,748 INFO L429 AbstractCegarLoop]: === Iteration 53 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:42:15,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:42:15,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1466359100, now seen corresponding path program 50 times [2020-11-07 06:42:15,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:42:15,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469766990] [2020-11-07 06:42:15,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:42:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:16,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:42:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:16,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-11-07 06:42:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:16,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-11-07 06:42:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:16,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-11-07 06:42:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:16,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-11-07 06:42:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:16,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-11-07 06:42:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:16,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-11-07 06:42:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:16,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-11-07 06:42:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:16,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:42:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:16,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-11-07 06:42:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:16,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-11-07 06:42:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:16,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-11-07 06:42:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:16,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-11-07 06:42:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:16,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-11-07 06:42:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:16,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-11-07 06:42:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:16,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-11-07 06:42:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:16,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-11-07 06:42:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:16,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-11-07 06:42:16,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:16,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-11-07 06:42:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:16,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-11-07 06:42:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:16,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-11-07 06:42:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:16,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2020-11-07 06:42:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:16,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2020-11-07 06:42:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:16,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2020-11-07 06:42:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:16,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-11-07 06:42:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:16,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2020-11-07 06:42:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:17,061 INFO L134 CoverageAnalysis]: Checked inductivity of 5102 backedges. 1900 proven. 2002 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-11-07 06:42:17,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469766990] [2020-11-07 06:42:17,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:42:17,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-11-07 06:42:17,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756968269] [2020-11-07 06:42:17,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-11-07 06:42:17,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:42:17,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-11-07 06:42:17,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=606, Unknown=0, NotChecked=0, Total=992 [2020-11-07 06:42:17,063 INFO L87 Difference]: Start difference. First operand 449 states and 452 transitions. Second operand 32 states. [2020-11-07 06:42:21,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:42:21,055 INFO L93 Difference]: Finished difference Result 468 states and 471 transitions. [2020-11-07 06:42:21,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-07 06:42:21,057 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 443 [2020-11-07 06:42:21,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:42:21,060 INFO L225 Difference]: With dead ends: 468 [2020-11-07 06:42:21,060 INFO L226 Difference]: Without dead ends: 464 [2020-11-07 06:42:21,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1159, Invalid=2623, Unknown=0, NotChecked=0, Total=3782 [2020-11-07 06:42:21,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-11-07 06:42:21,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 459. [2020-11-07 06:42:21,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-11-07 06:42:21,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 462 transitions. [2020-11-07 06:42:21,154 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 462 transitions. Word has length 443 [2020-11-07 06:42:21,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:42:21,155 INFO L481 AbstractCegarLoop]: Abstraction has 459 states and 462 transitions. [2020-11-07 06:42:21,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-11-07 06:42:21,155 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 462 transitions. [2020-11-07 06:42:21,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2020-11-07 06:42:21,158 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:42:21,158 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:42:21,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-11-07 06:42:21,158 INFO L429 AbstractCegarLoop]: === Iteration 54 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:42:21,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:42:21,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1124333231, now seen corresponding path program 51 times [2020-11-07 06:42:21,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:42:21,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144808811] [2020-11-07 06:42:21,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:42:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:23,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:42:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:23,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-11-07 06:42:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:23,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-11-07 06:42:23,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:23,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-11-07 06:42:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:23,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-11-07 06:42:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:23,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-11-07 06:42:23,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:23,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-11-07 06:42:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:23,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-11-07 06:42:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:23,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:42:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:23,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-11-07 06:42:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:23,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-11-07 06:42:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:23,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-11-07 06:42:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:23,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-11-07 06:42:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:23,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-11-07 06:42:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:23,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-11-07 06:42:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:23,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-11-07 06:42:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:23,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-11-07 06:42:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:23,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-11-07 06:42:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:23,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-11-07 06:42:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:23,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-11-07 06:42:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:23,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-11-07 06:42:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:23,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2020-11-07 06:42:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:23,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2020-11-07 06:42:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:23,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2020-11-07 06:42:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:23,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-11-07 06:42:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:23,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2020-11-07 06:42:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:23,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-11-07 06:42:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:24,099 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 1929 proven. 2127 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2020-11-07 06:42:24,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144808811] [2020-11-07 06:42:24,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:42:24,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-11-07 06:42:24,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015449372] [2020-11-07 06:42:24,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-11-07 06:42:24,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:42:24,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-11-07 06:42:24,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=790, Invalid=2516, Unknown=0, NotChecked=0, Total=3306 [2020-11-07 06:42:24,101 INFO L87 Difference]: Start difference. First operand 459 states and 462 transitions. Second operand 58 states. [2020-11-07 06:42:35,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:42:35,474 INFO L93 Difference]: Finished difference Result 857 states and 941 transitions. [2020-11-07 06:42:35,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2020-11-07 06:42:35,476 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 453 [2020-11-07 06:42:35,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:42:35,480 INFO L225 Difference]: With dead ends: 857 [2020-11-07 06:42:35,480 INFO L226 Difference]: Without dead ends: 684 [2020-11-07 06:42:35,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4036 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=5099, Invalid=13807, Unknown=0, NotChecked=0, Total=18906 [2020-11-07 06:42:35,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2020-11-07 06:42:35,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 465. [2020-11-07 06:42:35,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-11-07 06:42:35,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 468 transitions. [2020-11-07 06:42:35,576 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 468 transitions. Word has length 453 [2020-11-07 06:42:35,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:42:35,577 INFO L481 AbstractCegarLoop]: Abstraction has 465 states and 468 transitions. [2020-11-07 06:42:35,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-11-07 06:42:35,577 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 468 transitions. [2020-11-07 06:42:35,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2020-11-07 06:42:35,579 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:42:35,579 INFO L422 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 27, 27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:42:35,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-11-07 06:42:35,579 INFO L429 AbstractCegarLoop]: === Iteration 55 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:42:35,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:42:35,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1851742519, now seen corresponding path program 52 times [2020-11-07 06:42:35,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:42:35,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219467803] [2020-11-07 06:42:35,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:42:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:36,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:42:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:36,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-11-07 06:42:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:36,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:42:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:36,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-11-07 06:42:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:36,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-11-07 06:42:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:36,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-11-07 06:42:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:36,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-11-07 06:42:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:36,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-11-07 06:42:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:36,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-11-07 06:42:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:36,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-11-07 06:42:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:36,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-11-07 06:42:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:36,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:42:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:36,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-11-07 06:42:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:36,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-11-07 06:42:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:36,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-11-07 06:42:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:36,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-11-07 06:42:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:36,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-11-07 06:42:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:36,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-11-07 06:42:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:36,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-11-07 06:42:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:36,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-11-07 06:42:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:36,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-11-07 06:42:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:36,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-11-07 06:42:36,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:36,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-11-07 06:42:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:36,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2020-11-07 06:42:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:36,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2020-11-07 06:42:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:36,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-11-07 06:42:36,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:36,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-11-07 06:42:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:36,893 INFO L134 CoverageAnalysis]: Checked inductivity of 5514 backedges. 2054 proven. 2160 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2020-11-07 06:42:36,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219467803] [2020-11-07 06:42:36,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:42:36,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-11-07 06:42:36,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120871920] [2020-11-07 06:42:36,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-07 06:42:36,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:42:36,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-07 06:42:36,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=642, Unknown=0, NotChecked=0, Total=1056 [2020-11-07 06:42:36,895 INFO L87 Difference]: Start difference. First operand 465 states and 468 transitions. Second operand 33 states. [2020-11-07 06:42:41,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:42:41,025 INFO L93 Difference]: Finished difference Result 484 states and 487 transitions. [2020-11-07 06:42:41,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-11-07 06:42:41,026 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 459 [2020-11-07 06:42:41,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:42:41,030 INFO L225 Difference]: With dead ends: 484 [2020-11-07 06:42:41,030 INFO L226 Difference]: Without dead ends: 480 [2020-11-07 06:42:41,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1243, Invalid=2789, Unknown=0, NotChecked=0, Total=4032 [2020-11-07 06:42:41,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-11-07 06:42:41,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 475. [2020-11-07 06:42:41,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-11-07 06:42:41,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 478 transitions. [2020-11-07 06:42:41,123 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 478 transitions. Word has length 459 [2020-11-07 06:42:41,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:42:41,124 INFO L481 AbstractCegarLoop]: Abstraction has 475 states and 478 transitions. [2020-11-07 06:42:41,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-11-07 06:42:41,124 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 478 transitions. [2020-11-07 06:42:41,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2020-11-07 06:42:41,126 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:42:41,126 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:42:41,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-11-07 06:42:41,126 INFO L429 AbstractCegarLoop]: === Iteration 56 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:42:41,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:42:41,127 INFO L82 PathProgramCache]: Analyzing trace with hash 700119394, now seen corresponding path program 53 times [2020-11-07 06:42:41,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:42:41,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331980538] [2020-11-07 06:42:41,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:42:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:43,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:42:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:43,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-11-07 06:42:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:43,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-11-07 06:42:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:43,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2020-11-07 06:42:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:43,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-11-07 06:42:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:43,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-11-07 06:42:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:43,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-11-07 06:42:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:43,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-11-07 06:42:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:43,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-11-07 06:42:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:43,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-11-07 06:42:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:43,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-11-07 06:42:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:43,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:42:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:43,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-11-07 06:42:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:44,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-11-07 06:42:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:44,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-11-07 06:42:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:44,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-11-07 06:42:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:44,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-11-07 06:42:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:44,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-11-07 06:42:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:44,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-11-07 06:42:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:44,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-11-07 06:42:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:44,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-11-07 06:42:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:44,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-11-07 06:42:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:44,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-11-07 06:42:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:44,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2020-11-07 06:42:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:44,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2020-11-07 06:42:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:44,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-11-07 06:42:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:44,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-11-07 06:42:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:44,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-11-07 06:42:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:44,238 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 2084 proven. 2290 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-11-07 06:42:44,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331980538] [2020-11-07 06:42:44,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:42:44,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2020-11-07 06:42:44,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298585984] [2020-11-07 06:42:44,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-11-07 06:42:44,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:42:44,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-11-07 06:42:44,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=847, Invalid=2693, Unknown=0, NotChecked=0, Total=3540 [2020-11-07 06:42:44,241 INFO L87 Difference]: Start difference. First operand 475 states and 478 transitions. Second operand 60 states. [2020-11-07 06:42:56,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:42:56,839 INFO L93 Difference]: Finished difference Result 887 states and 974 transitions. [2020-11-07 06:42:56,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-11-07 06:42:56,840 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 469 [2020-11-07 06:42:56,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:42:56,845 INFO L225 Difference]: With dead ends: 887 [2020-11-07 06:42:56,845 INFO L226 Difference]: Without dead ends: 708 [2020-11-07 06:42:56,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4340 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=5483, Invalid=14823, Unknown=0, NotChecked=0, Total=20306 [2020-11-07 06:42:56,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-11-07 06:42:56,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 481. [2020-11-07 06:42:56,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2020-11-07 06:42:56,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 484 transitions. [2020-11-07 06:42:56,952 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 484 transitions. Word has length 469 [2020-11-07 06:42:56,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:42:56,952 INFO L481 AbstractCegarLoop]: Abstraction has 481 states and 484 transitions. [2020-11-07 06:42:56,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-11-07 06:42:56,952 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 484 transitions. [2020-11-07 06:42:56,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-11-07 06:42:56,955 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:42:56,955 INFO L422 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 28, 28, 28, 28, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:42:56,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-11-07 06:42:56,956 INFO L429 AbstractCegarLoop]: === Iteration 57 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:42:56,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:42:56,956 INFO L82 PathProgramCache]: Analyzing trace with hash 542133226, now seen corresponding path program 54 times [2020-11-07 06:42:56,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:42:56,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137627372] [2020-11-07 06:42:56,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:42:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:42:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-11-07 06:42:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-11-07 06:42:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-11-07 06:42:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-11-07 06:42:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:42:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-11-07 06:42:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-11-07 06:42:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-11-07 06:42:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-11-07 06:42:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-11-07 06:42:58,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-11-07 06:42:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-11-07 06:42:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-11-07 06:42:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-11-07 06:42:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-11-07 06:42:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-11-07 06:42:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2020-11-07 06:42:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-11-07 06:42:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2020-11-07 06:42:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-11-07 06:42:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2020-11-07 06:42:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-11-07 06:42:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-11-07 06:42:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-11-07 06:42:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-11-07 06:42:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2020-11-07 06:42:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-11-07 06:42:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:42:58,701 INFO L134 CoverageAnalysis]: Checked inductivity of 5942 backedges. 2214 proven. 2324 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2020-11-07 06:42:58,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137627372] [2020-11-07 06:42:58,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:42:58,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-11-07 06:42:58,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622055563] [2020-11-07 06:42:58,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-11-07 06:42:58,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:42:58,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-11-07 06:42:58,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=443, Invalid=679, Unknown=0, NotChecked=0, Total=1122 [2020-11-07 06:42:58,704 INFO L87 Difference]: Start difference. First operand 481 states and 484 transitions. Second operand 34 states. [2020-11-07 06:43:03,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:43:03,624 INFO L93 Difference]: Finished difference Result 500 states and 503 transitions. [2020-11-07 06:43:03,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-07 06:43:03,630 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 475 [2020-11-07 06:43:03,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:43:03,633 INFO L225 Difference]: With dead ends: 500 [2020-11-07 06:43:03,633 INFO L226 Difference]: Without dead ends: 496 [2020-11-07 06:43:03,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1330, Invalid=2960, Unknown=0, NotChecked=0, Total=4290 [2020-11-07 06:43:03,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-11-07 06:43:03,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 491. [2020-11-07 06:43:03,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-11-07 06:43:03,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 494 transitions. [2020-11-07 06:43:03,748 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 494 transitions. Word has length 475 [2020-11-07 06:43:03,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:43:03,748 INFO L481 AbstractCegarLoop]: Abstraction has 491 states and 494 transitions. [2020-11-07 06:43:03,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-11-07 06:43:03,749 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 494 transitions. [2020-11-07 06:43:03,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2020-11-07 06:43:03,751 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:43:03,751 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:43:03,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-11-07 06:43:03,751 INFO L429 AbstractCegarLoop]: === Iteration 58 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:43:03,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:43:03,752 INFO L82 PathProgramCache]: Analyzing trace with hash 2089707605, now seen corresponding path program 55 times [2020-11-07 06:43:03,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:43:03,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358927496] [2020-11-07 06:43:03,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:43:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:43:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-11-07 06:43:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-11-07 06:43:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-11-07 06:43:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-11-07 06:43:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:43:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-11-07 06:43:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-11-07 06:43:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-11-07 06:43:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-11-07 06:43:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-11-07 06:43:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-11-07 06:43:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-11-07 06:43:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-11-07 06:43:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-11-07 06:43:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-11-07 06:43:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-11-07 06:43:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2020-11-07 06:43:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-11-07 06:43:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2020-11-07 06:43:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-11-07 06:43:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2020-11-07 06:43:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-11-07 06:43:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-11-07 06:43:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-11-07 06:43:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-11-07 06:43:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2020-11-07 06:43:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-11-07 06:43:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2020-11-07 06:43:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:07,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 2245 proven. 2459 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2020-11-07 06:43:07,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358927496] [2020-11-07 06:43:07,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:43:07,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2020-11-07 06:43:07,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993680045] [2020-11-07 06:43:07,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-11-07 06:43:07,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:43:07,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-11-07 06:43:07,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=906, Invalid=2876, Unknown=0, NotChecked=0, Total=3782 [2020-11-07 06:43:07,611 INFO L87 Difference]: Start difference. First operand 491 states and 494 transitions. Second operand 62 states. [2020-11-07 06:43:21,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:43:21,978 INFO L93 Difference]: Finished difference Result 917 states and 1007 transitions. [2020-11-07 06:43:21,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-11-07 06:43:21,980 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 485 [2020-11-07 06:43:21,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:43:21,984 INFO L225 Difference]: With dead ends: 917 [2020-11-07 06:43:21,984 INFO L226 Difference]: Without dead ends: 732 [2020-11-07 06:43:21,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4655 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=5881, Invalid=15875, Unknown=0, NotChecked=0, Total=21756 [2020-11-07 06:43:21,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2020-11-07 06:43:22,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 497. [2020-11-07 06:43:22,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2020-11-07 06:43:22,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 500 transitions. [2020-11-07 06:43:22,093 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 500 transitions. Word has length 485 [2020-11-07 06:43:22,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:43:22,094 INFO L481 AbstractCegarLoop]: Abstraction has 497 states and 500 transitions. [2020-11-07 06:43:22,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-11-07 06:43:22,094 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 500 transitions. [2020-11-07 06:43:22,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2020-11-07 06:43:22,097 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:43:22,098 INFO L422 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 29, 29, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:43:22,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-11-07 06:43:22,098 INFO L429 AbstractCegarLoop]: === Iteration 59 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:43:22,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:43:22,099 INFO L82 PathProgramCache]: Analyzing trace with hash -327308579, now seen corresponding path program 56 times [2020-11-07 06:43:22,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:43:22,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381174376] [2020-11-07 06:43:22,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:43:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:43:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-11-07 06:43:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-11-07 06:43:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-11-07 06:43:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-11-07 06:43:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-11-07 06:43:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-11-07 06:43:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-11-07 06:43:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:43:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-11-07 06:43:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-11-07 06:43:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-11-07 06:43:23,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-11-07 06:43:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-11-07 06:43:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-11-07 06:43:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-11-07 06:43:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-11-07 06:43:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-11-07 06:43:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-11-07 06:43:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-11-07 06:43:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2020-11-07 06:43:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-11-07 06:43:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-11-07 06:43:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-11-07 06:43:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2020-11-07 06:43:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-11-07 06:43:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2020-11-07 06:43:23,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2020-11-07 06:43:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-11-07 06:43:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:23,967 INFO L134 CoverageAnalysis]: Checked inductivity of 6386 backedges. 2380 proven. 2494 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2020-11-07 06:43:23,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381174376] [2020-11-07 06:43:23,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:43:23,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-11-07 06:43:23,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523092714] [2020-11-07 06:43:23,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-07 06:43:23,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:43:23,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-07 06:43:23,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=473, Invalid=717, Unknown=0, NotChecked=0, Total=1190 [2020-11-07 06:43:23,970 INFO L87 Difference]: Start difference. First operand 497 states and 500 transitions. Second operand 35 states. [2020-11-07 06:43:28,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:43:28,596 INFO L93 Difference]: Finished difference Result 516 states and 519 transitions. [2020-11-07 06:43:28,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-11-07 06:43:28,597 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 491 [2020-11-07 06:43:28,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:43:28,614 INFO L225 Difference]: With dead ends: 516 [2020-11-07 06:43:28,614 INFO L226 Difference]: Without dead ends: 512 [2020-11-07 06:43:28,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1420, Invalid=3136, Unknown=0, NotChecked=0, Total=4556 [2020-11-07 06:43:28,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2020-11-07 06:43:28,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 507. [2020-11-07 06:43:28,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-11-07 06:43:28,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 510 transitions. [2020-11-07 06:43:28,720 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 510 transitions. Word has length 491 [2020-11-07 06:43:28,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:43:28,721 INFO L481 AbstractCegarLoop]: Abstraction has 507 states and 510 transitions. [2020-11-07 06:43:28,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-11-07 06:43:28,721 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 510 transitions. [2020-11-07 06:43:28,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2020-11-07 06:43:28,723 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:43:28,723 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:43:28,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-11-07 06:43:28,724 INFO L429 AbstractCegarLoop]: === Iteration 60 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:43:28,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:43:28,724 INFO L82 PathProgramCache]: Analyzing trace with hash 53736328, now seen corresponding path program 57 times [2020-11-07 06:43:28,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:43:28,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660429920] [2020-11-07 06:43:28,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:43:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:43:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-11-07 06:43:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-11-07 06:43:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-11-07 06:43:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-11-07 06:43:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-11-07 06:43:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-11-07 06:43:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-11-07 06:43:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:43:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-11-07 06:43:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-11-07 06:43:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-11-07 06:43:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-11-07 06:43:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-11-07 06:43:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-11-07 06:43:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-11-07 06:43:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-11-07 06:43:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-11-07 06:43:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-11-07 06:43:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-11-07 06:43:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2020-11-07 06:43:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-11-07 06:43:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-11-07 06:43:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-11-07 06:43:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2020-11-07 06:43:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-11-07 06:43:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2020-11-07 06:43:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2020-11-07 06:43:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-11-07 06:43:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2020-11-07 06:43:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:32,623 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 2412 proven. 2634 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-11-07 06:43:32,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660429920] [2020-11-07 06:43:32,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:43:32,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2020-11-07 06:43:32,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770790247] [2020-11-07 06:43:32,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-11-07 06:43:32,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:43:32,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-11-07 06:43:32,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=967, Invalid=3065, Unknown=0, NotChecked=0, Total=4032 [2020-11-07 06:43:32,626 INFO L87 Difference]: Start difference. First operand 507 states and 510 transitions. Second operand 64 states. [2020-11-07 06:43:48,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:43:48,073 INFO L93 Difference]: Finished difference Result 947 states and 1040 transitions. [2020-11-07 06:43:48,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2020-11-07 06:43:48,074 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 501 [2020-11-07 06:43:48,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:43:48,079 INFO L225 Difference]: With dead ends: 947 [2020-11-07 06:43:48,079 INFO L226 Difference]: Without dead ends: 756 [2020-11-07 06:43:48,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4981 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=6293, Invalid=16963, Unknown=0, NotChecked=0, Total=23256 [2020-11-07 06:43:48,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2020-11-07 06:43:48,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 513. [2020-11-07 06:43:48,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-11-07 06:43:48,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 516 transitions. [2020-11-07 06:43:48,204 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 516 transitions. Word has length 501 [2020-11-07 06:43:48,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:43:48,204 INFO L481 AbstractCegarLoop]: Abstraction has 513 states and 516 transitions. [2020-11-07 06:43:48,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-11-07 06:43:48,204 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 516 transitions. [2020-11-07 06:43:48,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2020-11-07 06:43:48,207 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:43:48,207 INFO L422 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 30, 30, 30, 30, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:43:48,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-11-07 06:43:48,208 INFO L429 AbstractCegarLoop]: === Iteration 61 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:43:48,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:43:48,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1520248336, now seen corresponding path program 58 times [2020-11-07 06:43:48,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:43:48,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814548864] [2020-11-07 06:43:48,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:43:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:43:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-11-07 06:43:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:43:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-11-07 06:43:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-07 06:43:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-11-07 06:43:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-11-07 06:43:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-11-07 06:43:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-11-07 06:43:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-11-07 06:43:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-11-07 06:43:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-11-07 06:43:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-11-07 06:43:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-11-07 06:43:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-11-07 06:43:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-11-07 06:43:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-11-07 06:43:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-11-07 06:43:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2020-11-07 06:43:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-11-07 06:43:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-11-07 06:43:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2020-11-07 06:43:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-11-07 06:43:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2020-11-07 06:43:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-11-07 06:43:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2020-11-07 06:43:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2020-11-07 06:43:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2020-11-07 06:43:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-11-07 06:43:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-11-07 06:43:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:50,276 INFO L134 CoverageAnalysis]: Checked inductivity of 6846 backedges. 2552 proven. 2670 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2020-11-07 06:43:50,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814548864] [2020-11-07 06:43:50,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:43:50,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-11-07 06:43:50,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232583648] [2020-11-07 06:43:50,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-11-07 06:43:50,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:43:50,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-11-07 06:43:50,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=756, Unknown=0, NotChecked=0, Total=1260 [2020-11-07 06:43:50,278 INFO L87 Difference]: Start difference. First operand 513 states and 516 transitions. Second operand 36 states. [2020-11-07 06:43:55,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:43:55,449 INFO L93 Difference]: Finished difference Result 532 states and 535 transitions. [2020-11-07 06:43:55,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-07 06:43:55,451 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 507 [2020-11-07 06:43:55,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:43:55,454 INFO L225 Difference]: With dead ends: 532 [2020-11-07 06:43:55,454 INFO L226 Difference]: Without dead ends: 528 [2020-11-07 06:43:55,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1513, Invalid=3317, Unknown=0, NotChecked=0, Total=4830 [2020-11-07 06:43:55,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2020-11-07 06:43:55,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 523. [2020-11-07 06:43:55,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 523 states. [2020-11-07 06:43:55,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 526 transitions. [2020-11-07 06:43:55,574 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 526 transitions. Word has length 507 [2020-11-07 06:43:55,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:43:55,575 INFO L481 AbstractCegarLoop]: Abstraction has 523 states and 526 transitions. [2020-11-07 06:43:55,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-11-07 06:43:55,575 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 526 transitions. [2020-11-07 06:43:55,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2020-11-07 06:43:55,577 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:43:55,578 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:43:55,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-11-07 06:43:55,578 INFO L429 AbstractCegarLoop]: === Iteration 62 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:43:55,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:43:55,579 INFO L82 PathProgramCache]: Analyzing trace with hash 570772219, now seen corresponding path program 59 times [2020-11-07 06:43:55,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:43:55,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757319804] [2020-11-07 06:43:55,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:43:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:43:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-11-07 06:43:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-11-07 06:43:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-11-07 06:43:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-07 06:43:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-11-07 06:43:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-11-07 06:43:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-11-07 06:43:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-11-07 06:43:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-11-07 06:43:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-11-07 06:43:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-11-07 06:43:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-11-07 06:43:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-11-07 06:43:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-11-07 06:43:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-11-07 06:43:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-11-07 06:43:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-11-07 06:43:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2020-11-07 06:43:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-11-07 06:43:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-11-07 06:43:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2020-11-07 06:43:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-11-07 06:43:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2020-11-07 06:43:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-11-07 06:43:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2020-11-07 06:43:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2020-11-07 06:43:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2020-11-07 06:43:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-11-07 06:43:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-11-07 06:43:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:43:59,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2020-11-07 06:43:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:00,178 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 2585 proven. 2815 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2020-11-07 06:44:00,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757319804] [2020-11-07 06:44:00,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:44:00,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2020-11-07 06:44:00,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638399110] [2020-11-07 06:44:00,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-11-07 06:44:00,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:44:00,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-11-07 06:44:00,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1030, Invalid=3260, Unknown=0, NotChecked=0, Total=4290 [2020-11-07 06:44:00,180 INFO L87 Difference]: Start difference. First operand 523 states and 526 transitions. Second operand 66 states. [2020-11-07 06:44:17,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:44:17,386 INFO L93 Difference]: Finished difference Result 977 states and 1073 transitions. [2020-11-07 06:44:17,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2020-11-07 06:44:17,388 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 517 [2020-11-07 06:44:17,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:44:17,392 INFO L225 Difference]: With dead ends: 977 [2020-11-07 06:44:17,393 INFO L226 Difference]: Without dead ends: 780 [2020-11-07 06:44:17,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5318 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=6719, Invalid=18087, Unknown=0, NotChecked=0, Total=24806 [2020-11-07 06:44:17,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2020-11-07 06:44:17,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 529. [2020-11-07 06:44:17,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 529 states. [2020-11-07 06:44:17,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 532 transitions. [2020-11-07 06:44:17,515 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 532 transitions. Word has length 517 [2020-11-07 06:44:17,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:44:17,515 INFO L481 AbstractCegarLoop]: Abstraction has 529 states and 532 transitions. [2020-11-07 06:44:17,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-11-07 06:44:17,515 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 532 transitions. [2020-11-07 06:44:17,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2020-11-07 06:44:17,518 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:44:17,518 INFO L422 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 31, 31, 31, 31, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:44:17,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-11-07 06:44:17,519 INFO L429 AbstractCegarLoop]: === Iteration 63 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:44:17,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:44:17,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1895273085, now seen corresponding path program 60 times [2020-11-07 06:44:17,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:44:17,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934908075] [2020-11-07 06:44:17,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:44:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:44:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-11-07 06:44:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-11-07 06:44:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-11-07 06:44:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-11-07 06:44:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:44:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-11-07 06:44:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-11-07 06:44:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-11-07 06:44:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-11-07 06:44:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-11-07 06:44:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-11-07 06:44:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-11-07 06:44:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-11-07 06:44:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-11-07 06:44:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-11-07 06:44:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-11-07 06:44:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-11-07 06:44:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2020-11-07 06:44:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2020-11-07 06:44:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2020-11-07 06:44:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-11-07 06:44:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2020-11-07 06:44:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-11-07 06:44:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-11-07 06:44:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-11-07 06:44:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-11-07 06:44:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2020-11-07 06:44:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-11-07 06:44:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2020-11-07 06:44:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2020-11-07 06:44:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:19,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7322 backedges. 2730 proven. 2852 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2020-11-07 06:44:19,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934908075] [2020-11-07 06:44:19,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:44:19,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-11-07 06:44:19,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961993501] [2020-11-07 06:44:19,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-07 06:44:19,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:44:19,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-07 06:44:19,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=536, Invalid=796, Unknown=0, NotChecked=0, Total=1332 [2020-11-07 06:44:19,492 INFO L87 Difference]: Start difference. First operand 529 states and 532 transitions. Second operand 37 states. [2020-11-07 06:44:24,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:44:24,857 INFO L93 Difference]: Finished difference Result 548 states and 551 transitions. [2020-11-07 06:44:24,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-07 06:44:24,859 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 523 [2020-11-07 06:44:24,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:44:24,863 INFO L225 Difference]: With dead ends: 548 [2020-11-07 06:44:24,863 INFO L226 Difference]: Without dead ends: 544 [2020-11-07 06:44:24,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1609, Invalid=3503, Unknown=0, NotChecked=0, Total=5112 [2020-11-07 06:44:24,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2020-11-07 06:44:24,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 539. [2020-11-07 06:44:24,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-11-07 06:44:24,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 542 transitions. [2020-11-07 06:44:24,984 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 542 transitions. Word has length 523 [2020-11-07 06:44:24,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:44:24,984 INFO L481 AbstractCegarLoop]: Abstraction has 539 states and 542 transitions. [2020-11-07 06:44:24,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-11-07 06:44:24,984 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 542 transitions. [2020-11-07 06:44:24,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2020-11-07 06:44:24,987 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:44:24,987 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:44:24,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-11-07 06:44:24,988 INFO L429 AbstractCegarLoop]: === Iteration 64 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:44:24,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:44:24,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1560288942, now seen corresponding path program 61 times [2020-11-07 06:44:24,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:44:24,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858842694] [2020-11-07 06:44:24,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:44:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:44:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-11-07 06:44:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-11-07 06:44:29,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-11-07 06:44:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-11-07 06:44:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:44:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-11-07 06:44:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-11-07 06:44:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-11-07 06:44:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-11-07 06:44:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-11-07 06:44:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-11-07 06:44:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-11-07 06:44:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-11-07 06:44:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-11-07 06:44:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-11-07 06:44:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-11-07 06:44:29,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-11-07 06:44:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2020-11-07 06:44:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2020-11-07 06:44:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2020-11-07 06:44:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-11-07 06:44:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2020-11-07 06:44:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-11-07 06:44:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-11-07 06:44:29,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-11-07 06:44:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-11-07 06:44:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2020-11-07 06:44:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-11-07 06:44:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2020-11-07 06:44:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2020-11-07 06:44:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:29,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-11-07 06:44:29,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:30,027 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 2764 proven. 3002 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-11-07 06:44:30,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858842694] [2020-11-07 06:44:30,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:44:30,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2020-11-07 06:44:30,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261597148] [2020-11-07 06:44:30,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-11-07 06:44:30,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:44:30,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-11-07 06:44:30,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1095, Invalid=3461, Unknown=0, NotChecked=0, Total=4556 [2020-11-07 06:44:30,031 INFO L87 Difference]: Start difference. First operand 539 states and 542 transitions. Second operand 68 states. [2020-11-07 06:44:48,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:44:48,448 INFO L93 Difference]: Finished difference Result 1007 states and 1106 transitions. [2020-11-07 06:44:48,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2020-11-07 06:44:48,449 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 533 [2020-11-07 06:44:48,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:44:48,454 INFO L225 Difference]: With dead ends: 1007 [2020-11-07 06:44:48,455 INFO L226 Difference]: Without dead ends: 804 [2020-11-07 06:44:48,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5666 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=7159, Invalid=19247, Unknown=0, NotChecked=0, Total=26406 [2020-11-07 06:44:48,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2020-11-07 06:44:48,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 545. [2020-11-07 06:44:48,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-11-07 06:44:48,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 548 transitions. [2020-11-07 06:44:48,635 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 548 transitions. Word has length 533 [2020-11-07 06:44:48,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:44:48,635 INFO L481 AbstractCegarLoop]: Abstraction has 545 states and 548 transitions. [2020-11-07 06:44:48,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-11-07 06:44:48,635 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 548 transitions. [2020-11-07 06:44:48,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2020-11-07 06:44:48,639 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:44:48,640 INFO L422 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 32, 32, 32, 32, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:44:48,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-11-07 06:44:48,640 INFO L429 AbstractCegarLoop]: === Iteration 65 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:44:48,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:44:48,640 INFO L82 PathProgramCache]: Analyzing trace with hash -843239114, now seen corresponding path program 62 times [2020-11-07 06:44:48,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:44:48,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918938872] [2020-11-07 06:44:48,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:44:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:44:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-11-07 06:44:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-11-07 06:44:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-11-07 06:44:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-11-07 06:44:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-11-07 06:44:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-11-07 06:44:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-11-07 06:44:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:44:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-11-07 06:44:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-11-07 06:44:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-11-07 06:44:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-11-07 06:44:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-11-07 06:44:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-11-07 06:44:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-11-07 06:44:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-11-07 06:44:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-11-07 06:44:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-11-07 06:44:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-11-07 06:44:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2020-11-07 06:44:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2020-11-07 06:44:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-11-07 06:44:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-11-07 06:44:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-11-07 06:44:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2020-11-07 06:44:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2020-11-07 06:44:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2020-11-07 06:44:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-11-07 06:44:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-11-07 06:44:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2020-11-07 06:44:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-11-07 06:44:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:44:50,938 INFO L134 CoverageAnalysis]: Checked inductivity of 7814 backedges. 2914 proven. 3040 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2020-11-07 06:44:50,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918938872] [2020-11-07 06:44:50,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:44:50,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-11-07 06:44:50,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692385768] [2020-11-07 06:44:50,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-11-07 06:44:50,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:44:50,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-11-07 06:44:50,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=569, Invalid=837, Unknown=0, NotChecked=0, Total=1406 [2020-11-07 06:44:50,941 INFO L87 Difference]: Start difference. First operand 545 states and 548 transitions. Second operand 38 states. [2020-11-07 06:44:56,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:44:56,947 INFO L93 Difference]: Finished difference Result 564 states and 567 transitions. [2020-11-07 06:44:56,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-11-07 06:44:56,949 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 539 [2020-11-07 06:44:56,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:44:56,952 INFO L225 Difference]: With dead ends: 564 [2020-11-07 06:44:56,953 INFO L226 Difference]: Without dead ends: 560 [2020-11-07 06:44:56,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1708, Invalid=3694, Unknown=0, NotChecked=0, Total=5402 [2020-11-07 06:44:56,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-11-07 06:44:57,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 555. [2020-11-07 06:44:57,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2020-11-07 06:44:57,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 558 transitions. [2020-11-07 06:44:57,091 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 558 transitions. Word has length 539 [2020-11-07 06:44:57,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:44:57,091 INFO L481 AbstractCegarLoop]: Abstraction has 555 states and 558 transitions. [2020-11-07 06:44:57,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-11-07 06:44:57,091 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 558 transitions. [2020-11-07 06:44:57,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2020-11-07 06:44:57,095 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:44:57,095 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:44:57,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-11-07 06:44:57,095 INFO L429 AbstractCegarLoop]: === Iteration 66 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:44:57,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:44:57,096 INFO L82 PathProgramCache]: Analyzing trace with hash 449191585, now seen corresponding path program 63 times [2020-11-07 06:44:57,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:44:57,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869008315] [2020-11-07 06:44:57,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:44:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:45:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-11-07 06:45:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-11-07 06:45:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-11-07 06:45:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-11-07 06:45:02,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-11-07 06:45:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-11-07 06:45:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-11-07 06:45:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:45:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-11-07 06:45:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-11-07 06:45:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-11-07 06:45:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-11-07 06:45:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-11-07 06:45:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-11-07 06:45:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-11-07 06:45:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-11-07 06:45:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-11-07 06:45:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-11-07 06:45:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-11-07 06:45:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2020-11-07 06:45:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2020-11-07 06:45:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-11-07 06:45:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-11-07 06:45:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-11-07 06:45:02,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2020-11-07 06:45:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2020-11-07 06:45:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2020-11-07 06:45:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-11-07 06:45:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-11-07 06:45:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2020-11-07 06:45:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-11-07 06:45:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:02,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-11-07 06:45:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:03,011 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 2949 proven. 3195 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2020-11-07 06:45:03,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869008315] [2020-11-07 06:45:03,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:45:03,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2020-11-07 06:45:03,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042316374] [2020-11-07 06:45:03,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-11-07 06:45:03,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:45:03,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-11-07 06:45:03,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1162, Invalid=3668, Unknown=0, NotChecked=0, Total=4830 [2020-11-07 06:45:03,015 INFO L87 Difference]: Start difference. First operand 555 states and 558 transitions. Second operand 70 states. [2020-11-07 06:45:23,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:45:23,682 INFO L93 Difference]: Finished difference Result 1037 states and 1139 transitions. [2020-11-07 06:45:23,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2020-11-07 06:45:23,684 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 549 [2020-11-07 06:45:23,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:45:23,689 INFO L225 Difference]: With dead ends: 1037 [2020-11-07 06:45:23,689 INFO L226 Difference]: Without dead ends: 828 [2020-11-07 06:45:23,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6025 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=7613, Invalid=20443, Unknown=0, NotChecked=0, Total=28056 [2020-11-07 06:45:23,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-11-07 06:45:23,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 561. [2020-11-07 06:45:23,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-11-07 06:45:23,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 564 transitions. [2020-11-07 06:45:23,828 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 564 transitions. Word has length 549 [2020-11-07 06:45:23,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:45:23,828 INFO L481 AbstractCegarLoop]: Abstraction has 561 states and 564 transitions. [2020-11-07 06:45:23,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-11-07 06:45:23,828 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 564 transitions. [2020-11-07 06:45:23,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2020-11-07 06:45:23,831 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:45:23,832 INFO L422 BasicCegarLoop]: trace histogram [34, 33, 33, 33, 33, 33, 33, 33, 33, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:45:23,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-11-07 06:45:23,832 INFO L429 AbstractCegarLoop]: === Iteration 67 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:45:23,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:45:23,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1029513513, now seen corresponding path program 64 times [2020-11-07 06:45:23,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:45:23,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774766729] [2020-11-07 06:45:23,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:45:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:45:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-11-07 06:45:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:45:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-11-07 06:45:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-11-07 06:45:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-11-07 06:45:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-11-07 06:45:25,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-11-07 06:45:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-11-07 06:45:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-11-07 06:45:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-11-07 06:45:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-11-07 06:45:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-11-07 06:45:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-11-07 06:45:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2020-11-07 06:45:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-11-07 06:45:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2020-11-07 06:45:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-11-07 06:45:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2020-11-07 06:45:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-11-07 06:45:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-11-07 06:45:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-11-07 06:45:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-11-07 06:45:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2020-11-07 06:45:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-11-07 06:45:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2020-11-07 06:45:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2020-11-07 06:45:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2020-11-07 06:45:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2020-11-07 06:45:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-11-07 06:45:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-11-07 06:45:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2020-11-07 06:45:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:25,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2020-11-07 06:45:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:26,199 INFO L134 CoverageAnalysis]: Checked inductivity of 8322 backedges. 3104 proven. 3234 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2020-11-07 06:45:26,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774766729] [2020-11-07 06:45:26,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:45:26,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-11-07 06:45:26,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874514701] [2020-11-07 06:45:26,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-11-07 06:45:26,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:45:26,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-11-07 06:45:26,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=603, Invalid=879, Unknown=0, NotChecked=0, Total=1482 [2020-11-07 06:45:26,202 INFO L87 Difference]: Start difference. First operand 561 states and 564 transitions. Second operand 39 states. [2020-11-07 06:45:32,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:45:32,907 INFO L93 Difference]: Finished difference Result 580 states and 583 transitions. [2020-11-07 06:45:32,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-11-07 06:45:32,908 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 555 [2020-11-07 06:45:32,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:45:32,913 INFO L225 Difference]: With dead ends: 580 [2020-11-07 06:45:32,913 INFO L226 Difference]: Without dead ends: 576 [2020-11-07 06:45:32,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1810, Invalid=3890, Unknown=0, NotChecked=0, Total=5700 [2020-11-07 06:45:32,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-11-07 06:45:33,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 571. [2020-11-07 06:45:33,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-11-07 06:45:33,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 574 transitions. [2020-11-07 06:45:33,047 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 574 transitions. Word has length 555 [2020-11-07 06:45:33,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:45:33,047 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 574 transitions. [2020-11-07 06:45:33,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-11-07 06:45:33,048 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 574 transitions. [2020-11-07 06:45:33,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2020-11-07 06:45:33,050 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:45:33,051 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:45:33,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-11-07 06:45:33,051 INFO L429 AbstractCegarLoop]: === Iteration 68 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:45:33,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:45:33,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1482884396, now seen corresponding path program 65 times [2020-11-07 06:45:33,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:45:33,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633285114] [2020-11-07 06:45:33,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:45:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:45:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-11-07 06:45:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-11-07 06:45:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-11-07 06:45:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-11-07 06:45:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-11-07 06:45:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-11-07 06:45:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-11-07 06:45:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-11-07 06:45:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-11-07 06:45:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-11-07 06:45:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-11-07 06:45:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-11-07 06:45:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-11-07 06:45:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2020-11-07 06:45:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-11-07 06:45:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2020-11-07 06:45:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-11-07 06:45:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2020-11-07 06:45:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-11-07 06:45:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-11-07 06:45:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-11-07 06:45:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-11-07 06:45:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2020-11-07 06:45:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-11-07 06:45:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2020-11-07 06:45:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2020-11-07 06:45:38,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2020-11-07 06:45:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2020-11-07 06:45:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-11-07 06:45:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-11-07 06:45:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2020-11-07 06:45:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2020-11-07 06:45:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:38,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2020-11-07 06:45:38,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:45:39,074 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 3140 proven. 3394 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-11-07 06:45:39,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633285114] [2020-11-07 06:45:39,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:45:39,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2020-11-07 06:45:39,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517106672] [2020-11-07 06:45:39,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-11-07 06:45:39,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:45:39,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-11-07 06:45:39,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1231, Invalid=3881, Unknown=0, NotChecked=0, Total=5112 [2020-11-07 06:45:39,077 INFO L87 Difference]: Start difference. First operand 571 states and 574 transitions. Second operand 72 states. [2020-11-07 06:46:01,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:46:01,418 INFO L93 Difference]: Finished difference Result 1067 states and 1172 transitions. [2020-11-07 06:46:01,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2020-11-07 06:46:01,420 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 565 [2020-11-07 06:46:01,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:46:01,428 INFO L225 Difference]: With dead ends: 1067 [2020-11-07 06:46:01,429 INFO L226 Difference]: Without dead ends: 852 [2020-11-07 06:46:01,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6395 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=8081, Invalid=21675, Unknown=0, NotChecked=0, Total=29756 [2020-11-07 06:46:01,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2020-11-07 06:46:01,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 577. [2020-11-07 06:46:01,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2020-11-07 06:46:01,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 580 transitions. [2020-11-07 06:46:01,639 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 580 transitions. Word has length 565 [2020-11-07 06:46:01,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:46:01,640 INFO L481 AbstractCegarLoop]: Abstraction has 577 states and 580 transitions. [2020-11-07 06:46:01,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-11-07 06:46:01,640 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 580 transitions. [2020-11-07 06:46:01,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2020-11-07 06:46:01,643 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:46:01,644 INFO L422 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 34, 34, 34, 34, 33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:46:01,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-11-07 06:46:01,644 INFO L429 AbstractCegarLoop]: === Iteration 69 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:46:01,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:46:01,644 INFO L82 PathProgramCache]: Analyzing trace with hash -366088868, now seen corresponding path program 66 times [2020-11-07 06:46:01,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:46:01,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756139385] [2020-11-07 06:46:01,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:46:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:46:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-11-07 06:46:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-11-07 06:46:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-11-07 06:46:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-11-07 06:46:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:46:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-11-07 06:46:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-11-07 06:46:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-11-07 06:46:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-11-07 06:46:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-11-07 06:46:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-11-07 06:46:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-11-07 06:46:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-11-07 06:46:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-11-07 06:46:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-11-07 06:46:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-11-07 06:46:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2020-11-07 06:46:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-11-07 06:46:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-11-07 06:46:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-11-07 06:46:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2020-11-07 06:46:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-11-07 06:46:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2020-11-07 06:46:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2020-11-07 06:46:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-11-07 06:46:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2020-11-07 06:46:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-11-07 06:46:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2020-11-07 06:46:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2020-11-07 06:46:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2020-11-07 06:46:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-11-07 06:46:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2020-11-07 06:46:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2020-11-07 06:46:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:04,454 INFO L134 CoverageAnalysis]: Checked inductivity of 8846 backedges. 3300 proven. 3434 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2020-11-07 06:46:04,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756139385] [2020-11-07 06:46:04,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:46:04,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-11-07 06:46:04,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993440742] [2020-11-07 06:46:04,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-11-07 06:46:04,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:46:04,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-11-07 06:46:04,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=638, Invalid=922, Unknown=0, NotChecked=0, Total=1560 [2020-11-07 06:46:04,457 INFO L87 Difference]: Start difference. First operand 577 states and 580 transitions. Second operand 40 states. [2020-11-07 06:46:11,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:46:11,743 INFO L93 Difference]: Finished difference Result 596 states and 599 transitions. [2020-11-07 06:46:11,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-07 06:46:11,745 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 571 [2020-11-07 06:46:11,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:46:11,750 INFO L225 Difference]: With dead ends: 596 [2020-11-07 06:46:11,750 INFO L226 Difference]: Without dead ends: 592 [2020-11-07 06:46:11,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 900 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1915, Invalid=4091, Unknown=0, NotChecked=0, Total=6006 [2020-11-07 06:46:11,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2020-11-07 06:46:11,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 587. [2020-11-07 06:46:11,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 587 states. [2020-11-07 06:46:11,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 590 transitions. [2020-11-07 06:46:11,956 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 590 transitions. Word has length 571 [2020-11-07 06:46:11,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:46:11,956 INFO L481 AbstractCegarLoop]: Abstraction has 587 states and 590 transitions. [2020-11-07 06:46:11,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-11-07 06:46:11,957 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 590 transitions. [2020-11-07 06:46:11,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2020-11-07 06:46:11,960 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:46:11,960 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:46:11,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-11-07 06:46:11,961 INFO L429 AbstractCegarLoop]: === Iteration 70 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:46:11,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:46:11,961 INFO L82 PathProgramCache]: Analyzing trace with hash 2020500295, now seen corresponding path program 67 times [2020-11-07 06:46:11,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:46:11,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893991880] [2020-11-07 06:46:11,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:46:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:46:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-11-07 06:46:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-11-07 06:46:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-11-07 06:46:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-11-07 06:46:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:46:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-11-07 06:46:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-11-07 06:46:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-11-07 06:46:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-11-07 06:46:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-11-07 06:46:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-11-07 06:46:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-11-07 06:46:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-11-07 06:46:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-11-07 06:46:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-11-07 06:46:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-11-07 06:46:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2020-11-07 06:46:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-11-07 06:46:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-11-07 06:46:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-11-07 06:46:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2020-11-07 06:46:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-11-07 06:46:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2020-11-07 06:46:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2020-11-07 06:46:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-11-07 06:46:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2020-11-07 06:46:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-11-07 06:46:18,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2020-11-07 06:46:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2020-11-07 06:46:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2020-11-07 06:46:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-11-07 06:46:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2020-11-07 06:46:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2020-11-07 06:46:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2020-11-07 06:46:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:18,923 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 3337 proven. 3599 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2020-11-07 06:46:18,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893991880] [2020-11-07 06:46:18,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:46:18,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2020-11-07 06:46:18,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211980837] [2020-11-07 06:46:18,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-11-07 06:46:18,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:46:18,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-11-07 06:46:18,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1302, Invalid=4100, Unknown=0, NotChecked=0, Total=5402 [2020-11-07 06:46:18,928 INFO L87 Difference]: Start difference. First operand 587 states and 590 transitions. Second operand 74 states. [2020-11-07 06:46:28,733 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-11-07 06:46:44,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:46:44,709 INFO L93 Difference]: Finished difference Result 1097 states and 1205 transitions. [2020-11-07 06:46:44,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2020-11-07 06:46:44,710 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 581 [2020-11-07 06:46:44,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:46:44,716 INFO L225 Difference]: With dead ends: 1097 [2020-11-07 06:46:44,717 INFO L226 Difference]: Without dead ends: 876 [2020-11-07 06:46:44,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6776 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=8563, Invalid=22943, Unknown=0, NotChecked=0, Total=31506 [2020-11-07 06:46:44,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2020-11-07 06:46:44,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 593. [2020-11-07 06:46:44,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2020-11-07 06:46:44,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 596 transitions. [2020-11-07 06:46:44,989 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 596 transitions. Word has length 581 [2020-11-07 06:46:44,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:46:44,989 INFO L481 AbstractCegarLoop]: Abstraction has 593 states and 596 transitions. [2020-11-07 06:46:44,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-11-07 06:46:44,989 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 596 transitions. [2020-11-07 06:46:44,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2020-11-07 06:46:44,993 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:46:44,993 INFO L422 BasicCegarLoop]: trace histogram [36, 35, 35, 35, 35, 35, 35, 35, 35, 34, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:46:44,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-11-07 06:46:44,994 INFO L429 AbstractCegarLoop]: === Iteration 71 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:46:44,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:46:44,994 INFO L82 PathProgramCache]: Analyzing trace with hash 152651215, now seen corresponding path program 68 times [2020-11-07 06:46:44,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:46:44,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359494038] [2020-11-07 06:46:44,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:46:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:46:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-07 06:46:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-11-07 06:46:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-11-07 06:46:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-11-07 06:46:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-11-07 06:46:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-11-07 06:46:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-11-07 06:46:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-11-07 06:46:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-11-07 06:46:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-11-07 06:46:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-11-07 06:46:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-11-07 06:46:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-11-07 06:46:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-11-07 06:46:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2020-11-07 06:46:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-11-07 06:46:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-11-07 06:46:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2020-11-07 06:46:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-11-07 06:46:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2020-11-07 06:46:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-11-07 06:46:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2020-11-07 06:46:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2020-11-07 06:46:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2020-11-07 06:46:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-11-07 06:46:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-11-07 06:46:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2020-11-07 06:46:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2020-11-07 06:46:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-11-07 06:46:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2020-11-07 06:46:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2020-11-07 06:46:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2020-11-07 06:46:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-11-07 06:46:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2020-11-07 06:46:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:46:47,868 INFO L134 CoverageAnalysis]: Checked inductivity of 9386 backedges. 3502 proven. 3640 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2020-11-07 06:46:47,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359494038] [2020-11-07 06:46:47,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:46:47,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-11-07 06:46:47,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614355057] [2020-11-07 06:46:47,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-11-07 06:46:47,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:46:47,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-11-07 06:46:47,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=674, Invalid=966, Unknown=0, NotChecked=0, Total=1640 [2020-11-07 06:46:47,872 INFO L87 Difference]: Start difference. First operand 593 states and 596 transitions. Second operand 41 states. [2020-11-07 06:46:55,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:46:55,615 INFO L93 Difference]: Finished difference Result 612 states and 615 transitions. [2020-11-07 06:46:55,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-11-07 06:46:55,617 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 587 [2020-11-07 06:46:55,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:46:55,621 INFO L225 Difference]: With dead ends: 612 [2020-11-07 06:46:55,621 INFO L226 Difference]: Without dead ends: 608 [2020-11-07 06:46:55,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=2023, Invalid=4297, Unknown=0, NotChecked=0, Total=6320 [2020-11-07 06:46:55,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2020-11-07 06:46:55,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 603. [2020-11-07 06:46:55,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-11-07 06:46:55,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 606 transitions. [2020-11-07 06:46:55,776 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 606 transitions. Word has length 587 [2020-11-07 06:46:55,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:46:55,776 INFO L481 AbstractCegarLoop]: Abstraction has 603 states and 606 transitions. [2020-11-07 06:46:55,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-11-07 06:46:55,777 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 606 transitions. [2020-11-07 06:46:55,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2020-11-07 06:46:55,780 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:46:55,781 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:46:55,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-11-07 06:46:55,781 INFO L429 AbstractCegarLoop]: === Iteration 72 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:46:55,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:46:55,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1379399686, now seen corresponding path program 69 times [2020-11-07 06:46:55,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:46:55,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882345490] [2020-11-07 06:46:55,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:46:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:47:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-07 06:47:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-11-07 06:47:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-11-07 06:47:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-11-07 06:47:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-11-07 06:47:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-11-07 06:47:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-11-07 06:47:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-11-07 06:47:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-11-07 06:47:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-11-07 06:47:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-11-07 06:47:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-11-07 06:47:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-11-07 06:47:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-11-07 06:47:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2020-11-07 06:47:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-11-07 06:47:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-11-07 06:47:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2020-11-07 06:47:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-11-07 06:47:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2020-11-07 06:47:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-11-07 06:47:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2020-11-07 06:47:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2020-11-07 06:47:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2020-11-07 06:47:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-11-07 06:47:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-11-07 06:47:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2020-11-07 06:47:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2020-11-07 06:47:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-11-07 06:47:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2020-11-07 06:47:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2020-11-07 06:47:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2020-11-07 06:47:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-11-07 06:47:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2020-11-07 06:47:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:02,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2020-11-07 06:47:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:03,234 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 3540 proven. 3810 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-11-07 06:47:03,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882345490] [2020-11-07 06:47:03,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:47:03,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2020-11-07 06:47:03,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575981010] [2020-11-07 06:47:03,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-11-07 06:47:03,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:47:03,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-11-07 06:47:03,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1375, Invalid=4325, Unknown=0, NotChecked=0, Total=5700 [2020-11-07 06:47:03,237 INFO L87 Difference]: Start difference. First operand 603 states and 606 transitions. Second operand 76 states. [2020-11-07 06:47:13,394 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-11-07 06:47:27,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:47:27,069 INFO L93 Difference]: Finished difference Result 1127 states and 1238 transitions. [2020-11-07 06:47:27,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2020-11-07 06:47:27,071 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 597 [2020-11-07 06:47:27,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:47:27,076 INFO L225 Difference]: With dead ends: 1127 [2020-11-07 06:47:27,076 INFO L226 Difference]: Without dead ends: 900 [2020-11-07 06:47:27,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7168 ImplicationChecksByTransitivity, 20.4s TimeCoverageRelationStatistics Valid=9059, Invalid=24247, Unknown=0, NotChecked=0, Total=33306 [2020-11-07 06:47:27,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2020-11-07 06:47:27,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 609. [2020-11-07 06:47:27,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2020-11-07 06:47:27,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 612 transitions. [2020-11-07 06:47:27,229 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 612 transitions. Word has length 597 [2020-11-07 06:47:27,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:47:27,230 INFO L481 AbstractCegarLoop]: Abstraction has 609 states and 612 transitions. [2020-11-07 06:47:27,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-11-07 06:47:27,230 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 612 transitions. [2020-11-07 06:47:27,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2020-11-07 06:47:27,234 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:47:27,235 INFO L422 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 36, 36, 35, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:47:27,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-11-07 06:47:27,235 INFO L429 AbstractCegarLoop]: === Iteration 73 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:47:27,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:47:27,236 INFO L82 PathProgramCache]: Analyzing trace with hash 2058148482, now seen corresponding path program 70 times [2020-11-07 06:47:27,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:47:27,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246869174] [2020-11-07 06:47:27,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:47:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:47:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-11-07 06:47:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:47:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-11-07 06:47:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-11-07 06:47:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-11-07 06:47:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-11-07 06:47:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-11-07 06:47:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-11-07 06:47:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-11-07 06:47:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-11-07 06:47:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-11-07 06:47:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-11-07 06:47:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-11-07 06:47:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-11-07 06:47:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2020-11-07 06:47:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2020-11-07 06:47:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2020-11-07 06:47:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-11-07 06:47:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2020-11-07 06:47:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-11-07 06:47:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-11-07 06:47:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-11-07 06:47:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-11-07 06:47:29,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2020-11-07 06:47:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-11-07 06:47:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2020-11-07 06:47:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2020-11-07 06:47:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-11-07 06:47:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2020-11-07 06:47:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2020-11-07 06:47:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-11-07 06:47:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2020-11-07 06:47:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2020-11-07 06:47:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2020-11-07 06:47:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 587 [2020-11-07 06:47:29,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:29,520 INFO L134 CoverageAnalysis]: Checked inductivity of 9942 backedges. 3710 proven. 3852 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2020-11-07 06:47:29,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246869174] [2020-11-07 06:47:29,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:47:29,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-11-07 06:47:29,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206843673] [2020-11-07 06:47:29,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-11-07 06:47:29,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:47:29,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-11-07 06:47:29,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=711, Invalid=1011, Unknown=0, NotChecked=0, Total=1722 [2020-11-07 06:47:29,522 INFO L87 Difference]: Start difference. First operand 609 states and 612 transitions. Second operand 42 states. [2020-11-07 06:47:35,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:47:35,746 INFO L93 Difference]: Finished difference Result 628 states and 631 transitions. [2020-11-07 06:47:35,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-07 06:47:35,748 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 603 [2020-11-07 06:47:35,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:47:35,752 INFO L225 Difference]: With dead ends: 628 [2020-11-07 06:47:35,752 INFO L226 Difference]: Without dead ends: 624 [2020-11-07 06:47:35,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2134, Invalid=4508, Unknown=0, NotChecked=0, Total=6642 [2020-11-07 06:47:35,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2020-11-07 06:47:35,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 619. [2020-11-07 06:47:35,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2020-11-07 06:47:35,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 622 transitions. [2020-11-07 06:47:35,931 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 622 transitions. Word has length 603 [2020-11-07 06:47:35,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:47:35,932 INFO L481 AbstractCegarLoop]: Abstraction has 619 states and 622 transitions. [2020-11-07 06:47:35,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-11-07 06:47:35,932 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 622 transitions. [2020-11-07 06:47:35,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2020-11-07 06:47:35,934 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:47:35,935 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:47:35,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-11-07 06:47:35,935 INFO L429 AbstractCegarLoop]: === Iteration 74 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:47:35,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:47:35,935 INFO L82 PathProgramCache]: Analyzing trace with hash -690251539, now seen corresponding path program 71 times [2020-11-07 06:47:35,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:47:35,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374920091] [2020-11-07 06:47:35,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:47:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:47:40,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-11-07 06:47:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-11-07 06:47:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-11-07 06:47:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-11-07 06:47:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-11-07 06:47:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-11-07 06:47:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-11-07 06:47:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-11-07 06:47:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-11-07 06:47:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-11-07 06:47:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-11-07 06:47:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-11-07 06:47:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-11-07 06:47:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-11-07 06:47:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2020-11-07 06:47:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2020-11-07 06:47:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2020-11-07 06:47:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-11-07 06:47:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2020-11-07 06:47:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-11-07 06:47:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-11-07 06:47:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-11-07 06:47:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-11-07 06:47:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2020-11-07 06:47:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-11-07 06:47:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2020-11-07 06:47:40,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2020-11-07 06:47:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-11-07 06:47:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2020-11-07 06:47:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2020-11-07 06:47:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-11-07 06:47:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2020-11-07 06:47:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2020-11-07 06:47:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2020-11-07 06:47:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 587 [2020-11-07 06:47:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:40,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-11-07 06:47:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:47:41,320 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 3749 proven. 4027 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2020-11-07 06:47:41,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374920091] [2020-11-07 06:47:41,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:47:41,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2020-11-07 06:47:41,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063789757] [2020-11-07 06:47:41,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-11-07 06:47:41,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:47:41,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-11-07 06:47:41,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1450, Invalid=4556, Unknown=0, NotChecked=0, Total=6006 [2020-11-07 06:47:41,323 INFO L87 Difference]: Start difference. First operand 619 states and 622 transitions. Second operand 78 states. [2020-11-07 06:48:01,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:48:01,787 INFO L93 Difference]: Finished difference Result 1157 states and 1271 transitions. [2020-11-07 06:48:01,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2020-11-07 06:48:01,788 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 613 [2020-11-07 06:48:01,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:48:01,793 INFO L225 Difference]: With dead ends: 1157 [2020-11-07 06:48:01,793 INFO L226 Difference]: Without dead ends: 924 [2020-11-07 06:48:01,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7571 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=9569, Invalid=25587, Unknown=0, NotChecked=0, Total=35156 [2020-11-07 06:48:01,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-11-07 06:48:01,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 625. [2020-11-07 06:48:01,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2020-11-07 06:48:01,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 628 transitions. [2020-11-07 06:48:01,956 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 628 transitions. Word has length 613 [2020-11-07 06:48:01,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:48:01,956 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 628 transitions. [2020-11-07 06:48:01,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-11-07 06:48:01,956 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 628 transitions. [2020-11-07 06:48:01,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2020-11-07 06:48:01,959 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:48:01,960 INFO L422 BasicCegarLoop]: trace histogram [38, 37, 37, 37, 37, 37, 37, 37, 37, 36, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:48:01,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-11-07 06:48:01,960 INFO L429 AbstractCegarLoop]: === Iteration 75 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:48:01,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:48:01,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1910875275, now seen corresponding path program 72 times [2020-11-07 06:48:01,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:48:01,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810973323] [2020-11-07 06:48:01,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:48:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:48:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-11-07 06:48:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-11-07 06:48:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-11-07 06:48:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-11-07 06:48:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:48:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-11-07 06:48:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-11-07 06:48:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-11-07 06:48:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-11-07 06:48:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-11-07 06:48:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-11-07 06:48:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-11-07 06:48:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-11-07 06:48:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-11-07 06:48:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-11-07 06:48:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-11-07 06:48:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2020-11-07 06:48:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2020-11-07 06:48:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-11-07 06:48:03,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-11-07 06:48:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-11-07 06:48:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2020-11-07 06:48:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2020-11-07 06:48:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2020-11-07 06:48:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-11-07 06:48:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-11-07 06:48:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2020-11-07 06:48:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-11-07 06:48:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-11-07 06:48:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2020-11-07 06:48:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 553 [2020-11-07 06:48:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 563 [2020-11-07 06:48:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-11-07 06:48:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2020-11-07 06:48:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 593 [2020-11-07 06:48:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:03,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 603 [2020-11-07 06:48:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:04,268 INFO L134 CoverageAnalysis]: Checked inductivity of 10514 backedges. 3924 proven. 4070 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2020-11-07 06:48:04,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810973323] [2020-11-07 06:48:04,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:48:04,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-11-07 06:48:04,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541844853] [2020-11-07 06:48:04,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-11-07 06:48:04,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:48:04,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-11-07 06:48:04,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=749, Invalid=1057, Unknown=0, NotChecked=0, Total=1806 [2020-11-07 06:48:04,270 INFO L87 Difference]: Start difference. First operand 625 states and 628 transitions. Second operand 43 states. [2020-11-07 06:48:10,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:48:10,187 INFO L93 Difference]: Finished difference Result 644 states and 647 transitions. [2020-11-07 06:48:10,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-07 06:48:10,189 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 619 [2020-11-07 06:48:10,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:48:10,194 INFO L225 Difference]: With dead ends: 644 [2020-11-07 06:48:10,194 INFO L226 Difference]: Without dead ends: 640 [2020-11-07 06:48:10,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2248, Invalid=4724, Unknown=0, NotChecked=0, Total=6972 [2020-11-07 06:48:10,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2020-11-07 06:48:10,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 635. [2020-11-07 06:48:10,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2020-11-07 06:48:10,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 638 transitions. [2020-11-07 06:48:10,484 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 638 transitions. Word has length 619 [2020-11-07 06:48:10,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:48:10,484 INFO L481 AbstractCegarLoop]: Abstraction has 635 states and 638 transitions. [2020-11-07 06:48:10,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-11-07 06:48:10,485 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 638 transitions. [2020-11-07 06:48:10,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2020-11-07 06:48:10,490 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:48:10,491 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:48:10,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-11-07 06:48:10,491 INFO L429 AbstractCegarLoop]: === Iteration 76 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:48:10,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:48:10,492 INFO L82 PathProgramCache]: Analyzing trace with hash -193018336, now seen corresponding path program 73 times [2020-11-07 06:48:10,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:48:10,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306508006] [2020-11-07 06:48:10,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:48:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:48:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-11-07 06:48:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-11-07 06:48:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-11-07 06:48:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-11-07 06:48:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:48:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-11-07 06:48:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-11-07 06:48:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-11-07 06:48:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-11-07 06:48:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-11-07 06:48:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-11-07 06:48:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-11-07 06:48:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-11-07 06:48:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-11-07 06:48:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-11-07 06:48:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-11-07 06:48:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2020-11-07 06:48:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2020-11-07 06:48:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-11-07 06:48:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-11-07 06:48:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-11-07 06:48:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2020-11-07 06:48:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2020-11-07 06:48:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2020-11-07 06:48:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-11-07 06:48:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-11-07 06:48:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2020-11-07 06:48:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-11-07 06:48:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-11-07 06:48:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2020-11-07 06:48:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 553 [2020-11-07 06:48:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 563 [2020-11-07 06:48:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-11-07 06:48:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2020-11-07 06:48:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 593 [2020-11-07 06:48:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 603 [2020-11-07 06:48:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2020-11-07 06:48:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:16,408 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 3964 proven. 4250 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-11-07 06:48:16,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306508006] [2020-11-07 06:48:16,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:48:16,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80] total 80 [2020-11-07 06:48:16,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827256094] [2020-11-07 06:48:16,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 80 states [2020-11-07 06:48:16,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:48:16,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2020-11-07 06:48:16,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1527, Invalid=4793, Unknown=0, NotChecked=0, Total=6320 [2020-11-07 06:48:16,410 INFO L87 Difference]: Start difference. First operand 635 states and 638 transitions. Second operand 80 states. [2020-11-07 06:48:38,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:48:38,537 INFO L93 Difference]: Finished difference Result 1187 states and 1304 transitions. [2020-11-07 06:48:38,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2020-11-07 06:48:38,539 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 629 [2020-11-07 06:48:38,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:48:38,543 INFO L225 Difference]: With dead ends: 1187 [2020-11-07 06:48:38,543 INFO L226 Difference]: Without dead ends: 948 [2020-11-07 06:48:38,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7985 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=10093, Invalid=26963, Unknown=0, NotChecked=0, Total=37056 [2020-11-07 06:48:38,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2020-11-07 06:48:38,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 641. [2020-11-07 06:48:38,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2020-11-07 06:48:38,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 644 transitions. [2020-11-07 06:48:38,742 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 644 transitions. Word has length 629 [2020-11-07 06:48:38,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:48:38,742 INFO L481 AbstractCegarLoop]: Abstraction has 641 states and 644 transitions. [2020-11-07 06:48:38,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 80 states. [2020-11-07 06:48:38,742 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 644 transitions. [2020-11-07 06:48:38,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2020-11-07 06:48:38,745 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:48:38,746 INFO L422 BasicCegarLoop]: trace histogram [39, 38, 38, 38, 38, 38, 38, 38, 38, 37, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:48:38,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-11-07 06:48:38,746 INFO L429 AbstractCegarLoop]: === Iteration 77 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:48:38,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:48:38,747 INFO L82 PathProgramCache]: Analyzing trace with hash 70744232, now seen corresponding path program 74 times [2020-11-07 06:48:38,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:48:38,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255628691] [2020-11-07 06:48:38,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:48:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:48:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-11-07 06:48:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-11-07 06:48:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-11-07 06:48:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-11-07 06:48:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-11-07 06:48:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-11-07 06:48:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-11-07 06:48:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-11-07 06:48:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-11-07 06:48:41,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-11-07 06:48:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2020-11-07 06:48:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-11-07 06:48:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2020-11-07 06:48:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-11-07 06:48:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2020-11-07 06:48:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-11-07 06:48:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-11-07 06:48:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-11-07 06:48:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-11-07 06:48:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2020-11-07 06:48:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-11-07 06:48:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2020-11-07 06:48:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2020-11-07 06:48:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2020-11-07 06:48:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2020-11-07 06:48:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-11-07 06:48:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-11-07 06:48:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2020-11-07 06:48:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2020-11-07 06:48:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2020-11-07 06:48:41,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2020-11-07 06:48:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2020-11-07 06:48:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-11-07 06:48:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-11-07 06:48:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-11-07 06:48:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-11-07 06:48:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2020-11-07 06:48:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:41,411 INFO L134 CoverageAnalysis]: Checked inductivity of 11102 backedges. 4144 proven. 4294 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2020-11-07 06:48:41,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255628691] [2020-11-07 06:48:41,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:48:41,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-11-07 06:48:41,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922274469] [2020-11-07 06:48:41,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-11-07 06:48:41,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:48:41,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-11-07 06:48:41,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=788, Invalid=1104, Unknown=0, NotChecked=0, Total=1892 [2020-11-07 06:48:41,413 INFO L87 Difference]: Start difference. First operand 641 states and 644 transitions. Second operand 44 states. [2020-11-07 06:48:48,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:48:48,100 INFO L93 Difference]: Finished difference Result 660 states and 663 transitions. [2020-11-07 06:48:48,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-07 06:48:48,101 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 635 [2020-11-07 06:48:48,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:48:48,105 INFO L225 Difference]: With dead ends: 660 [2020-11-07 06:48:48,105 INFO L226 Difference]: Without dead ends: 656 [2020-11-07 06:48:48,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2365, Invalid=4945, Unknown=0, NotChecked=0, Total=7310 [2020-11-07 06:48:48,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2020-11-07 06:48:48,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 651. [2020-11-07 06:48:48,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2020-11-07 06:48:48,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 654 transitions. [2020-11-07 06:48:48,262 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 654 transitions. Word has length 635 [2020-11-07 06:48:48,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:48:48,263 INFO L481 AbstractCegarLoop]: Abstraction has 651 states and 654 transitions. [2020-11-07 06:48:48,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-11-07 06:48:48,263 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 654 transitions. [2020-11-07 06:48:48,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 646 [2020-11-07 06:48:48,266 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:48:48,266 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:48:48,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2020-11-07 06:48:48,267 INFO L429 AbstractCegarLoop]: === Iteration 78 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:48:48,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:48:48,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1138016365, now seen corresponding path program 75 times [2020-11-07 06:48:48,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:48:48,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469196416] [2020-11-07 06:48:48,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:48:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:48:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-11-07 06:48:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-11-07 06:48:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2020-11-07 06:48:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2020-11-07 06:48:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-11-07 06:48:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2020-11-07 06:48:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-11-07 06:48:54,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-11-07 06:48:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-11-07 06:48:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-11-07 06:48:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2020-11-07 06:48:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2020-11-07 06:48:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2020-11-07 06:48:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-11-07 06:48:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2020-11-07 06:48:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-11-07 06:48:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2020-11-07 06:48:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-11-07 06:48:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-11-07 06:48:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2020-11-07 06:48:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-11-07 06:48:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2020-11-07 06:48:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2020-11-07 06:48:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 489 [2020-11-07 06:48:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2020-11-07 06:48:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-11-07 06:48:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-11-07 06:48:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 529 [2020-11-07 06:48:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2020-11-07 06:48:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2020-11-07 06:48:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2020-11-07 06:48:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 569 [2020-11-07 06:48:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-11-07 06:48:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-11-07 06:48:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-11-07 06:48:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-11-07 06:48:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2020-11-07 06:48:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 629 [2020-11-07 06:48:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:48:54,834 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 4185 proven. 4479 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2020-11-07 06:48:54,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469196416] [2020-11-07 06:48:54,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:48:54,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82] total 82 [2020-11-07 06:48:54,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119584827] [2020-11-07 06:48:54,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 82 states [2020-11-07 06:48:54,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:48:54,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2020-11-07 06:48:54,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1606, Invalid=5036, Unknown=0, NotChecked=0, Total=6642 [2020-11-07 06:48:54,837 INFO L87 Difference]: Start difference. First operand 651 states and 654 transitions. Second operand 82 states. [2020-11-07 06:49:18,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:49:18,418 INFO L93 Difference]: Finished difference Result 1217 states and 1337 transitions. [2020-11-07 06:49:18,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2020-11-07 06:49:18,420 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 645 [2020-11-07 06:49:18,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:49:18,423 INFO L225 Difference]: With dead ends: 1217 [2020-11-07 06:49:18,423 INFO L226 Difference]: Without dead ends: 972 [2020-11-07 06:49:18,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8410 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=10631, Invalid=28375, Unknown=0, NotChecked=0, Total=39006 [2020-11-07 06:49:18,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2020-11-07 06:49:18,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 657. [2020-11-07 06:49:18,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2020-11-07 06:49:18,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 660 transitions. [2020-11-07 06:49:18,607 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 660 transitions. Word has length 645 [2020-11-07 06:49:18,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:49:18,608 INFO L481 AbstractCegarLoop]: Abstraction has 657 states and 660 transitions. [2020-11-07 06:49:18,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 82 states. [2020-11-07 06:49:18,608 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 660 transitions. [2020-11-07 06:49:18,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2020-11-07 06:49:18,611 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:49:18,611 INFO L422 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 39, 39, 38, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:49:18,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2020-11-07 06:49:18,611 INFO L429 AbstractCegarLoop]: === Iteration 79 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:49:18,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:49:18,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1383981595, now seen corresponding path program 76 times [2020-11-07 06:49:18,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:49:18,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861015232] [2020-11-07 06:49:18,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:49:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:49:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-11-07 06:49:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:49:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-11-07 06:49:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-11-07 06:49:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-11-07 06:49:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-11-07 06:49:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-11-07 06:49:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-11-07 06:49:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-11-07 06:49:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-11-07 06:49:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-11-07 06:49:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-11-07 06:49:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-11-07 06:49:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2020-11-07 06:49:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-11-07 06:49:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-11-07 06:49:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-11-07 06:49:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2020-11-07 06:49:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-11-07 06:49:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2020-11-07 06:49:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2020-11-07 06:49:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-11-07 06:49:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2020-11-07 06:49:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-11-07 06:49:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2020-11-07 06:49:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2020-11-07 06:49:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2020-11-07 06:49:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-11-07 06:49:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2020-11-07 06:49:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2020-11-07 06:49:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2020-11-07 06:49:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-11-07 06:49:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 585 [2020-11-07 06:49:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 595 [2020-11-07 06:49:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 605 [2020-11-07 06:49:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 615 [2020-11-07 06:49:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 625 [2020-11-07 06:49:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-11-07 06:49:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:21,392 INFO L134 CoverageAnalysis]: Checked inductivity of 11706 backedges. 4370 proven. 4524 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2020-11-07 06:49:21,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861015232] [2020-11-07 06:49:21,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:49:21,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-11-07 06:49:21,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030391388] [2020-11-07 06:49:21,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-11-07 06:49:21,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:49:21,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-11-07 06:49:21,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=828, Invalid=1152, Unknown=0, NotChecked=0, Total=1980 [2020-11-07 06:49:21,394 INFO L87 Difference]: Start difference. First operand 657 states and 660 transitions. Second operand 45 states. [2020-11-07 06:49:28,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:49:28,353 INFO L93 Difference]: Finished difference Result 676 states and 679 transitions. [2020-11-07 06:49:28,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-07 06:49:28,355 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 651 [2020-11-07 06:49:28,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:49:28,357 INFO L225 Difference]: With dead ends: 676 [2020-11-07 06:49:28,357 INFO L226 Difference]: Without dead ends: 672 [2020-11-07 06:49:28,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1130 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2485, Invalid=5171, Unknown=0, NotChecked=0, Total=7656 [2020-11-07 06:49:28,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2020-11-07 06:49:28,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 667. [2020-11-07 06:49:28,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2020-11-07 06:49:28,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 670 transitions. [2020-11-07 06:49:28,534 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 670 transitions. Word has length 651 [2020-11-07 06:49:28,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:49:28,534 INFO L481 AbstractCegarLoop]: Abstraction has 667 states and 670 transitions. [2020-11-07 06:49:28,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-11-07 06:49:28,534 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 670 transitions. [2020-11-07 06:49:28,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2020-11-07 06:49:28,537 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:49:28,538 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:49:28,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2020-11-07 06:49:28,538 INFO L429 AbstractCegarLoop]: === Iteration 80 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:49:28,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:49:28,538 INFO L82 PathProgramCache]: Analyzing trace with hash 452900166, now seen corresponding path program 77 times [2020-11-07 06:49:28,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:49:28,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606974857] [2020-11-07 06:49:28,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:49:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:49:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-11-07 06:49:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-11-07 06:49:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2020-11-07 06:49:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-11-07 06:49:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-11-07 06:49:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-11-07 06:49:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-11-07 06:49:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-11-07 06:49:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2020-11-07 06:49:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-11-07 06:49:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2020-11-07 06:49:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2020-11-07 06:49:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-11-07 06:49:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2020-11-07 06:49:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-11-07 06:49:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-11-07 06:49:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-11-07 06:49:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2020-11-07 06:49:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2020-11-07 06:49:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2020-11-07 06:49:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2020-11-07 06:49:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-11-07 06:49:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2020-11-07 06:49:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-11-07 06:49:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2020-11-07 06:49:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2020-11-07 06:49:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 525 [2020-11-07 06:49:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-11-07 06:49:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 545 [2020-11-07 06:49:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2020-11-07 06:49:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2020-11-07 06:49:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-11-07 06:49:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 585 [2020-11-07 06:49:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 595 [2020-11-07 06:49:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 605 [2020-11-07 06:49:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 615 [2020-11-07 06:49:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 625 [2020-11-07 06:49:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-11-07 06:49:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 645 [2020-11-07 06:49:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:49:35,726 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 4412 proven. 4714 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-11-07 06:49:35,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606974857] [2020-11-07 06:49:35,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:49:35,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84] total 84 [2020-11-07 06:49:35,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804580768] [2020-11-07 06:49:35,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 84 states [2020-11-07 06:49:35,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:49:35,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2020-11-07 06:49:35,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1687, Invalid=5285, Unknown=0, NotChecked=0, Total=6972 [2020-11-07 06:49:35,729 INFO L87 Difference]: Start difference. First operand 667 states and 670 transitions. Second operand 84 states. [2020-11-07 06:50:01,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:50:01,930 INFO L93 Difference]: Finished difference Result 1247 states and 1370 transitions. [2020-11-07 06:50:01,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2020-11-07 06:50:01,932 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 661 [2020-11-07 06:50:01,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:50:01,935 INFO L225 Difference]: With dead ends: 1247 [2020-11-07 06:50:01,936 INFO L226 Difference]: Without dead ends: 996 [2020-11-07 06:50:01,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8846 ImplicationChecksByTransitivity, 21.8s TimeCoverageRelationStatistics Valid=11183, Invalid=29823, Unknown=0, NotChecked=0, Total=41006 [2020-11-07 06:50:01,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2020-11-07 06:50:02,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 673. [2020-11-07 06:50:02,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 673 states. [2020-11-07 06:50:02,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 676 transitions. [2020-11-07 06:50:02,127 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 676 transitions. Word has length 661 [2020-11-07 06:50:02,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:50:02,128 INFO L481 AbstractCegarLoop]: Abstraction has 673 states and 676 transitions. [2020-11-07 06:50:02,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 84 states. [2020-11-07 06:50:02,128 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 676 transitions. [2020-11-07 06:50:02,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2020-11-07 06:50:02,131 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:50:02,132 INFO L422 BasicCegarLoop]: trace histogram [41, 40, 40, 40, 40, 40, 40, 40, 40, 39, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:50:02,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2020-11-07 06:50:02,132 INFO L429 AbstractCegarLoop]: === Iteration 81 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:50:02,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:50:02,132 INFO L82 PathProgramCache]: Analyzing trace with hash 638273486, now seen corresponding path program 78 times [2020-11-07 06:50:02,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:50:02,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773025000] [2020-11-07 06:50:02,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:50:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:50:04,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-11-07 06:50:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-11-07 06:50:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-11-07 06:50:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-11-07 06:50:04,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-11-07 06:50:04,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-11-07 06:50:04,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-11-07 06:50:04,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-11-07 06:50:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-11-07 06:50:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-11-07 06:50:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-11-07 06:50:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2020-11-07 06:50:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-11-07 06:50:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-11-07 06:50:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2020-11-07 06:50:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-11-07 06:50:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2020-11-07 06:50:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-11-07 06:50:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2020-11-07 06:50:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2020-11-07 06:50:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2020-11-07 06:50:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-11-07 06:50:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-11-07 06:50:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2020-11-07 06:50:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2020-11-07 06:50:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-11-07 06:50:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2020-11-07 06:50:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2020-11-07 06:50:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2020-11-07 06:50:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-11-07 06:50:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2020-11-07 06:50:04,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2020-11-07 06:50:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2020-11-07 06:50:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-11-07 06:50:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 611 [2020-11-07 06:50:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 621 [2020-11-07 06:50:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-11-07 06:50:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 641 [2020-11-07 06:50:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:04,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 651 [2020-11-07 06:50:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:05,188 INFO L134 CoverageAnalysis]: Checked inductivity of 12326 backedges. 4602 proven. 4760 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2020-11-07 06:50:05,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773025000] [2020-11-07 06:50:05,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:50:05,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-11-07 06:50:05,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874312417] [2020-11-07 06:50:05,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-11-07 06:50:05,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:50:05,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-11-07 06:50:05,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=1201, Unknown=0, NotChecked=0, Total=2070 [2020-11-07 06:50:05,190 INFO L87 Difference]: Start difference. First operand 673 states and 676 transitions. Second operand 46 states. [2020-11-07 06:50:13,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:50:13,351 INFO L93 Difference]: Finished difference Result 692 states and 695 transitions. [2020-11-07 06:50:13,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-11-07 06:50:13,353 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 667 [2020-11-07 06:50:13,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:50:13,356 INFO L225 Difference]: With dead ends: 692 [2020-11-07 06:50:13,356 INFO L226 Difference]: Without dead ends: 688 [2020-11-07 06:50:13,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1179 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2608, Invalid=5402, Unknown=0, NotChecked=0, Total=8010 [2020-11-07 06:50:13,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2020-11-07 06:50:13,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 683. [2020-11-07 06:50:13,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2020-11-07 06:50:13,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 686 transitions. [2020-11-07 06:50:13,545 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 686 transitions. Word has length 667 [2020-11-07 06:50:13,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:50:13,546 INFO L481 AbstractCegarLoop]: Abstraction has 683 states and 686 transitions. [2020-11-07 06:50:13,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-11-07 06:50:13,546 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 686 transitions. [2020-11-07 06:50:13,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2020-11-07 06:50:13,550 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:50:13,550 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:50:13,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2020-11-07 06:50:13,550 INFO L429 AbstractCegarLoop]: === Iteration 82 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:50:13,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:50:13,551 INFO L82 PathProgramCache]: Analyzing trace with hash -121972935, now seen corresponding path program 79 times [2020-11-07 06:50:13,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:50:13,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406428136] [2020-11-07 06:50:13,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:50:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:50:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-11-07 06:50:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2020-11-07 06:50:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-11-07 06:50:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-11-07 06:50:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-11-07 06:50:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-11-07 06:50:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-11-07 06:50:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-11-07 06:50:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-11-07 06:50:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-11-07 06:50:21,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-11-07 06:50:21,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2020-11-07 06:50:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-11-07 06:50:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-11-07 06:50:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2020-11-07 06:50:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-11-07 06:50:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2020-11-07 06:50:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2020-11-07 06:50:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2020-11-07 06:50:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2020-11-07 06:50:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2020-11-07 06:50:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-11-07 06:50:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-11-07 06:50:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2020-11-07 06:50:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2020-11-07 06:50:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-11-07 06:50:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 531 [2020-11-07 06:50:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 541 [2020-11-07 06:50:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 551 [2020-11-07 06:50:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-11-07 06:50:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2020-11-07 06:50:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 581 [2020-11-07 06:50:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2020-11-07 06:50:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-11-07 06:50:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 611 [2020-11-07 06:50:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 621 [2020-11-07 06:50:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-11-07 06:50:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 641 [2020-11-07 06:50:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 651 [2020-11-07 06:50:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-11-07 06:50:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:21,683 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 4645 proven. 4955 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2020-11-07 06:50:21,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406428136] [2020-11-07 06:50:21,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:50:21,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86] total 86 [2020-11-07 06:50:21,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905814543] [2020-11-07 06:50:21,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 86 states [2020-11-07 06:50:21,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:50:21,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2020-11-07 06:50:21,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=5540, Unknown=0, NotChecked=0, Total=7310 [2020-11-07 06:50:21,685 INFO L87 Difference]: Start difference. First operand 683 states and 686 transitions. Second operand 86 states. [2020-11-07 06:50:49,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:50:49,969 INFO L93 Difference]: Finished difference Result 1277 states and 1403 transitions. [2020-11-07 06:50:49,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2020-11-07 06:50:49,971 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 677 [2020-11-07 06:50:49,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:50:49,974 INFO L225 Difference]: With dead ends: 1277 [2020-11-07 06:50:49,974 INFO L226 Difference]: Without dead ends: 1020 [2020-11-07 06:50:49,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9293 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=11749, Invalid=31307, Unknown=0, NotChecked=0, Total=43056 [2020-11-07 06:50:49,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2020-11-07 06:50:50,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 689. [2020-11-07 06:50:50,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-11-07 06:50:50,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 692 transitions. [2020-11-07 06:50:50,173 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 692 transitions. Word has length 677 [2020-11-07 06:50:50,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:50:50,174 INFO L481 AbstractCegarLoop]: Abstraction has 689 states and 692 transitions. [2020-11-07 06:50:50,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 86 states. [2020-11-07 06:50:50,174 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 692 transitions. [2020-11-07 06:50:50,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2020-11-07 06:50:50,179 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:50:50,180 INFO L422 BasicCegarLoop]: trace histogram [42, 41, 41, 41, 41, 41, 41, 41, 41, 40, 40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:50:50,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2020-11-07 06:50:50,180 INFO L429 AbstractCegarLoop]: === Iteration 83 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:50:50,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:50:50,181 INFO L82 PathProgramCache]: Analyzing trace with hash 648108481, now seen corresponding path program 80 times [2020-11-07 06:50:50,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:50:50,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713034820] [2020-11-07 06:50:50,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:50:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:50:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-11-07 06:50:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-11-07 06:50:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-11-07 06:50:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-11-07 06:50:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-11-07 06:50:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-11-07 06:50:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-11-07 06:50:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-11-07 06:50:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-11-07 06:50:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-11-07 06:50:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-11-07 06:50:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2020-11-07 06:50:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2020-11-07 06:50:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2020-11-07 06:50:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-11-07 06:50:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2020-11-07 06:50:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-11-07 06:50:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-11-07 06:50:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-11-07 06:50:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-11-07 06:50:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2020-11-07 06:50:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-11-07 06:50:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2020-11-07 06:50:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2020-11-07 06:50:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-11-07 06:50:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2020-11-07 06:50:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2020-11-07 06:50:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-11-07 06:50:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2020-11-07 06:50:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2020-11-07 06:50:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2020-11-07 06:50:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 587 [2020-11-07 06:50:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-11-07 06:50:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-11-07 06:50:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 617 [2020-11-07 06:50:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 627 [2020-11-07 06:50:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 637 [2020-11-07 06:50:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-11-07 06:50:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-11-07 06:50:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 667 [2020-11-07 06:50:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:53,668 INFO L134 CoverageAnalysis]: Checked inductivity of 12962 backedges. 4840 proven. 5002 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2020-11-07 06:50:53,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713034820] [2020-11-07 06:50:53,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:50:53,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-11-07 06:50:53,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591078232] [2020-11-07 06:50:53,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-11-07 06:50:53,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:50:53,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-11-07 06:50:53,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=911, Invalid=1251, Unknown=0, NotChecked=0, Total=2162 [2020-11-07 06:50:53,670 INFO L87 Difference]: Start difference. First operand 689 states and 692 transitions. Second operand 47 states. [2020-11-07 06:51:01,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:51:01,615 INFO L93 Difference]: Finished difference Result 708 states and 711 transitions. [2020-11-07 06:51:01,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-11-07 06:51:01,617 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 683 [2020-11-07 06:51:01,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:51:01,620 INFO L225 Difference]: With dead ends: 708 [2020-11-07 06:51:01,620 INFO L226 Difference]: Without dead ends: 704 [2020-11-07 06:51:01,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1229 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=2734, Invalid=5638, Unknown=0, NotChecked=0, Total=8372 [2020-11-07 06:51:01,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-11-07 06:51:01,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 699. [2020-11-07 06:51:01,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-11-07 06:51:01,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 702 transitions. [2020-11-07 06:51:01,797 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 702 transitions. Word has length 683 [2020-11-07 06:51:01,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:51:01,797 INFO L481 AbstractCegarLoop]: Abstraction has 699 states and 702 transitions. [2020-11-07 06:51:01,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-11-07 06:51:01,797 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 702 transitions. [2020-11-07 06:51:01,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2020-11-07 06:51:01,801 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:51:01,801 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:51:01,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2020-11-07 06:51:01,801 INFO L429 AbstractCegarLoop]: === Iteration 84 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:51:01,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:51:01,801 INFO L82 PathProgramCache]: Analyzing trace with hash 986010988, now seen corresponding path program 81 times [2020-11-07 06:51:01,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:51:01,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414450490] [2020-11-07 06:51:01,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:51:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:51:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-11-07 06:51:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-11-07 06:51:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-11-07 06:51:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2020-11-07 06:51:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-11-07 06:51:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-11-07 06:51:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-11-07 06:51:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-11-07 06:51:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-11-07 06:51:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-11-07 06:51:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-11-07 06:51:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2020-11-07 06:51:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2020-11-07 06:51:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2020-11-07 06:51:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-11-07 06:51:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2020-11-07 06:51:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-11-07 06:51:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2020-11-07 06:51:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-11-07 06:51:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-11-07 06:51:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2020-11-07 06:51:10,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-11-07 06:51:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2020-11-07 06:51:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2020-11-07 06:51:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-11-07 06:51:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 527 [2020-11-07 06:51:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 537 [2020-11-07 06:51:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-11-07 06:51:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 557 [2020-11-07 06:51:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2020-11-07 06:51:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2020-11-07 06:51:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 587 [2020-11-07 06:51:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-11-07 06:51:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-11-07 06:51:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 617 [2020-11-07 06:51:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 627 [2020-11-07 06:51:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 637 [2020-11-07 06:51:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-11-07 06:51:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-11-07 06:51:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 667 [2020-11-07 06:51:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 677 [2020-11-07 06:51:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:10,661 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 4884 proven. 5202 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-11-07 06:51:10,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414450490] [2020-11-07 06:51:10,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:51:10,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2020-11-07 06:51:10,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706102453] [2020-11-07 06:51:10,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-11-07 06:51:10,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:51:10,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-11-07 06:51:10,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1855, Invalid=5801, Unknown=0, NotChecked=0, Total=7656 [2020-11-07 06:51:10,664 INFO L87 Difference]: Start difference. First operand 699 states and 702 transitions. Second operand 88 states. [2020-11-07 06:51:22,541 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-11-07 06:51:43,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:51:43,499 INFO L93 Difference]: Finished difference Result 1307 states and 1436 transitions. [2020-11-07 06:51:43,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2020-11-07 06:51:43,502 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 693 [2020-11-07 06:51:43,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:51:43,506 INFO L225 Difference]: With dead ends: 1307 [2020-11-07 06:51:43,506 INFO L226 Difference]: Without dead ends: 1044 [2020-11-07 06:51:43,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9751 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=12329, Invalid=32827, Unknown=0, NotChecked=0, Total=45156 [2020-11-07 06:51:43,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2020-11-07 06:51:43,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 705. [2020-11-07 06:51:43,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705 states. [2020-11-07 06:51:43,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 708 transitions. [2020-11-07 06:51:43,722 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 708 transitions. Word has length 693 [2020-11-07 06:51:43,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:51:43,723 INFO L481 AbstractCegarLoop]: Abstraction has 705 states and 708 transitions. [2020-11-07 06:51:43,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-11-07 06:51:43,723 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 708 transitions. [2020-11-07 06:51:43,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2020-11-07 06:51:43,726 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:51:43,727 INFO L422 BasicCegarLoop]: trace histogram [43, 42, 42, 42, 42, 42, 42, 42, 42, 41, 41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:51:43,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2020-11-07 06:51:43,727 INFO L429 AbstractCegarLoop]: === Iteration 85 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:51:43,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:51:43,728 INFO L82 PathProgramCache]: Analyzing trace with hash -106575884, now seen corresponding path program 82 times [2020-11-07 06:51:43,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:51:43,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872401706] [2020-11-07 06:51:43,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:51:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:51:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-11-07 06:51:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-11-07 06:51:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-11-07 06:51:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-11-07 06:51:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2020-11-07 06:51:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-11-07 06:51:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-11-07 06:51:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-11-07 06:51:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-11-07 06:51:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2020-11-07 06:51:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-11-07 06:51:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-11-07 06:51:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-11-07 06:51:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2020-11-07 06:51:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2020-11-07 06:51:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-11-07 06:51:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-11-07 06:51:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-11-07 06:51:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2020-11-07 06:51:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2020-11-07 06:51:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 483 [2020-11-07 06:51:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-11-07 06:51:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-11-07 06:51:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 513 [2020-11-07 06:51:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-11-07 06:51:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-11-07 06:51:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2020-11-07 06:51:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 553 [2020-11-07 06:51:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 563 [2020-11-07 06:51:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-11-07 06:51:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 583 [2020-11-07 06:51:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 593 [2020-11-07 06:51:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 603 [2020-11-07 06:51:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2020-11-07 06:51:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2020-11-07 06:51:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-11-07 06:51:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 643 [2020-11-07 06:51:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 653 [2020-11-07 06:51:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 663 [2020-11-07 06:51:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 673 [2020-11-07 06:51:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2020-11-07 06:51:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:51:47,678 INFO L134 CoverageAnalysis]: Checked inductivity of 13614 backedges. 5084 proven. 5250 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2020-11-07 06:51:47,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872401706] [2020-11-07 06:51:47,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:51:47,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-11-07 06:51:47,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245192329] [2020-11-07 06:51:47,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-11-07 06:51:47,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:51:47,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-11-07 06:51:47,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=954, Invalid=1302, Unknown=0, NotChecked=0, Total=2256 [2020-11-07 06:51:47,680 INFO L87 Difference]: Start difference. First operand 705 states and 708 transitions. Second operand 48 states.